This is a 5 Watt stereo audio amplifier circuit, built based on single amplifier TA7227 chip. The TA7227 can be used for dual mode (stereo) and single mode (bridge/mono). This IC type featured some circuit protection: thermal protection, over voltage protection, current limitter and BTL DC short connection.
Rangkaian TA7227 Stereo AmplifierRangkaian TA7227 Stereo Audio Amplifier
IC TA7227 must be connected to a heat sink. A computer cabinet fan can also be used in addition. Any way better the cooling better the performance. The circuit roughly draws 5A current at 12 V at full volume.So the power supply must be any thing more than 5A. Up to 15 V can be used ,which gives a bit more power boost.Commonly used is 12 V.
Power Amplifier Based on LM391 Circuit
Thursday, November 25, 2010 1:59 PM
Here is a 35 Watt audio amplifier circuit based LM391 chip. The LM391 Audio Power Driver is designed to drive external Power Transistors in 10 to 100 watt power Amplifier designs. High power supply voltage operation and true high fidelity performance distinguish this IC. The LM391 is internally pro- tected for output faults and thermal overloads; circuitry pro- viding output Transistor protection is user programmable. By National Semiconductor
Rangkaian Power Amplifier Based on LM391 Rangkaian 35 Watt Power Amplifier
Based on LM391
The circuit was designed to drive the power transistors of a power amplifier that will produce a power output of 35 Watts. Inductor L1 is constituted by 20 coils of wire, with thickness 0.9mm, round resistor R16. Transistors Q3-4 should be placed on heatsink. If are used the Q3-4 in packing TIPxxxx they can be placed straight above in PCB. If however they are used transistor in packing TO-3, then it will be supposed they are connected with short cables in the corresponding places on PCB.
List componet of 35 Watts amplifier LM391 circuit
* R1-3-5-8-10 = 1Kohm
* R2-7-11 = 100Kohm
* R4-6 = 4.7Kohm
* R9-12 = 100ohm
* R13 = 47Kohm
* R14-15 = 0.15ohm 5W
* R16 = 1ohm 2W carbon 5%
* R17 = 10ohm 1W carbon 5%
* C1 = 2.2uF 63V
* C2 = 4.7uF 25V
* C3-17 = 47uF 63V
* C4-8-9 = 1nF 100V MKT
* C5 = 47nF 100V MKT
* C6 = 22pF ceramic
* C7-11-12-13 = 100nF 100V MKT
* C10 = 22pF ceramic
* TR1 = 10K Trimmer
* D1-2 = IN4002
* IC1 = LM391
* Q1 = BD139
* Q2 = BD140
* Q3 = TIP2955
* Q4 = TIP3055
* L1 = See text
0.5 Watt Mini Amplifier TDA1015T
Thursday, November 25, 2010 11:20 AM
This is a circuit schematic for the mini power amplifer using TDA1015T, based on the application circuit from the datasheet. Not many external components are needed to complete at full 0.5W power amplifier. This is without its pre-amp but not many more components are required to add that to the circuit.
Rangkaian Mini Amplifier TDA1015T Rangkaian Mini Amplifier TDA1015T
A volume control is included in schematic. Log type is required and 4k7 to 10k is about right. A dual pot is needed if you plan on using two TDA1015's to complete a stereo amp.
Chances are you'll want this amplifier portable. Batteries do the trick fine, but you won't get much power out of a couple of 1.5V cells. Unfortunately the size of a decent amount of battery power will mean that the overall size of this amp will be much bigger and for that there are more benefits to be had using a device like the TDA7052 or TDA2822 for stereo.
Quick ref data of TDA1015T Chip
* Supply voltage range: 3,6 to 12 V
* Peak output current: 1 A
* Output power: 0,5 W
* Voltage gain power amplifier: 29 dB
* Voltage gain preamplifier: 23 dB
* Total quiescent current: 22 mA
* Operating ambient temperature range: -25 to +150 °C
* Storage temperature range: -55 to + 150 °C
TDA2822 Mini Portable Amplifier
Thursday, November 25, 2010 9:18 AM
This is a small amplifier using TDA2822 chip designed for portable cassette players and radios. Including volume control. A 9 volt power supply is ideal for supply, which can be a source with batteries or transformer. It is not necessary to use heat sink.
Rangkaian TDA2822 Mini Portable AmplifierRangkaian TDA2822 Mini Portable Amplifier
General integrated amplifier circuit external components and need more larger heatsink. This paper presents a simple amplifier circuit, made easy. TDA2822 amplifier integrated circuits used in music players, portable DVD and other audio playback; power is not great but you can satisfy the requirements of the hearing, and the circuit is simple, good sound quality, wide voltage range of characteristics such as the amateur production Small amp better choice.
