Re: My NE-2 Relaxation Oscillator is Too Relaxed ???

On Wed, 02 Jul 2008 13:49:49 -0700, jalbers@[EMAIL PROTECTED]
 wrote:

> I am experimenting with a relaxation oscillator circuit consisting of a
> NE-2 bulb wired parallel to a capacitor and this pair is wired in series
> with a resistor and connected across a 150 V DC power source (a bunch of
> DC wallwarts connected in series).  The resistor is variable 0-1 Meg
Ohm,
> the capacitor is a 1uF electrolytic rated at 160V.  I don't have any
> capacitors on hand with a higher working voltage.

I also vote "smaller cap", but I'd add to this: There should be a 220K or
so (I wouldn't go below about 180K) in series with the pot so that when
you turn the pot down, you don't burn out the bulb. I guess you'd size the
R so that with your supply you'd want to limit the neon current to the
~1-2 mA range.

Have Fun!
Rich