AmplifierCircuits

18 Watt Audio Amplifier circuit 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___TIP42A 60V 6A PNP Transistor Q4___TIP41A 60V 6A NPN Transistor J1___RCA audio input socket

The HA13118 is power IC designed for component car stereo amplifiers. At 13.2 V to 4 Ω load, this power IC provides an output power of 18W with 10% distortion. It is easy to design as this IC employs internal each protection circuit and the new small package.  Circuit Diagram: 18 W BTL Audio Power Amplifier HA13118 Datasheet for HA13118: Download

Features: 18W OUTPUT POWER: RL = 8Ω/4Ω; THD = 10% HIGH EFFICIENCY WIDE SUPPLY VOLTAGE RANGE (UP TO ±25V) SPLIT SUPPLY OVERVOLTAGE PROTECTION ST-BY AND MUTE FEATURES SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION Circuit Diagram: 18W mono class-D Amplifier Datasheet for TDA7481:   Download

General Description: The AN7170 is an integrated circuit manufactured by  high voltage process designed for power amplifier of bus,  track amplifier. Wide operating supply voltage range with  output of 18W at 26.4V. It can be widely used for bus,  truck amp., car stereo, home entertainment stereo set  and TV sound multiplex output. Circuit Diagram: 18W Audio Power Amplifier Circuit circuit diagram

Features: 18W OUTPUT POWER: RL = 8Ω/4Ω; THD = 10% HIGH EFFICIENCY WIDE SUPPLY VOLTAGE RANGE (UP TO  ±25V) SPLIT SUPPLY OVERVOLTAGE PROTECTION ST-BY AND MUTE FEATURES SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION Circuit Diagram: Circuit diagram for 18W MONO CLASS-D AMPLIFIER