Class-A Mosfet Headphone Amplifier


Posted on Feb 6, 2014

Not thrilled with how a computer soundcard drove my 32ohm headphones so I decided to build myself class-A mosfet headphone amplifier. As with most of my projects, the goal was to keep it simple, keep cost down and try use some salvaged parts. This is a simple do-it-yourself (DIY) headphone amplifier project that is fashioned primarily after the Class A MOSFET Headphone Driver project by Greg Szekeres and to some extent Mark`s DIY Class A 2SK1058 MOSFET Amplifier Project. The amplifier concept is simple and follows a typical single-ended class A circuit utilizing an active constant current source (CCS) in place of a passive resistor. A CCS doubles the efficiency of the circuit over that where a passive load resistor is used, bringing it to a maximum of 25%


Class-A Mosfet Headphone Amplifier
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

G1216B1N000 dot graphics display
Automatic Inverter Supply and Mains Supply Changeover Relay
Very high current power supply
Big vacuum tube tesla coil with GU-81M
op amp summer as a digital to analog converter dac
Comes with rechargeable lead-acid battery LED emergency light circuit diagram
Low drift integrator



Top