View single post by Itsu
 Posted: Aug 17th, 2014 01:35 PM
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Joined: Dec 6th, 2013
Location: Netherlands
Posts: 11

nice, i build that little circuit on a breadboard using the multi-turn pot like suggested by Jan.

Powered with a 12V battery i can hear some noises like some control or piloting signals via the grid??
When touching the germanium diode or the MOSFET drain i hear a local Dutch radio station, so shielding the whole circuit is a must.
Turning the pot does not change much in the audio.
I will try to put the circuit in a shielded box and operate it far away from the grid as it picks up lots of transients.

Video here:

Any luck yourselve?

Regards itsu

Last edited on Aug 17th, 2014 01:36 PM by Itsu