Electronics Help Care Amplifier circuit diagram
2.1 amplifier diagram using TDA7377:
This is a 2.1 amplifier diagram using the TDA7377 IC. This circuit can make 30+30 watts or 10+30+10 watts. This circuit is for 2.1. One is bass, and another 2 are surround. Bass can make 30 watts, and the surround are makes 10+10 watts. This circuit runs with 12 volts to 18 volts.
It is 2.0 dual-bridge (2×30W2 cross 30 W
2×30W) 4Ω with 2×10W+30W. It operates on 12V-18V DC. Requires a 12V DC, 5A minimum, power supply or car battery. It has one Bass vol for the subwoofer. and one surround vol for the surround speaker. here don’t have a master volume. If we need a master volume, we can also make a master volume in the audio input.
2.1 amplifier diagram using TDA7377.
Here needs sing;e voltage. positive and negative voltage. This circuit runs 12 volts to 18 volts. For this, we can use our car. Always use the best quality of transformer to get a strong output watts. The diode and capacitor should be good.
DIY amplifier circuit using STK4141:
This is a DIY amplifier circuit using STK4141. We can get 25-0-25 watts using this diagram. We can use 15-0-15 voltage to a maximum 24-0-24 voltage. The voltage depend with the IC quality. STK is the best sound quality amplifier. Sony Sound makes maximum use of STK IC. It’s a stereo audio diagram. This diagram also inculide bass tone circuit with a pre-amplifier. The pre-amplifier uses a 4558D IC.
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