A couple of years ago I thought I’d spend my life savings on a 60’s SHINEI Univibe phasor. I managed to track one down on eBay and immediately fell for it! The unit was dead right out of the box …
Vintage SHINEI UNIVIBE – restoration and enhancement Read more »
JC Maillet, posted Oct22/2020 … A quick look at any good circuit theory book and you generally find jFET device equations written in terms of the process-dependent constants Vgs(off) and Idss. Together,Vgs(off) and Idss pin down the CHARACTERISTIC relationships which …
jFET Transistors : Getting to know Vgs(off) and Idss Read more »
pushing sleep late one night, I randomly started drawing out a sine wave and reflected on a visual representation of the usual frequency doubling transform known as “full-wave rectification” … I bemusedly wondered if there could be another way of …
Dedicated to the memory of Juergen Haible …
While searching for a non-code based (AVR) way of doing 3-phase speed control on the WAYNE Choratone concept I found a way to discretizing the phase rotation so that an easier way of balancing the Lattice outputs becomes possible. Instead …
WAYNE Choratone // LATTICE BALANCING update 2020 Read more »
viva Analog “1176x-tended” Limiting Amplifier my take on the celebrated giant … CONTROLS: PRE // Input scaling (affects RATIO and THRESHOLD range) POST // Output (overall) gain THRS // minimum Threshold (high sensitivity) at full rotation RATE // maximum Ratio …
Bagging a new Phasor circuit … To recap, all monaural time-based effects – which includes Delays, Phasors, Chorus circuits and Flangers – all tend to follow a similar overall structure comprising of three main parts: (i) a signal path that …
A list of past designs that were useful to me in study and experiment … 1978 CRAIG ANDERTON “INFINITY PLUS” (POSTED 1998) FLOATING GAIN http://www.lynx.net/~jc/pedalsInfinity.html 1978 CRAIG ANDERTON “RING MODULATOR” (POSTED 1997) VARIOUS ADDED FEATURES http://www.lynx.net/~jc/pedalsBalancedMod.html 1995 SHIN-EI “UNIVIBE” (POSTED …
Introducing: The ATAK-60 “Analogue Tube Amp Killer” // 60 watt version A culmination of the work I started in 1994, with a first official publication of my 12ax7 modeling and simulation plots in 1998. Maillet-GlassAudio98 PDF These plots provide an …
auto-bias circuitry ?! … hmmm, is that reliably possible …?! I’m always curious to see what kind of approach these rocket engineers will take to complicate the basic tube amp design … as if the Traynor auto-bias fiasco wasn’t enough …
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