Feature of TDA2822 Amplifier Circuit
1. Power Supply: 3 – 12 V at 200 – 500 mA max
2. Idle Current: ~ 10 mA
3. Output impedance 4 - 32 Ohm
4. Freq. response ~ 40 Hz to 200 kHz, 8 ohm, G=10<> 50 kHz, 32 ohm
5. Output Power:
* > 1 Watt max. 4-8 ohms, 12V DC
* > 500 mW, 32 ohm, 12V
* > 500 mW, 4 ohm, 6V
* ~ 0.4 Watt RMS cont. per channel
TDA1562Q - 70 Watts BTL Amplifier
Thursday, November 25, 2010 8:33 AM
Schematic diagram of the class-H BTL amplifier TDA1562Q is shown below, in this circuit. Has an internal booster circuit elements That allow to develop at 4 Ohm load with 14.2 volts power supply, the power to 70 Watts
Rangkaian TDA1562Q BTL AmplifierRangkaian TDA1562Q - 70 Watts BTL Amplifier
The TDA1562Q contains a mono BTL class-H power amplifier output. At low output power, up to 18 W, the device operates as a normal BTL amplifier. When a larger output voltage swing is required, the internal supply voltage is lifted by means of the external electrolytic capacitors. Due to this momentarily higher supply voltage of the obtainable output power is 70 W.
Besides shortcircuit protection and thermal protection (Almost 145 degree), this output impedance amplifiers offer a protection, if the impedance it is low Than 0.5 ohms the circuit is deactivated.
Feature of TDA1562Q BTL Amplifier
* Output power:----------------------36W RMS into 4R
* Music power:-----------------------70W into 4R
* Frequency response:---------------1dB down at 28Hz and 55kHz
* Input sensitivity:-------------------130mV RMS (for 36W into 4?)
* Harmonic distortion:----------------typically 0.2% (see graphs)
* Signal-to-noise ratio:----------------95dB unweighted (22Hz to 22kHz)
TDA 2004 BTL|Stereo Amplifier
Saturday, November 13, 2010 11:14 PM
This present here is a 20Watts mono and 10Watt Car Stereo Amplifier circuit using IC TDA2004.
Rangkaian TDA 2004 BTL|Stereo AmplifierRangkaian TDA 2004 BTL|Stereo Amplifier
The TDA2004 is a class B dual audio power amplifier in MULTIWATT [package Designed specifically for car radio applications. TDA2004 has low noise, low distortion, and robust. The robustness is supported by its operation safety protection features: very inductive loads, load dump voltage surge, overheating, the output AC-ground short, fortuitous open ground. Other Important Things is space and cost saving: very low external components counts, and very simple mounting system with no need for electrical isolation Between the package and the heat sink Because the heat contact metal of the package is already connected to ground.
TDA2004A PinningTDA2004A Pinning
TDA2002 Amplifier Circuit
Saturday, November 13, 2010 4:41 PM
Kit Amplifier TDA2002 This is a power amplifier circuit which built using a TDA2002 power amplifier IC module. These are replacements for the original LM383 which is no longer available. It is easy to build and has a minimum of external components. The module has both short circuit protection and thermal protection. It can drive loads as low as 1.6 ohm and is capable of delivering over 10 watts from a 16 V supply.
Rangkaian Amplifier TDA2002Rangkaian Amplifier TDA2002
The small amplifier is constructed around the TDA2002 IC, capable of delivering 4Wrms at 4ohms. The supply voltage may be anywhere between 8 and 18V, and the IC will accept transient voltage peaks of up to 28V without damage. The additional features of TDA 2002, very low number of external components, ease of assembly, space and cost saving, are maintained. The device provides a high output current capability (up to 3.5A) very low harmonic and cross-over distortion. Completely safe operation is guaranteed due to protection against DC and AC short circuit between all pins and ground, thermal over-range.
List Component
R1 : potentiometer 10 k ohm
R2 : 220 ohm 1/4 watt resistor
R3 : 2R2 ohm 1/4 watt resistor
R4 : 1 ohm 1/4 watt resistor
IC1 : TDA2002 amplifier module 1, Heat sink
C1 : 10uF/50V electrolytic capacitor
C2 : 470uF/16V electrolytic capacitor
C3 : 2200uF/25V electrolytic capacitor
C4 : 100 nF mylar 1
C5 : 100 nF monoblock 1
C6 : 100uF ecap 1
TDA1516Q Stereo Amplifier Circuit
Saturday, November 13, 2010 2:20 AM
This following is a simple stereo amplifier circuit, with minimal external components. It use only one opamp. TDA1516Q, that is capable to give output power 2 x 5Watt in the 4 ohms, with 0.5% distortion. The capacitor C5, it Should in pins placed near the IC TDA1516Q.
