Amplifier 200W

The power transistors of the 200W Afi circuit do not require the classic 2SC5200 and 2SA1943 quiescent current adjustment. The amplifier can deliver 100W RMS power with a 4-OHM speaker and a 200W RMS 8-OHM speaker. Amplifier operating voltage max. 2X50V DC 6A (2X33VAC or 2X36VAC transformers can be used) supply filter capacitors For usable bridge diodes between 4700uf… 10.000uf, ready KBU10M or 4 P600J 6 ampere diodes can be used. 330PF capacitor protects the amplifier from high frequency oscillations. If you cannot find a 330PF, you can use a 270PF capacitor instead.

An overexcitation detector can be used. You can find it in my projects or in the attachment.