Power amplifier circuit using mosfet

Electronics Help Care September 11, 2025 Amplifier Diagram

Power amplifier circuit using MOSFET:

This is the Power amplifier circuit using a MOSFET. Here, use J162 and k1058 MOSFET. This pair of MOSFETs can make 100 watts. We can use 25-0-25 voltage to 50-0-50 voltage. It’s a mono circuit diagram. J162 P channel and k1058 N channel.

2SK1058
Type of Transistor: MOSFET
Type of Control Channel is N -N-Channel
Maximum Power Dissipation is 100 W
Maximum Drain-Source Voltage is 160 V
Maximum Gate-Source Voltage is 15 V
Minimum Gate-to-Source Cutoff Voltage is 0.15 V
Maximum Drain Current is 7 A
Maximum Junction Temperature is 150 °C

J162
Type of Transistor: MOSFET
The type of Control Channel is P-channel
Maximum Power Dissipation is 100 W
Maximum Drain-Source Voltage is 120 V
Maximum Gate-Source Voltage is 15 V
Minimum Gate-to-Source Cutoff Voltage is 0.15 V
Maximum Drain Current is 7 A
Maximum Junction Temperature is 150 °C

Mini amplifier circuit diagram using 2SC5200 and 2SA1943:

This is a mini amplifier circuit diagram using 2SC5200 and 2SA1943 transistors. It’s a mono board. It’s a PNP and an NPN amplifier board. We can use any PNP and NPN transistors. like c5198 and a1941. 2SC2922 and 2SA1216. We can use 20-0-20 voltage to 50-0-50 voltage. positive, negative, and ground voltage.

Mini amplifier circuit diagram using 2sc5200 and 2sa1943

This is the Speaker protection circuit diagram. It can protect our Speaker from the burn. 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.