The amplifier circuit can be used to drive small personal computer speakers. They are widely used in automotive sound systems, portable consumer products, digital players, telephony, and automotive head units. In some commercial equipment, they can also be found in in-dash DVD player, digital class and active subwoofers power amplifiers for cars and Hi-Fi applications.
Rangkaian TDA1516Q Stereo Amplifier Rangkaian TDA1516Q Stereo Amplifier
The TDA1516 an integrated class B output amplifier enclosed in a 13-lead single in-line plastic power package primarily designed for car radio applications due to its features such as flexible leads, identical inputs, load dump protection, good ripple rejection, low thermal resistance, mute/standby switch, reverse polarity safe, fixed gain, thermally protected, high output power, capability to handle high energy on outputs, flexibility in use, no switch-on/switch-off plop, low offset voltage at output, and requires very few external components
List Component
C1-C2 : 220nF Ceramic Capacitors
C3 : 100uF/25V Electrolytic Capacitors
C5 : 2200uF/25V Electrolytic Capacitors
C6-C7 : 71000uF/40V Electrolytic Capacitors
F1 : 2A Fuse
D1 : 1N5408
IC1 : TDA1516Q
M1-M2 : Loudspeaker 10w/4ohm
9 Volt Headphone Amplifier NE5534
Saturday, November 13, 2010 2:19 AM
While doing research for Designing an Opamp headphone amplifier circuits portable, I built a portable headphone amplifier for testing purposes. EACH channel uses a single Burr-Brown Op-Amp NE5534 in a inverting configuration. It has adequate current capability to drive most headphones without an output stage. I have Used it with Sennheiser 465s and achieved ear-splitting volume. The amplifier is ideal as a booster for power-conserving stereo sources Such as portable CD players and for interfacing with passive EQ networks Such as tone controls or a headphone acoustic simulator.
The schematic for one channel of the amplifier is shown in figure below
Rangkaian 9 Volt Headphone Amplifier NE5534Rangkaian 9 Volt Headphone Amplifier NE5534
List Component:
P1 : 22K Dual gang Log Potentiometer
R1,R5 : 18K 1/4W Resistors
R2,R3,R4,R6: 68K 1/4W Resistors
C1,C2,C6 : 4µ7/25V Electrolytic Capacitors
C3,C7 : 22pF Ceramic Capacitors
C4,C5,C8 : 220µF/25V Electrolytic Capacitors
IC1 : NE5532 Dual Op-amp
J1 : 3.5mm Stereo Jack Socket
SW1 : SPST Slide or toggle switch
B1 : 9 Volt PP3 battery
NE5532 Pinning
The NE5532 is a very convenient package of two 5534s in one 8-pin devices with internal unity-gain compensation, as there are no spare pins. The 5534/2 is a low-distortion, low-noise device, having also the ability to drive low-impedance loads to a full voltage swing while maintaining low distortion. Furthermore, it is fully output short-circuit proof. Therefore, this circuit was implemented with a single NE5532 chip forming a pair of stereo, inverting amplifiers, having an ac gain of about 3.5 and capable of delivering up to 3.6V peak-to-peak into a 32 Ohm load (corresponding to 50mW RMS) at less than 0.025% total harmonic distortion (1kHz & 10kHz).
15 Watt Stereo Power Amplifier using TDA4935
Saturday, November 13, 2010 1:36 AM
TDA4935 is bipolar stereo amplifier IC that can be wired as a 2X15W stereo amplifier or a 30W mono BTL amplifier. The IC also features built in circuitry for over load protection and over temperature shut down. Here the IC is wired in stereo mode in order to deliver 15W power on each speaker. The circuit does not require a dual power supply and it can be powered from anything between 8 to 24V.Here I am using 24V for getting maximum output power.
The circuit can be powered from anything between 8 to24V.
Use 20W, 4 Ohm speakers for K1 and K2.
All electrolytic capacitors must be rated at least 25V.
