[sdiy] passive ring modulator

[Czech Martin]

Another catch is the transformer spec.
Some transformers -well let say it this way-
get very low impedance at not too low
frequencies (primary inductance low).
This can overload thr driving amp,
or the core. => distortion.
For a real ring mod the transformers
should go well below 50-40Hz.

m.c.

> -----Original Message-----
> From: Nrthrnsol at aol.com [mailto:Nrthrnsol at aol.com]
> Sent: Samstag, 30. August 2003 00:30
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] passive ring modulator
> 
> 
> hey
> i am new to the world of diy synth but we all gotta start 
> somewhere right
> i was wondering if you all could help me with a little 
> problem i been having trying to fing some parts for a passive 
> ring modulator
> 
> the parts list calls for these:
> Two (2) Stancor A-4713 driver transformer or equivalent
> Four (4) diodes GE45A or equivalent
> Three (3) suitable jacks
> One (1) mounting box
> 
> now i have already found that
> i can use 
> MOUSER TM018 transformers for the stancor A-4713 driver transformers
> and the jacks and housing is easy 
> but i am having trouble finding the 
> Four (4) diodes GE45A or equivalents
> 
> do you guys know(of course you do)of what other equivalents i 
> could use for these...i believe they are supposed to be 
> germanium diode
> 
> please help!! 
> 
> thanks guys
>