Bridge amplifier

  
This circuit is for low voltage applications requiring high power outputs. Output power levels of LO W into 4 ohm from 6 V and 3 V into 8 ohm from 12 V are typical. Coupling capacitors are not necessary since the output dc levels will-be within a few tenths of a volt of each other
Bridge amplifier - schematic

Where critical matching is required the 500 K potentiometer is added and adjusted for zero dc current flow through the load.




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