The circuit is a 60Watts (30X2) TDA7377 amplifier circuit. This Integrated Circuit (IC) TDA7377 is a quad amplifier IC i.e. it has four inputs and outputs channels with each channel 15W peak power output. However, this design uses bridges of two channels to umake it a stereo amplifier, thus (30X2 = 60W) peak RMS. Additionally, this IC is a ready amplifying IC which requires just few external components for its operation. The main amplifying components are already inbuilt. As a result of this, it is convenient for even a learner to build an audio amplifier using the IC.
The components you need for this TDA7377 amplifier circuit are:
- TDA7377 IC
- 10KΩ (1) Resistor
- 1uF (2) Electrolytic Capacitors
- 45uF (1) Electrolytic Capacitor
- 10uF (1) Electrolytic Capacitor
- 1000uF (1) Electrolytic Capacitor
- 100nF (104) Ceramic Capacitor
- 9V or 12V Battery
When constructing this circuit, the integrated circuit should be mounted on a heat sink for cooling the IC. Meanwhile, if you want to power the circuit with a 12V adapter, if possible in cooperate a low power fan (something like a 5V fan is ok) to help in cooling the IC while operating.
When you connect the “standby” contact to the positive potential, it activates the amplifier.