Amplifier circuit using STK8280

Amplifier circuit using STK8280:

This is the amplifier circuit using STK8280. This diagram can make 80 watts using a minimum 45-0-45 to 65-0-65 voltage. It’s a mono circuit diagram. We can use STK8250, STK8260, STK8270, and STK8280 in this diagram. Here,  used some PNP and NPN transistors. 

Here have 100 watts resistpors will be minimum 1 watts. If 2 watts will be good. another all are can be 1/4. 

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.

The IC is here

Amplifier Diagram link 

100 watt amplifier board

We have another post for you. like Stk 4101   repairing amplifier,

Transistor circuit diagram

Build a Transformer or construct the transformer. Home Theater Circuit Diagram 5.1

Thanks a lot for being with us. If you want another post, then please visit our website.

We have another post for you. like repairing amplifiers. If you like electronics, please visit our other post. electronicshelpcare.com

Our Facebook page is Electronicshelpcare