723

[The Dark force of dance]

Y-ellow y'all.
        I wonder if anyone could point me to some 723 regulator circuits. Ok
so I decided. Whilst I'm waiting for a solution to making some mixer boards,
I'd get to and build another bench power supply. Since ever damn one of my
original supplies has blown up for one reason or another.

So I started building them up from the circuses in the NSC data book.
Firstly to find that the negative regulator has no current limiting.
Secondly, that I'd used a 10 pin TO5 can version which has no "Vz" pin on it
and can't be used as a negative regulator. Dool! So I went out on the web
and did a bit of a search and didn't uncover much. 

I basically want a split supply. Each half, positive and negative to have
independent voltage adjustment. Ideally they'd each have an adjustment for
current sensing. So that I could set the maximum current before they tripped
off.

Which brings me to the next problem. The current limiting/sensing resistor
is so damn low in value that I have trouble comprehending the value pot I'd
have to use. Perhaps I could shunt it with a pot or something. But then I
realized that the current limiting is a function of output voltage. Is there
anyway of adjusting the voltage and current limit independently?

And of course then doing it for a negative going regulator.

Damn this would be so much easier if I had two separate transformers instead
of a centre tapped one. :(

So if anyone knows where I might find what I'm looking for "OUT THERE"
somewhere. I would most appreciate it.

Now I'm off to kick myself a bit.

Thanks in advance.

Be absolutely Icebox.
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