DIY hifi amplifier circuit diagram:
This is the DIY hifi amplifier circuit diagram for a transistor. We can use any of the PNP and NPN transistors. Here, we are using the 2SC5200 and 2SA1943. This pair of transistors can make a maximum of 150 watts. This circuit operates with a 25-0-25 voltage to a 50-0-50 voltage. It’s a mono board for a stereo that needs 2 boards. Thanks, APEX, for making this board.

Details about 2SA1943
2sa1943 Polarity is PNP. The maximum collector power dissipation is 150 Watts. The maximum collector-base Voltage is 250 volts. Max Collector-Emitter Voltage is 250V. The Max Emitter-Base Voltage is 5V. The Maximum Collector Current is 17 amperes.
Details about 2SC5200
2sc5200 Polarity is NPN. The maximum collector power dissipation is 150 Watts. The maximum collector-base Voltage is 250 volts. Max Collector-Emitter Voltage is 250V. The Max Emitter-Base Voltage is 5V. The Maximum Collector Current is 17 amperes.

Amplifier circuit diagram using driver board:
This is an amplifier circuit diagram using a driver board. It’s a mono circuit using PNP and NPN transistors. It can make 600 watts of output using 60-0-60 voltage and 10 amperes. 60X10=600 watts. Here, we use 8 transistors. We can also use an extra transistor if we want. A maximum of 20 transistors can be used in this circuit.
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