[sdiy] Passive Ring Modulator

[ian]

Hi Steve,
I have a boxful of ringmods much like this sitting on my desk right now! I
haven't had a chance to try them out yet, but other people who have tried
them say they sound great. The design I have was given to me by a
colleague, and it comes from the Amateur Radio Relay League handbook. It
differs slightly from the one on sonicstate, as it has two diode rings,
which is supposed to provide better carrier rejection than the single
diode ring design. As for the transformers, the ringmods I have use one
from Mouser, marked TL028 down one side and 0109S down the other.
Ian


On Fri, 12 Jul 2002, Steve Begin wrote:

> Hi, I'm new to the list, not new to analog (am I gonna get in trouble if I
> spell it like that?)
>  gear, but fairly inexperienced when it comes to circuitry.
>
> I've got a question, has anybody had any experience with a passive ring
> modulator design like this one?
> http://www.sonicstate.com/synthfool/ringmod.html
>
> I'm interested in it since it looks very easy to make and cheap and if it
> doesn't work as well as other designs it doesn't bother me that much.
> However,  I guess the stancor a-4713 driver transformers are no longer in
> production and I can't seem to find anything information on them at all, let
> alone a reference to a part I could use as a substitute.
> I'd really appreciate it if somebody could give me any direction at all
> here.
>
> The other thing I was wondering about (and I'm sure it's probably painfully
> obvious to a lot of you) was half or full normalled patch bays.  When you
> split a signal doesn't it affect the impedance or something along those
> lines?  I thought it would be a bad thing to do but I haven't seen anybody
> mention any problems with that.
> How about combining signals without a mixer?  I'm almost positive you get
> problems doing that.
>
> Thanks!
>
> > Steve Begin
> >
> >
> >
>