4 Channel Home Audio Amplifier 11 watt using TDA1554This is a simple circuit. Just use a single IC, but the amplifier has 4 channels, 11 watts per channel. It is Philip TDA1554 number suitable for listening at home or in any vehicle. Just use the power supply 12-15 volt or will be used to increase any home theater sound system. The first 2-channel amplifier front speakers. And 2 to extend the back surround sound speakers, too.
Stereo amplifier 22 watts using TDA1554This circuit is a circuit-watt amplifier size at a reasonable 22W 22W. This is the mod is perfect for listening at home or in any vehicle. Is a simple circuit. Use small pieces of equipment and an IC. Is only one number TDA1554Q. And within a short-circuit protection circuit with the output. 22W+22W Stereo Power Amplifier with Single Chip IC using TDA1554 The principle of the circuit is. Circuit to receive input on each channel C1 and C2. This will signal coupling or filter out specific signal only The left channel input signal as the right to work. So I explained just left alone. Signal to pass from C1 to the Pin 1 and pin 2 of IC1. This position will stand a horizontal leg inverter protest Amplifiers not to phase out the output pin 6. And the second leg is the leg position in a power amplifier to phase Ting. Out through the output pin 8. Which it will be seen that output and second legs are legs 6 and Pin 8 are phase signals the opposite is to provide power W increases itself. Power consumption power that job. to use up about 5 A at 12V. The speaker will use a 4-ohm speaker so the sound is currently 22 watt, but if it uses any 8-ohm speaker. But Watts will be lowered again. While working in the circuit will generate heat at the IC Therefore the disc cooled.
TA8225 BTL Amplifiers circuit Datasheet Pinout
TA8225’s PCB. But I not have it. Thus I search on internet. The TA8225 is BTL audio power amplifier for consumer application. It is designed for 45W high power, low distortion, and low noise. It contains various kinds of protectors and the function of stand by SW.
The circuit diagram of TA8225
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In addition, the functions of output short or overvoltage detection and junction temperature are involved.
Operating supply voltage: VCC = 9~18V
High power output 45W at VCC=14.4V,F=1KHz,THD=10%,RL = 2 ohms)
Low distortion ratio : THD = 0.015%(typ) VCC = 13.2V,f=1kHz,Pout = 4W,RL=4 ohms.
-Built in stand by function (with pin(1) set at high, power is turned on)
+ Built in output short or over voltage detection circuit, output to VCC and output to GND short. (Pin(8): Open collector)
+ Built in junction temperature detection circuit. (Pin(2): Open collector)
+ Built in various protection circuits :
1.Thermal shut down, Over voltage
2.Output to GND short
3.Output to VCC short
4. Output to Output short
Pins operation of TA8225
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HA13118 – 18 W BTL Audio Power AmplifierIf you are looking for a nice amplifier for your private room. There are a lot of choices for you. A transistor is good, but the IC also well. Today I suggest you try to test HA13118. It is 18 W BTL Audio Power Amplifier for Hitachi. I like the AC motor for Hitachi. It is very durable. Good quality, even a brand from Japan. Of course, an audio IC is the same.
Why should use itThe HA13118 is a class AB amplifier integrated circuit. Hitachi designs them for component car stereo amplifiers. At the power supply voltage of 13.2 V and 4 Ω load speaker. This power IC provides an output power of 18W with 10% distortion. In general, we use it in the bridge amplifier in a car. They have basic features as follows.
- You can use it anywhere. Because It requires wide voltage supply of 8V to 18V in single voltage.
- At the current of 1A to 2A.
- Output current Io (peak) 4 A
- Power dissipation PT 15 W
- But max voltage is 26V
- Typical gain rates up to 55 dB.
- Less than 0.2% distortion at 1W
- Response frequencies from 30 Hz-30 kHz.
- Operating temperature Topr –30 to +80 °C
- Small outline package, easy to mount
- Internal each protection circuits
- Surge protection circuit
- Thermal shut-down circuit
- Ground fault protection circuit
- Power supply fault protection circuit
How does it workSee in the circuit above. Enter a power supply circuit, 12V. And then, enter an audio signal into the input. The signal flows through VR1. To adjust the level of the audio signal. Next, the C1 pass coupling signal to the input of IC1. And, the C2 eliminate the noises. After that, the audio signal gets into pin 3 of IC1. This is a bridge amplifier form(BTL). If you love Car amplifier circuit. You always see BTL amplifier. Because it gives high power in the same voltage. See circuit inside the IC has Left and right channel. We connect both amplifiers together. To increase more power wattage. We can observe from the pin 15(left channel) connects one wire of speaker. And pin 8(right channel) connects to another wire of the same speaker. Which the C7 and C8 will feedback a signal to be frequency response better. And, The C9, C10, R1, and R2 will reduce the noise signal. We hear a lower annoying hum in the background of power amplifiers. Because we add C11 and C12. If you increase C12-2200uF electrolytic more. It will reduce the ripple voltage of the voltage power supply.
Parts you will needIC1: HA13118 18 W BTL Audio Power Amplifier R1, R2: 2.2ohms 0.25W resistor VR1: Potentiometer 10K Electrolytic capacitor C1: 2.2uF 50V C3, C4, C6, C7, C8: 100uF 25V C5: 10uF 50V C12: 2,200uF 25V Ceramic capacitors C2: 100pF 50V C9, C10, C11: 0.1uF 50V Speaker 4 to 8 ohms Power supply 8V to 18V at 2A.
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