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Posts tagged 12AU7

PCB Booster tube and light flow control valves using 12AU7

PCB Booster tube and light flow control valves using 12AU7 A 12AU7-based booster and light overdrive running at 9 volts.  A very fun little circuit that has a minimal parts count and actually generates a good amount of boost and some overdrive. You can even run this one of a 9 volt battery if you […]

20W 18V Audio Amplifier Circuit using uPC1230H

20W 18 V Audio Amplifier Circuit using uPC1230H

Audio Mixer circuit diagram Using FET 2N3819

Audio Mixer circuit diagram Using FET 2N3819 This simple circuit mixes two or more channels into one channel  stereo into mono. Parts R1, R3 10K Pot R2, R4 100K 1/4 W R5 6.8K 1/4 W C1, C2, C3 0.1uF Q1 2N3819 FET MISC Wire, Shielded (Metal) Case, telephone Or Other Plug For Output

DC Power Supply Schematic

AC Adaptor / power supply AC Adaptor / power supply using STRS6707, TLP621, TLP721, 2SC3852

Audio Amplifier

Audio Amplifier circuit using IC LA4505 Audio Amplifier circuit using IC LA4505

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