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vu meter circuit – Circuit Schematic
vu meter circuit
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Precision Metronome and Pitch generator – Circuit Schematic
Precision Metronome and Pitch generator
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Portable Phono Preamplifier – Circuit Schematic
Portable Phono Preamplifier
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Modular Phono Preamplifier – Circuit Schematic
Modular Phono Preamplifier
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Compact DJ Station – Circuit Schematic
Compact DJ Station
The mixer features two stereo phono inputs and two stereo line-level inputs and has one stereo mixing channel. A microphone input and a stereo main output with ...
Solid-state Fender Blackface Preamp – Circuit Schematic
Solid-state Fender Blackface Preamp
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Intercom with fader – Circuit Schematic
Intercom with fader
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Modular Audio Preamplifier – Circuit Schematic
Modular Audio Preamplifier
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Pultec EQP1A Equalizer – Circuit Schematic
Pultec EQP1A Equalizer
This is about as close as you can get to a real vintage Pultec EQP-1a. Built from the original Pulse Techniques Pultec schematic with the layout designed around...
M-S SPEAKER SYSTEM – Circuit Schematic
M-S SPEAKER SYSTEM
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Marshall JTM-45 and 62 Bluesbreaker Reissue Modifications – Circuit Schematic
Marshall JTM-45 and 62 Bluesbreaker Reissue Modifications
The Sovtek 5881s that come in these amps are cheap and sound like it. Change ALL tubes. Get a Sovtek GZ34, Valve Art or GT KT66s, and Ei Gold preamp tubes. Rebi...
Rastop guitar effects – Circuit Schematic
Rastop guitar effects
By testing many different circuits, I ended up with the simplest ( in terms of parts count and straight signal flow) design, similar to those " Heathkits", with...
Submarine Periscope Arcade Shooter – Circuit Schematic
Submarine Periscope Arcade Shooter
This is a great old periscope game. Ships pass by in the dark and your job is to hunt them down. When I plugged it in I heard a loud 60hz hum from the audio cir...
Wireless Guitar – Circuit Schematic
Wireless Guitar
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VU Level Meters STEREO – Circuit Schematic
VU Level Meters STEREO
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Robot Voice – Circuit Schematic
Robot Voice
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Tube Tune-A-Lite ID37856 – Circuit Schematic
Tube Tune-A-Lite ID37856
The following two photos show the I/V charactereristics of the main Anode/Cathode current for the Tune-a-lite 4 element neon tube used as signal strength meter ...
grundig Stereo Decoder circuit – Circuit Schematic
grundig Stereo Decoder circuit
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Music Equalizer Display Circuit – Circuit Schematic
Music Equalizer Display Circuit
The music equalizer display schematic is not a very difficult one to build. I managed to fit it all on a nice little breadboard. You will need all the parts lis...
Mini IR Theremin Circuit – Circuit Schematic
Mini IR Theremin Circuit
The IR Theremin hardware schematic is deliciously simple in that the main input and output devices do not require many connections. This is usually a mixed bles...