Portable Headphone Amplifier Circuit Diagram. This involves the use of a lithium ion prismatic rechargeable 340948 battery featuring a nominal voltage of 3 7v and a current rating of 1200mah. The headphone amplifier provides a maximum output of 1 watt to an 8 ohm load by an input level of 500 mv.

Pure Class A Headphone Amplifier Schematic Circuit Diagram
Pure Class A Headphone Amplifier Schematic Circuit Diagram from www.learningelectronics.net

An interesting upgrade for this circuit was suggested by mike baum ny usa. Portable headphone amplifier circuit. By showing both the left right channels.

The portable headphone amplifier circuit is very easy to build because it uses only 3 transistors.

This headphone amplifier circuit is made by using lm386 audio amplifier ic. Figure 1 schematic of headphone amplifier. The portable headphone amplifier can be directly connected to the cd player or tape recorder. This headphone amplifier circuit is made by using lm386 audio amplifier ic.