This is an high power RF amplifier circuit. With high power output, the FM signal will cover wide area. The manufacture of amplifier is very simple and easy.

Schematic Diagram:

Component Parts:
C1, C2, C3, C4 = 10 – 80pF
C 5 = 10nF
C6 = 1000pF
C7 = 100nF
C8 = 2200mF/35V
L1 1 = coil with diameter of 10 mms, 1 mm
L2 7 = coils with diameter of 10 mms, 0,8 mm
L3 3 = coils with diameter of 10 mms, 1 mm
TR1 = BLY89
RFC = RF tsok

Below is stereo audio amplifier circuit based n single chip STK465. The Power IC will deliver 30W power output on each channel.

Schematic diagram:

This is complete project for 20W audio amplifier based on single amplifier chip TDA2040. Schematic diagram and PCB layout design were provided here. This amplifier require dual polarity power supply. Heatsink is a must yo keep the IC from overheating.

Schematic diagram: