Mutchus

2 x 18W Hi-Fi Stereo Power Amplifier based around two TDA2030 ICs. It has good input sensitivity, low distortion, good operating stability and full protection against overloads and output short-circuits. It can be used as a booster amplifier for existing small systems or to drive a second pair of speakers besides the ones already connected to the system. The board needs a symmetrical power supply of ±18Vdc/3A and can be connected to loads of 8 or 4 Ohm. Large heat sink is required for this circuit. Diagram shown below indicates only left channel. Make two circuits for for stereo version. Picture of the project: 18+18 Watt Hi-Fi Stereo Audio Amplifier Circuit Diagram Circuit Diagram: Diagram Shows Only One Channel Parts: R1 = 22K R2 = 680R R3 = 22K R4 = 1R-1w D1 = 1N4001 D2 = 1N4001 C1 = 1uf-25V C2 = 22uF-25V C3 = 100nF-63V C4 = 100nF-63V C5 = 100uF-25V C6 = 100uF-25V C7 = 220nF-63V IC = TDA2030 If it does not work: Check your work for possible dry joints, bridges across adjacent tracks...

This is the simple project of 18W Audio Amplifier Circuits Diagram Amplifier parts: P1_____________22K   Log. Potentiometer (Dual-gang for stereo)   R1______________ 1K   1 /4W Resistor R2______________4K7 1/4W Resistor R3____________ 100R   1 /4W Resistor R4______________4K7 1/4W Resistor R5_____________ 82K   1 /4W Resistor R6_____________ 10R   1 /2W Resistor R7_______________ R22   4W Resistor ( wirewound ) R8______________1K   1/2W Trimmer Cermet (optional)   C1____________ 470nF   63V Polyester Capacitor C2 ,C5 _________100µF    3V Tantalum bead Capacitors C3 ,C4 _________470µF   25V Electrolytic Capacitors C6____________ 100nF   63V Polyester Capacitor   D1___________ 1N4148   75V 150mA Diode   IC1________ TLE2141C   Low noise, high voltage, high slew-rate Op-amp   Q1____________BC182   50V 100mA NPN Transistor Q2____________BC212   50V 100mA PNP Transistor Q3___________ ...