Amplifier BTL 24 watt Menggunakan IC TDA1516
Saturday, November 13, 2010 1:35 AM
This is the circuit diagram of a simple 24W mono amplifier using IC TDA1516.The TDA1516 is an integrated class B power amplifier in a 13 pin SIL package. The IC has many useful features such as short circuit protection, load dump protection, thermal protection, reverse polarity protection etc. Here the IC is wired in BTL mode to deliver 24W of power into a 4 ohm speaker. This amplifier can be operated from a 12V DC supply and this makes it suitable for car audio applications.
Amplifier BTL 24 watt
Rangkaian Amplifier BTL 24 watt
IC TDA1516
The TDA1516BQ contains two identical amplifiers with differential input stages. This device can be used for stereo or bridge applications. The gain of each amplifier is fixed at 20 dB. A special feature of this device is the mute/stand-by switch which has the following features:
· low stand-by current (< onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_HVys8w-tJac/Sq1ExFNHDqI/AAAAAAAAAYM/IF-LSOlMn0U/s1600-h/IC+TDA1516.bmp">IC TDA1516BQ
Pin IC TDA1516
1 -INV1 non-inverting input 1 8 BS2 bootstrap 2
2 INV inverting input 9 OUT2 output 2
3 GND1 ground (signal) 10 VP supply voltage
4 Vref reference voltage 11 M/SS mute/stand-by switch
5 OUT1 output 1 12 RR supply voltage ripple rejection
6 BS1 bootstrap 1 13 -INV2 non-inverting input 2
STK4050II-200 Watt Audio Amplifier
Saturday, November 13, 2010 1:35 AM
Amplifier power is a circuit of electronics that is used to strengthen the power (or energy in general). In the field of audio, amplifier will amplify the sound signal (which has been expressed in the form of electric current) on the input it into electric current is stronger at the output. The amount of strengthening is often known by the term gain. Value of the gain is expressed as a function of frequency is called the transfer function.
So the gain is the result of the power output (Pout) and power at the input to its function in the form of frequency. The size of the gain, (G) is usually the Decibel (dB).
200 Watt Audio Amplifier
Skema Rangkaian Power Amplifier 200 watt
200 Watt Audio Amplifier
Equivalent Circuit of IC STK4050 II
Features IC STK4050II
Compact package for thin-type audio sets
Member of pin-compatible series with outputs of 20 to 200W
Easy heatsink design to disperse heat generated in thintype
stereo sets
Constant-current circuit to reduce supply switch-on and
switch-off shock noise
External supply switch-on and switch-off shock noise
muting, load short-circuit protection, thermal shutdown
and other circuits can be tailored-designed
Application Circuit Power Amplifier IC STK4050 II
Note:
To use the results of the max capacitor 10000Uf/80 Vot, with a pure tranformator 5 / 42 volt
provide a good cooling plate, the ic STK4050 II
68 Watt Audio Amplifier LM3886
Saturday, November 13, 2010 1:35 AM
Amplifier power is a circuit of electronics that is used to strengthen the power (or energy in general). In the field of audio, amplifier will amplify the sound signal (which has been expressed in the form of electric current) on the input it into electric current is stronger at the output. The amount of strengthening is often known by the term gain. Value of the gain is expressed as a function of frequency is called the transfer function.
So the gain is the result of the power output (Pout) and power at the input to its function in the form of frequency. The size of the gain, (G) is usually the Decibel (dB).
68 Watt Audio Amplifier LM3886
LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4 load and 38W into 8 with 0.1% THD+N from 20Hz-20kHz.
The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.
The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.
68 Watt Audio Amplifier Skema rangkaian LM3886 68 Watt power amplifier
IC Power LM3886 Layout IC Power LM3886
Notice:
* 68W cont. avg. output power into 4 at VCC = ±28V
* 38W cont. avg. output power into 8 at VCC = ±28V
* 50W cont. avg. output power into 8 at VCC = ±35V
* 135W instantaneous peak output power capability
* Signal-to-Noise Ratio >= 92dB
* An input mute function
* Output protection from a short to ground or to the supplies via internal current limiting circuitry
* Output over-voltage protection against transients from inductive loads
* Supply under-voltage protection, not allowing internal biasing to occur when |VEE| + |VCC| <= 12V, thus eliminating turn-on and turn-off transients
* 11-lead TO-220 package
* Wide supply range 20V - 94V.
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80 watt Amplifier Menggunakan Op-Amp LM12
Saturday, November 13, 2010 1:34 AM
This is 80Watt power amplifier OCL circuit using devices pillar is the integrated circuit LM12. This interesting routes many good bass and treble alive. If a friend is the CD therefore has a beautiful voice and Pre Tone Control is good that some will take something very magical.
