View single post by Itsu | |||||||||||||
Posted: Aug 17th, 2014 01:35 PM |
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Itsu
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EVPfan, 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: https://www.youtube.com/watch?v=tlehw5vLHeE&feature=youtu.be Any luck yourselve? Regards itsu Last edited on Aug 17th, 2014 01:36 PM by Itsu |
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