This site is the design archive for -

The GEM.  A class-A//AB audio power amplifier (25W to 200W)

A 600 ohm line driving, 12dB Gain-Buffer, audio stage.

The ACE.  A vinyl phono pre-amplifier for MM cartridges.

The 'T'-bass.  A passive Open Baffle Loudspeaker Equaliser.

The ATL-3.  A high sensitivity indoor MW Loop antenna.

The '6x6' Loop.  A 6ft x 6turn balcony/garden antenna.

A piezo ultrasonic small mammal pest deterrent.

The FS Loop.  A Ferrite Sleeve AM receiving antenna.

12th March 2011.                          Also see my other website -  www.GMweb1.net