DIY amplifier circuit using STK4141:

This is DIY amplifier circuit using STK4141. We can get 25-0-25 watts using this diagram. we can use 15-0-15 voltage to maximum 24-0-24 voltage. the voltage depend with the IC quality. STK is the best sound quality amplifier. Sony Sound are maximum use STK IC. It’s a stereo audio diagram. this diagram also inculide bass tone circuit with pre-amplifier. The pre-amplifier uses 4558D IC.

The voltage is important to make good output watts. We know that Voltage X amperes watts.

Amplifier circuit diagram 200 watts:

This is an amplifier circuit diagram for 200 watts. This board produces 200 watts using dual TDA7297. It’s a bridge mode diagram. We can use 15-0-15 voltage to 24-0-24 voltage. It’s a mono board. The voltage should be a strong voltage to get a good output watts.

Amplifier circuit diagram 200 watts

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.

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Transistor circuit for an amplifier

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