2sc5200 and 2sa1943 transistor amplifier circuit

Electronics Help Care July 14, 2025 making transformer

This is a 2SC5200 and 2SA1943 transistor amplifier circuit diagram. It’s a mono diagram. This circuit uses four transistors and can produce 200 watts. We can use a 25-0-25 voltage to a 60-0-60 voltage. positive, negative, and ground voltage. We can use another PNP and NPN transistor.

4-ohm audio output. Here, the driver transistor is A940, and C2073 requires a heatsink to achieve optimal results.

Details about 2SC5200

2sc5200 Polarity is NPN. Max 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 2SA1943

2sa1943 Polarity is PNP. Max 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.

2sc5200 and 2sa1943 transistor amplifier circuit

DIY transistor amplifier driver circuit:

Here DIY transistor amplifier driver circuit board. This is the driver board for the transistor board. We can use 2 transistors to 60 transistors. per pair of transistors can make a maximum of 150 watts. Here, use 2 driver transistors, 2SC5200 and 2SA1943. 2sc5200 is an NPN transistor, and 2sa1943 is a PNP transistor. We can use this transistor as the main output transistor.

DIY transistor amplifier driver circuit

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.

DIY amplifier circuit diagram using TDA2030:

This is a DIY amplifier circuit diagram using a TDA2030 IC. It’s a mono audio circuit, so the stereo needs a dual board. We can use 12-0-12 voltage to 18-0-18 voltage and 3 amperes on this board. We can get 30 watts using 15-0-15 voltage. positive, negative, and ground voltage needs in this circuit. A dual IC is used in this board; it’s a bridge mode circuit. We can also use TDA2050 in this board.