Importantly should choose Power supply source, which has been fairly high voltage class 38Vdc GND 38V-3A is the current low level. To decorate the fines resulting from the size finely R4 2 ohm/4W Idle current about 30mA, or with the whole center just before. Almost forgotten friends should choose the material is good, good, especially IC LM12 and Transistor everyone.
80 watt Amplifier LM12
Skema rangkaian 80 watt Amplifier LM12
The LM12 is a power op amp capable of driving ±25V at ±10A while operating from ±30V supplies. The monolithic IC can deliver 80W of sine wave power into a 4Ω load with 0.01% distortion. Power bandwidth is 60 kHz. Further, a peak dissipation capability of 800W allows it to handle reactive loads such as transducers, actuators or small motors without derating. Important features include:
* input protection
* controlled turn on
* thermal limiting
* overvoltage shutdown
* output-current limiting
* dynamic safe-area protection
The IC delivers ±10A output current at any output voltage yet is completely protected against overloads, including shorts to the supplies. The dynamic safe-area protection is provided by instantaneous peak-temperature limiting within the power transistor array.
The turn-on characteristics are controlled by keeping the output open-circuited until the total supply voltage reaches 14V. The output is also opened as the case temperature exceeds 150°C or as the supply voltage approaches the BVCEO of the output transistors. The IC withstands overvoltages to 80V.
19 Watt Bridge Amplifier IC LA4440
Saturday, November 13, 2010 1:34 AM
Here is a circuit Bridge 19 watt amplifier using IC LA4440 from Sanyo.It uses very less components other than the IC LA4440.A very high quality circuit with respect to its cost.
19 watt bridge amplifierSkema rangkaian 19 watt bridge amplifier
Component List
U1...................IC LA4440
R1...................2K2
RV1.................Potensiometer
C1...................100nF
C2, C3............47uF
C4..................2u2
C5..................100uF 25V
C6..................2200uF 25V
C7, C8...........47uF 25V
SP1................4ohm 25W
the IC LA 4440 is wired as a bridge amplifier to deliver a 19 W Rms on a 4 Ohm speaker. The IC has built in thermal, over voltage and short circuit protection.The IC also incorporates a audio muting function,but that is not used here.
Note:
Use a 12 V DC/ 3 Ampere current power supply .
Don’t forget to fit a proper heat sink with IC.
Use a 4 Ohm speaker as.
PCB Stereo 19 Watt Bridge Amplifier
Layout PCB Stereo 19 Watt Bridge Amplifier
IC Power LA4440
IC LA4440
Data IC LA4440
Maximum supply voltage.............................18 V.
Allowable power dissipation Pd max............15 W.
Operating temperature Topr........................–20 to +75.
Storage temperature Tstg............................–40 to +150.
Voltage gain VG..........................................49.5 to 53.5.
Output power PO....................................... Stereo 06 W, Bridge 19 W.
Input resistance ri ............................. ....... 30kOhm.
56 Watt Audio Amplifier LM3876
Saturday, November 13, 2010 1:34 AM
Here is High-Performance 56 Watt Audio Power Amplifier with Mute Circuit used IC LM3876. an output mute function which can be used to eliminate switch-on and switch-off "thumps" to the loudspeaker load. the circuit capable of delivering 56 Watt into 8ohm load. The output stage is protected against short circuit to ground or either supply rail. Protection against transients from inductive loads is also provided at the output stage via internal clamp diodes.
56 Watt Audio Amplifier LM3876
Skema rangkaian 56 Watt audio amplifier LM3876
The IC LM3876 also contains thermal shut-down protection which comes into operation if the chip temperature exceeds its safe operating range, and under-voltage shut-down in the event it to operate properly. When S1 is closed switch-on / switch-off muting is enabled. Applications include self-powered speakers, surround-sound amplifiers and compact stereo systems.
IC LM3876
Parameters IC LM3876
Power@ 4Ohms, 1% THD...................60 Watt.
Power@ 8Ohms, 1% THD..................45 Watt.
Power@ 8Ohms, 10% THD................56 Watt.
THD Conditions.................................Po=40W @ Vs=±35V.
User Supply........................................35 Volt.
Supply Range.....................................+24 - +84V.
Temperature Min...............................-20 deg C.
Temperature Max..............................85 deg C.
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48 watt Amplifier menggunakan TDA1514A
Saturday, November 13, 2010 1:34 AM
This is 48 Watt Amplifier by IC TDA1514A. the IC TDA1514A supports mute and stand-by modes. I’ve never built this one, so I’ve got no suggestions concerning practical construction.
