Pseudo-ringmod idea aka the dingdongulator

Stompboxes circuits published in magazines, books or on DIY electronics websites.
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eddododo
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Joined: 07 Jan 2013, 04:14

Post by eddododo »

I hope this is the right place to post... I lurk here and at the 'other forum' alot, but do not post much, especially here (for no particular reason).
This is basically a copy of a post that died 'over there'; i decided to start where i am NOW in the project, and hopefully you guys can help me not be so dumb at this...

OK so here is my rough schematic of what I am thinking..
I am VERY young at this, so be kind :)
Some components are known/obvious, some are TBD as I get further and further from knowing nothing about what I am doing.

Image

The white mosfet stage outputs a 0o and a 180o output

The blue chunk is an astable square wave generator;
The Purple chunk around it is a crude attempt at an envelope-controlled gate for said square wave

The green stages are switched 'on' by the squarewave output. Note they are a positive AND a negative channel

The Yellow switches are shown in 'fringer' position.
The 'fringer' is my accidental reinvention of the famed Dan armstrong's green ringer. I was drawing mosfet stuff and thought about a geofex article showing positive and negative phase outputs-
later on i stumbled into the green ringer circuit, and was tickled... i definitely intend to borrow that diode on-bias trick.. Smiley
Remember that square wave? remember that gating that was done? Well the waveform is mixed in at the front of the fringer circuit- If i am lucky, it will produce those AWESOME pseudo-ringy harmonics that so many rectified octavers get from polyphony.


The Red switch is to lower gain in the 'fringer' stage to try to get a 'Jawari' type effect



I CLEARLY owe alot to:
Jack Orman's http://www.muzique.com/schem/mosfet.htm
R.G's GEOFEX, specifically his MOSFET ARTICLES

I fully intend to figure this out and not copy and paste values and exact topologies from these guru's- consider this a conceptual diagram



Thanks for any help, suggestions, or errors in concept...

I hope to keep this updated with my findings, frustrations, failures and success

-Edward




p.s. note the output symbols from the oscillator in the top right- those are the same symbols in the middle of the mosfet stages

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