This is a Stereo amplifier circuit board using 2SC5200 and 2SA1943. It’s a stereo diagram. We can get a 200W+200W output. here can use 25-0-25 voltage to 50-0-50 voltage. dual voltage needs. positive, negative, and ground voltage. PNP and NPN transistor diagram. The output watts depend on the voltage.

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:
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.
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.

Transistor circuit diagram 2sa1943 2sc5200:
This is an audio transistor circuit diagram 2sa1943 2sc5200. It’s a mono amplifier. This amplifier can make 100 watts. PNP and NPN are used here. We can also use other PNP and NPN transistors. Here in this amplifier, we can use a 20-0-20 voltage to a 50-0-50 voltage and 3 amperes. For the stereo amplifier, we need a dual circuit. We know that voltage X amperes= watts. Then 20 volts 3 ampere= 20X3=60 watts. 30X3=90 watts. normally we can use 35-0-35 voltage to get a good performance.

Details about 2SC5200
2sc5200 Polarity is NPN. Max Collector Power Dissipation is 150 Watts. The Max Collector-Base Voltage is 250 Voltage. Max Collector-Emitter Voltage is 250 Voltage. The Max Emitter-Base Voltage is 5 Voltage. Maximum Collector Current is 17 amperes.
Details about 2SA1943
2sa1943 Polarity is PNP. Max Collector Power Dissipation is 150 Watts. The Max Collector-Base Voltage is 250 Voltage. Max Collector-Emitter Voltage is 250 Voltage. The Max Emitter-Base Voltage is 5 Voltage. Maximum Collector Current is 17 amperes.
Here we can see maximum voltage is 250 voltage can be applied to the Emitter and Collector, and the Base can take 5 volts. And the voltage ampere can take a maximum of 17.
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