Electronics Help Care Amplifier circuit diagram
Power amplifier circuit diagram using STK4040:
This is the Power amplifier circuit diagram using STK4040. This board can make 100 watts. It’s a mono diagram. we can use 30-0-30 voltage to 45-0-45 voltage. For stereo needs dual board. In this diagram can use
STK4024V,,STK4026V,STK4028V,STK4028X,STK4030V,STK4030X,STK4032V,STK4032X,STK4034V,STK4034X,STK4036V,STK4036X,STK4036XI,STK4038V,STK4038X,STK4038XI,STK4040V,STK4040X,STK4040XI,STK4042II,STK4042V,STK4042X,STK4042XI,STK4044II,STK4044V,STK4044X,STK4044XI. this all STK.
Class D amplifier circuit using IRF250N:
This is a Class D amplifier circuit using IRF250N. This diagram can make 300 watts of output. It’s a mono audio diagram. Here, use IRS2011 for the driver IC, and the IRF250N MOSFET for the output. This MOSFET can make 150 watts. Here, use 2 MOSFETs. 2X150=300 watts. We need 12 volts and a minimum of 100 volts to run this board. 12 volts for the driver IC IRS2011. A minimum 50-volt to 200-volt supply is needed for the MISFET.
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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