[sdiy] various

[harrybissell]

ha ha ha you silly man...

I have LOTS of COSMOS... even "A" series COSMOS.
I use it all the time, and the COSMOS data booke were the
best of their day (or any day)...

4000 series RULES !!!

One day (when you achieve satori) you will leave your tubes
behind and become one with some of my (NOS) COSMOS
:^P

H^) harry  (I'll have what the gentleman from METASONIX is having :^)

metasonix wrote:

> At 12:16 PM 6/27/03 -0700, you wrote:
> >So, its been in the 90s here in the lovely temperate SF Bay Area
>
> It's 105 degrees up here at Clear Lake....
> plus vast terrifying clouds of mosquitoes at night....
> Don't move here!! Keep Lakeport empty!
> Stay in the bay area! (Die in the smog! haha!)
>
> >What in the heck is COSMOS?
>
> Old RCA brandname for their CMOS line. Of no real importance
> at this late date, as I don't think anyone uses it anymore.
>
> >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?
>
> I know people who can find out the spec, if you like....
>
> They are probably just 600-600 ohm coupling transformers,
> 1:1 ratio, as those were commonly used with solid-state diodes.
>
> If you prefer driving a higher impedance, you can try
> 10k:600 ohm transformers instead (Mouser 42TL019), with
> the 600-ohm windings going to the diodes.
>
> Tim is using 10k-10k transformers, because the 6AL5 tube
> diodes have higher forward impedances.