Low-voltage 12ax7/6n3p Tube Preamp test
1:30
YouTubeVNElectronics
Low-voltage 12ax7/6n3p Tube Preamp test
Test run of the 12ax7/6N3P (6Н3П-ЕВ) tube preamplifier circuit running from 12V power supply. The heater circuit is based on LM317 regulator IC and uses R1 = 180Ohm and R2 = 750Ohm as a feedback voltage divider. The original circuit is taken from this video: https://www.youtube.com/watch?v=BTrUJC_vpyc #12ax7 #6n3p #preamp #tube
4.2K viewsOct 16, 2021
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