48 watt Amplifier menggunakan TDA1514ASkema rangkaian 48 Watt amplifier
Note:
Use -25 V+25 V DC for powering the circuit.
The IC must be heatsinked.
For optimum performance input and output must be separately grounded.
The IC TDA1514A integrated circuit is a hi-fi power amplifier for use as a building block in radio, tv and other audio applications. The high performance of the IC meets the requirements of digital sources. The circuit is totally protected, the two output transistors both having thermal and SOAR protection. The circuit also has a mute function that can be arranged for a period after power-on with a delay time fixed by external components.
IC TDA1514A
Parameters IC TDA1514A
Supply voltage range......................................Min ± 10 V, Max ±30 V.
Output power, VP = ± 23 V, RL = 4 Ohm..........48 Watt.
Closed loop voltage gain................................30DB.
Input resistance............................................20 KOhm.
Output current (repetitive peak)......................Max 8 A.
Storage temperature range............................-55 to + 150 °C.
Mute voltage................................................7.25 V.
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22watt Audio amplifier Menggunakan TDA2040.
Saturday, November 13, 2010 1:33 AM
Here is a 22watt Audio amplifier circuit uses IC TDA2040. TDA2040 is a monolithic power amplifier IC intended for use as a high quality, class AB audio power amplifier. The TDA2040 is designed to operate from a split power supply and no electrical isolation is needed between the mounting tab and its heatsink. It provides a high output current and has very low harmonic and crossover distortion.
22watt Audio amplifier TDA2040Skema rangkaian 22watt Audio amplifier
Note:
Use ± 20V DC for powering the circuit.
The IC must be heatsinked.
Uses 4 Ohm Speaker
For optimum performance input and output must be separately grounded.
PCB layout amplifier TDA2040PCB layout amplifier TDA2040
Parameters IC TDA1514A IC TDA 2040
IC TDA2040
Supply Voltage........................................ ± 20 V.
Input Voltage........................................... ± 20 V.
Differential Input Voltage......................... ± 15 V.
Output Peak Current (internally limited).... 4 A.
Power Dissipation at Tcase = 75 °C........... 25 W.
Storage and Junction Temperature......... – 40 to + 150 °C.
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32 Watt Audio Amplifier menggunkan IC TDA2050
Saturday, November 13, 2010 1:33 AM
There is a circuit uses a high quality audio amplifier IC TDA2050. The power amplifier can provide 32 watt rms into 4ohm load and 25 watt rms into 8ohm. The circuit features low harmonic and crossover distortion and a low external component count.
TDA2050 Power Amplifier Skema rangkaian TDA2050 Power Amplifier
Voltage gain is 27dB as shown, but this can be changed by using a different value resistor for the feedback path (R4, currently 22k, between pins 2 and 4). The amplifier must not be operated at any gain less than 10 (20dB) as set by R4 and R5, as it will oscillate. In some cases, an inductor may be needed in series with the output to prevent instability with capacitive loads (10 turns of 0.5mm wire wound around a 10 Ohm 1W resistor). The most common capacitive load is the speaker cable itself, and 'audiophile' leads are often worse than standard grade cables in this respect.
The 1 Ohm resistor (R6) should be a 1W or 0.5W type, and all others should be 1/4W 1% metal film (as I always recommend). All electrolytic capacitors should be rated at 50V if at all possible, and the 100nF (0.1uF) caps for the supplies should be as close as possible to the IC to prevent oscillation. C1 should be a bipolar (non-polarised) electrolytic, or may be plastic film if you prefer.
The supply voltage should be about ±25 Volts at full load, which will let this little guy provide a maximum of 25 Watts (rated minimum output at 25°C). To enable maximum power, it is important to get the lowest possible case to heatsink thermal resistance. This will be achieved by mounting with no insulating mica washer, but be warned that the heatsink will be at the -ve supply voltage and will have to be insulated from the chassis.
Layout PCB Amplifier TDA2050
Layout PCB Amplifier TDA2050
Parameter IC TDA 2050
IC Tda2050
Supply Voltage........................................... ±25 V.
Input Voltage............................................... VS.
Differential Input Voltage............................. ±15 V.
Output Peak Current (internally limited)........ 5 A.
Power Dissipation TCASE = 75°C.................. 25 W.
Storage and Junction Temperature............. -40 to 150 °C.
