View single post by Itsu | |||||||||||||
Posted: Aug 19th, 2014 02:10 PM |
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Itsu
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EVPfan, trying to keep up with you, but i am still at this first opamp circuit using a TL084 instead, powered from 2 12V batteries (so +12v and -12V). Nice hissing sound from the earplug / MOSFET amplifier, but nothing else. There is 15V directly across the diode 1n34 (25V total across the 2 resistors (1M each) and the diode). At least the radio stations are gone (also the pilot/control like signal), so there could be no mistake there. Short video here: https://www.youtube.com/watch?v=KBxut4Kts5Y&feature=youtu.be Regards Itsu Attached Image (viewed 3156 times):
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