18 Watt Audio Amplifier with HA13118 | Schematic Diagrams

Schematic Diagrams

Useful schematic and wiring diagrams. ✔ ✔ Enjoy electronic circuits, let your idea comes to hardware

18 Watt Audio Amplifier with HA13118


This is a 18W audio amplifier circuit based on power IC HA13118. The supply voltage required for this circuit is 8 – 18V DC, at least 1 to 2 Amps. Maximum output power will only be obtained with a power supply of 18V at greater than 2 A, using a 4 ohm speaker. The power supply should be well filtered to reduce mains hum, a regulated supply will reduce noise even further. Extra filtering is unnecessary if operating from a battery supply.

18 Watt Audio Amplifier with HA13118 circuit


Resistors :R1, R2___________________ 2R2 ohmCapacitors :C1, C2, C4, C5, C6_______ 100uF/16V electrolytic capacitorC3_______________________ 10uF/16V electrolytic capacitorC7, C8, C12______________ 100nFC9_______________________ 2,200uF/25V electrolytic capacitorC10______________________ 1uF/50V electrolytic capacitorC11______________________ 100pFMisc.I.C._____________________ HA13118Heatsink

C10 is the input coupling capacitor and blocks DC from the input. C11 bypasses any RF which may be present at the input. C1 & C2 provide an AC ground for the inverting inputs of the IC. R1/C7 and R2/C8 provide a high frequency load for stability with difficult speakers. C5 and C6 provide “bootstrap” feedback for the IC. C9 and C12 provide power supply filtering. Don’t forget that heatsink is a must for this circuit.

Download 18 Watt Audio Amplifier with HA13118 full explanation HERE
Download HA13118 datasheet

Most Wanted Diagrams:


, , , , , , ,

Comments are currently closed.

Sponsored Link



Schematic Search

BatteryBlower motorBuickCadillacChevroletCigar LighterCircuit DiagramDodgeelectrical circuitElectrical SchematicElectrical SystemFordFuel PumpFuel Pump Relayfusefuse blockfuse boxFuse Holderfuse layoutfuse mapfuse panelGMCHeadlampHeaterHondaHornHorn RelayIgnition coilIgnition switchInstrument ClusterInstrument panelOldsmobilePontiacPower WindowRadioRelayschematic diagramStarter RelayStop LampStudebakerTurn SignalWiperWiring Diagrawiring diagramWiring Harnes

Schematic Diagrams

Powered by WordPress. Designed by SuperSidor. Schematic Diagram

Recent Posts