Circuit Lake

Electronic Project and Circuit Collection


Battery-Powered Audio Amplifier

May 21, 2009 By: admin Category: Amplifier, Audio, Project No Comments →

Ruby is an “enhanced” version battery-powered amplifier. The project use LM386 – Low Voltage Audio Power Amplifier as main part. Ruby has many shades of sparkly clean all the way up to a great, natural overdrive. The input buffer helps to retain treble detail going into the 386 chip. As you increase the Volume, you […]

Class A Mosfet Headphone Amplifier

November 24, 2008 By: admin Category: Amplifier, Analog, Audio, Project No Comments →

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 is […]