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Audio Amplifier IC STK 400xx
Saturday, November 13, 2010 1:33 AM
There is Amplifier circuit based on STK400xx series. The amplifier circuit will give you good quality of sound unexpensive too since STK40xx series have low price. It is easy we make a power amplifier using only few external components. The STKxxxx amplifiers, for them we will find in enough eponymous stereo amplifiers , but also in enough activety loudspeakers.
Rangkaian Amplifier STK 400xx
Skema Rangkaian Amplifier STK 400xx
Component list
R1-4................................. 1Kohm
R2.................................... 33Kohm
R3-8................................. 100ohm
R5.................................... 0.22ohm 5W
R6.................................... 10ohm 2W
R7.................................... 6,8ohm 2W
R9....................................12Kohm
R10..................................10Kohm
R11.................................. 680ohm
C1.................................... 560 pF 100V ceramic or mylar
C2-7................................. 1 uF 63V MKT
C3-12............................... 220 uF 63V
C4-5-10............................ 100 pF
C6-9................................ 47uF 63V
C8................................... 100 nF 100V MKT
C11................................. 1 nF 100V MKT
C13................................. 100 uF 25V
C14................................. 10pF 100V ceramic or mylar
L1................................... 3μH [15 turns of 1mm around R6] 100V ceramic or mylar
F1-2................................ 2A Fuse fast
IC1=STK4036.................. STK4044
STK40xx Series:
STK 4036 > Supply: ±35V - ±53,5V; Power (8R load): 50W.
STK 4038 > Supply: ±40V - ±58V; Power (8R load): 60W.
STK 4040 > Supply: ±43V - ±63V; Power (8R load): 70W.
STK 4042 > Supply: ±46V - ±67V; Power (8R load): 80W.
STK 4044 > Supply: ±51V - ±74V ; Power (8R load): 100V.
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20 watt Mono Amplifier Used IC LM1875
Saturday, November 13, 2010 1:33 AM
This audio power amplifier project is based on IC LM1875 . It is able to deliver up to 30W of power using an 8 ohm load and dual 30V DC power supplies. It is designed to operate with minimum external components with current limit and thermal shutdown protection features . Other features include high gain, fast slew rate, wide power supply range, large output voltage swing and high current capability.
The LM1875 has a smaller package than the TO-220 package used for the LM3875. As a result, the feedback resistor can not be connected the same way I did for the LM3875. On the positive side: The package does not contain many unused pins.
LM1875 mono amplifier 20 watt
Skema rangkaian 20 watt mono amplifier
The following components will be used:
* LM1875 Power OpAmp
* 4 capacitors BC 1000uF/50V
IC LM1875 description
The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications.
The LM1875 delivers 20 watts into a 4 /8 ohm load on ±25V supplies. Using an 8 ohm load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.
The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.
Features IC LM1875
• Up to 30 watts output power.
• AVO typically 90 dB.
• Low distortion: 0.015%, 1 kHz, 20 W.
• Wide power bandwidth: 70 kHz.
• Protection for AC and DC short circuits to ground.
• Thermal protection with parole circuit.
• High current capability: 4A.
• Wide supply range 16V-60V.
• Internal output protection diodes.
• 94 dB ripple rejection.
• Plastic power package TO-220.
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LM3875 high audio Amplifier
Saturday, November 13, 2010 1:32 AM
The LM3875 is a high-performance audio power amplifier capable of delivering 56W of continuous average power to an 8 load. The performance of the LM3875, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, caused by shorts to the supplies, thermal runaway, and instantaneous temperature peaks.
Rangkaian LM3875 audio amplifier Skema rangkaian LM3875 audio amplifier
This amplifier circuit is based on the standard non-inverted GainClone configuration. I did some calucaltions on the feedback resistor and other components in order to check the gain etc. Please find some more background on the calculations relevant for GainClones on the background section
Parameters IC LM3875
Output Current 6000 mA.
Offset Voltage max, 25C 10 mV.
Gain Bandwidth 8 MHz.
Supply Min 20 Volt.
Supply Max 84 Volt.
Supply Current Per Channel 30 mA.
PowerWise Rating 2 3750 uA/MHz.
Slew Rate 11 Volts/usec.
Input OutputType Not Rail to Rail.
Max Input Bias Current 1000 nA.
Special Features AvCl>10.
Function Op Amp.
Channels 1 Channels.
Temperature Min 0 deg C.
Temperature Max 70 deg C.
