[sdiy] asm1 lfo and power supply

[Nils Pipenbrinck]

Hi There.

Once again an asm-1 question. I have trouble getting the lfo to work. (shame
on me, it's such a simple circuit). Is this circuit sensitive on a "not
really good" power supply?

To be honest I'm still working with a very bad powersupply built around a
7815 and 7915. Worse is, that I have -17V instead of -15 (don't ask me why -
only the 7915 knows...).

I've read a lot of times, that a good power supply _is_ important. Mine is a
pice of junk. It has ripple, it does the wrong power, it's noisy, and each
time I'm, working with it remember that I'm just a mortal (you can touch the
wires of the mains). But nevertheless - it did it's job for over a 5 years
now. It supplied my guitar preamp. It supplied all my experimental
diy-circuits, and it survived uncounted short circuits.

Back to the LFO:

I checked my pcb a couple of times, changed opamps, measured here and there,
and everything looks fine. Could it really be my sucking power supply?,`Even
if it's a pice of junk I never had serious problems with it.

Thanks in advance,

	Nils Pipenbrinck