found a couple of dist circuits i havent seen before

[b_rogers]

anyone seen these before?
http://www.redcircuits.com/Page91.htm

http://www.redcircuits.com/Page94.htm

the last one looks cool

enjoy!

Brent

[Mark Hammer]

The second one is similar to a Sparkle Drive in that it provides for mixing two distortion signals and a clean signal.  The "square" is an unfiltered fuzz whose output is tapped at P3.  The signal from the fuzz stage also goes through a 1k/.22uf lowpass filter (hmm, sound familiar?), that takes out a big chunk of the high end from the fuzz.  This derived signal has a tiny bit of boost added to compensate for the trbele loss and is fed to the mixer stage at the output (IC1D) via P4.  Put bluntly, the "square" is not square, and the "triangle" isn't triangle.  They are just two versions of the same signal for the purposes of blending and tonal variation.

[petemoore]

Nope, havent seen those.

[petemoore]

  The first one looks interesting simply because it's stated high gain and the waveform was attractive to the viewer !
  The right hand transistor appears as an emitter follower, so the gain must be coming from the other two Jfets, perhaps a deft eye can help enlighten how the purported high gain is had here.
  Gotta love those softly Squarrounded waves !!!
 

[Jered]

  Someone posted a veroboard layout for the first one a while back. I believe it was called "2N3819 Tube OD" but there is a problem with the layout. On the second copper strip, labeled B, both power 9V+, and ground are connected. If you cut this trace, the circuit will then work but its nothing that great. J. Ormans mini booster sounds much more tube like to my ears.
  Jered

[R.G.]

The first circuit is a constant current source loaded JFET with a voltage follower so you get to keep some of the gain. See "Foolin' with FETs" at GEO, 8/27/00. I used a P-channel JFET for a constant current diode for illustration, but n-channels work just as well.