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6 watt Stereo Amplifier IC LA4440
Saturday, November 13, 2010 1:32 AM
There is a 6 watt Stereo Amplifier based IC LA4440. This circuit very simple because uses very less components other than the IC LA4440.
rangkaian stereo amplifier IC LA4440
Skema rangkaian stereo amplifier IC LA4440
Features IC4440:
Built-in 2 channels (dual) enabling use in stereo and bridge amplifier applications.
Dual : 6Watt *2 (typ.)Bridge : 19Watt (typ.)
Minimun number of external parts required.
Small pop noise at the time of power supply ON/OFF and good starting balance.
Good ripple rejection : 46dB (typ.)
Good channel separation.
Small residual noise (Rg=0).
Low distortion over a wide range from low frequencies to high frequencies.
Easy to design radiator fin.
Built-in audio muting function.
Built-in protectors.
a. Thermal protector
b. Overvoltage, surge voltage protector
c. Pin-to-pin short protector
IC LA4440
Layout IC LA4440
Pin
1 NF1
2 IN 1
3 Preamp. GND
4 Audio Muting
5 DC
6 IN2
7 NF2
8 Power AMP GND2
9 B.S2
10 OUT2
11 Vcc
12 OUT1
13 B.S1
14 Power AMP GND1
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18watt audio amplifier TIP41/TIP42
Saturday, November 13, 2010 1:32 AM
18Watt Power Amplifier circuit is quite simple and does not require a lot of components to make it. 18 Watt Power Amplifier can be directly connected to the CD player, MP3 player or other audio devices without having to use a pre-amp tone control type. Because the OCL type amplifier, the frequency response produced by 18-watt amplifier is very good. Circuit Power Amplifier 18Watt you can see in the picture below.
amplifier TIP41/TIP42Skema Rangkaian 18watt audio amplifier TIP41/TIP42
List Component
P1______________22K Log. Potentiometer (Dual-gang for stereo)
R1______________1K 1/4W Resistor
R2______________4K7 1/4W Resistor
R3______________100R 1/4W Resistor
R4______________4K7 1/4W Resistor
R5______________82K 1/4W Resistor
R6______________10R 1/2W Resistor
R7______________R22 4W Resistor (wirewound)
R8______________1K 1/2W Trimmer Cermet (optional)
C1______________470nF 63V Polyester Capacitor
C2,C5____________100µF 3V Tantalum bead Capacitors
C3,C4____________470µF 25V Electrolytic Capacitors
C6______________100nF 63V Polyester Capacitor
D1______________1N4148 75V 150mA Diode
IC1_____________TLE2141C Low noise, high voltage, high slew-rate Op-amp
Q1_____________BC182 50V 100mA NPN Transistor
Q2_____________BC212 50V 100mA PNP Transistor
Q3_____________TIP42A 60V 6A PNP Transistor
Q4_____________TIP41A 60V 6A NPN Transistor
J1______________RCA audio input socket
Note:
* Q3 and Q4 should be cooler or heatsink.
* Good Grounding very influential, if not better then the grounding of the power amplifier hum will be heard. Ground A1, P1, C2, C3 & C4 are connected to a ground point, while the ground is connected at point C6 output ground.
10Watt Amplifier Manggunakan IC TDA2003.
Saturday, November 13, 2010 1:32 AM
This is a circuit of a 10W amplifier using IC TDA2003 . The IC can easily deliver 10W to a 4 Ohms load at 18V DC supply voltage. The IC can be also operated from 12V and that makes it applicable in car audio systems. The useful features of TDA2003 includes short circuit protection between all pins, thermal overload protection, low harmonic distortion, low cross over distortion etc.
Rangkaian Amplifier IC TDA2003Skema Rangkaian Amplifier IC TDA2003
LayOut PCB Amplifier IC TDA2003
LayOut PCB Amplifier IC TDA2003
Notes
* Use 18V DC for powering this circuit.
* TDA2003 must be fitted with a heat sink.
This circuit designed as per the datasheet from the manufacturer and found to be working fine. Capacitor C7 performs the job of input DC decoupling.R2 and R3 is used to set the gain of the amplifier.C3 and R1 determines the upper cut off frequency.C6 and R4 and meant for increasing stability at high frequencies. Capacitor C5 couples the output to the speaker.
Pin TDA 2003
Absolute Maximum Rating IC TDA 2003
Peak supply voltage (50ms)............ 40 V
DC supply voltage..................... 28 V
Operating supply voltage.............. 18 V
Output peak current (repetitive)...... 3.5 A
Output peak current (non repetitive).. 4.5 A
Power dissipation at Tcase = 90°C..... 20 W
Tj Storage and junction temeperature...-40 to 150 °C.
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