LM390 power amplifier schematic
Circuit schematic above is / include power amplifiers that have low power output. 1 Watt output power is only based on the IC , and ic used LM390 , manufactered by NS and ic packaged in DIP-14. For output impedance have 4 OHm. Requires a minimum voltage 4 Volt and Maximum voltage is only 9Volt. Part List : Resistor R1________33K R2________510R R3________510R R4________2.7R Capacitor C1________100uF 16V C2________100uF 16V C3________10uF 16V C4________220uF 35V C5________10uF 16V C6________100n IC IC1_______LM390