Headphone Amplifier Electronic Circuit Diagram. For example r101 q101 c101 etc. Headphone amplifier circuit using 3 transistors diy syed saad hasan 1 921 views 9 months ago a headphone amplifier is a relatively low power amplifier that boosts the low voltage audio signal from a source device be it a turntable laptop or a smartphone to a sufficient level such that it converts or transduces into sound waves by the speakers inside your headphones.

High impedance headphones can be connected. Syed saad hasan 1 800 views 9 months ago. The maximum output power that can be obtained with this circuit is around 80 mwatts.

First the audio signal comes to the input through j1 and c1.

Apart from the obvious usage as a headphone amplifier the circuit can be used for a range of applications where a wide bandwidth low power amplifier is needed. Syed saad hasan 1 800 views 9 months ago. High power headphone amplifier using bd139 40 firstly i d like to stress that the intended use of this circuit is only one of many possible applications. Apart from the obvious usage as a headphone amplifier the circuit can be used for a range of applications where a wide bandwidth low power amplifier is needed.