[sdiy] which transformers to use in a passive ring mod circuit?

[Tim Ressel]

Todd,

Check out the tube ring mod on my web site:

http://home.attbi.com/~t.ressel/TUBERINGMOD.pdf

The transformers are Mouser 42TL218. The circuit
didn't work well with semiconductor diodes but works
great with tubes. I suspect impedance problems. I
can't find any reference to the transformer mentioned
in your circuit. But if you can find the specs for it,
you might find an equivelant at Mouser.

Look closly at the circuit: It doesn't form a diode
bridge, it forms a diode ring. It's a bit different.
Basically pairs of diodes are biased on while thier
opposite pair are turned off. This reverses the
polarity of the signal that gets passed thru.

--Tim

--- Todd Goodenow <toddgoodenow at yahoo.com> wrote:
> http://synthfool.com/ringmod.html
> In this circuit it uses two stancor a-4713 driver
> transformers and then four diodes to create a
> passive
> ring mod. What would be a purchasable transformer I
> could use in its place? Also aren't the diode just
> doing full bridge rectification there?
> 
> todd
> 
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