Electronics Help Care electronics circuit diagram
Amplifier circuit diagram using stk011:
This is an amplifier circuit diagram using stk011. This circuit can produce 6.5 watts using 25-voltage to 38-voltage. it’s a mono audio board.
Power audio amplifier 6.5W
Supply Voltage Min: 25V Max: 38V
Icc 0: 40mA
Iout max.: 2.5A
Pout max: 6.5W
Load Resistance: 8Ohm
Bandwidth: 20Hz-20KHz
Input Resistance: –
THD: 2%
Gain: 35dB
This circuit doesn’t have speaker protection. here, we need a speaker protection circuit. here is the link to get the speaker protection circuit. Diagram is here
This is the Speaker protection circuit diagram. It can protect our Speaker from the burn. if the amplifier has any problem then this circuit can save our soundbox. Normally when the transistor makes a short circuit the voltage comes out from the speaker output line then this circuit protects that voltage. This circuit should not allow any direct voltage to be sent to the speaker. This circuit is very important for protecting the speaker.
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