Circuit Lake » Amplifier

Digital Subwoofer Amplifier with Feedback

admin — Sat, 09 Jan 2010 22:07:13 +0000

The project used interesting approach for reducing speaker distortion and increasing bass response. A dual coil speaker driver is used but only one of the coils is connected to the power amplifier – the other is used for electromotive feedback. This method is not new, but is difficult to implement in pure analogue world [...]

Stereo Super Ear Amplifier

admin — Wed, 04 Feb 2009 00:31:25 +0000

The Super Ear is an ultra high gain stereo audio amplifier! And when we say high gain, we mean it! It boosts audio 50 times and you can listen to it in stereo besides! Miniature high sensitivity microphones are placed at 45 degree angles to give you maximum separation. This little kit also includes [...]

Class A Mosfet Headphone Amplifier

admin — Mon, 24 Nov 2008 11:16:38 +0000

This is a simple and low cost desktop headphone amplifier for the office. 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 [...]