Amplifier circuit diagram using STK0055

Electronics Help Care May 21, 2025 stk amplifier circuit diagram

Amplifier circuit diagram using STK0055:

This is an amplifier circuit diagram using the STK0055 IC. It’s a hybrid IC. This board’s output power is 55 watts. It’s a mono audio board. This circuit needs a dual power supply. The recommended voltage supply is 33V, and the maximum is 53V. The voltage should be positive and negative, and the ground voltage should be. 33-0-33 to 53-0-53 voltage.

This is the Speaker protection circuit diagram. It can protect our Speaker from burns. If the amplifier has any problems, this circuit can save our soundbox. Normally, when the transistor makes a short circuit, the voltage comes out from the speaker output line, and this circuit protects that voltage. This circuit should not allow direct voltage to be sent to the speaker. This circuit is essential for protecting the speaker

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.