ASM-1 powersupply help

[Harry Bissell]

OTOH : all the PowerOne linear supplies ARE 723 based, and in the surplus
market can be had for as little as $12.95 plus shipping.  (all electronics... see
yesterday's
posts... if you can't find them I'll look it up...)

You probably can't build one for that cheap... and they are a design right out of
the
datasheet, so you would not miss learning much if you just read the datasheet...

Of course if you are on Apollo 11 on the way back from the moon and "Houston...
we have a problem here...." then doing it the hard way is the only way.

The moral... don't re-invent the wheel.  Save that time for a nice VCO, or
Filter, that
you CANNOT buy for $12.95 (plus shipping...)

H^)   harry

Magnus Danielson wrote:

> From: e <edgarfov at zahav.net.il>
> Subject: ASM-1 powersupply help
> Date: Sun, 24 Sep 2000 00:54:42 +0200
>
> >
> > Well
> > after many debating and eliminations about the asm drifting in certain
> > conditions
> > i have concluded that i need to build a better power supply/regulator
> > then the one im using right now based on 7815 7915 regs
> > any suggestion / schematics / help
> > will be a great help.
> > cause with my present knoledge ,hard to solve the case..
>
> I think that you would like to use a 723 base PSU like the one used in the
> Elektor Formant for instance:
>
> http://omega.tellus.vallentuna.se/anders/synthar.html
>
> (Anders site is at http://omega.tellus.vallentuna.se/anders/)
>
> You will find the powersupply in Chapter 3. It is very simple and should not
> have you face any major trouble. It's capable of delivering about 800 mA and
> a typical ASM-1 is eating about 100 mA, so for a single ASM-1 you should have
> a good margin and the 2N3055s will not be ultra-hot. Sounds like a treat.
> Just put the 2N3055s on sufficiently large heatsinks.
>
> Hmm... just reminded me that I have one of those PSUs to hook up to one of my
> ASM-1s...
>
> Cheers,
> Magnus