On Mon, 29 Nov 2004 16:24:29 +0000 (GMT), Jim Lesurf
wrote:

Yes. In fact IIRC some of our older sinewave oscillators in the teaching
labs use a small incandescent lamp to stabilise the gain of the oscillator.
(That makes me also recall that I think the old 'Sound Technology THD
analyser I used to use also did something similar.)

Slainte,

Jim

I have a home-built Wien bridge oscillator stabilized by a thermistor
- a tiny bead sealed in a glass tube. It is very good above a hundred
Hz, but its attempts to stabilize the oscillator down around 10Hz are
really pretty pathetic.

d

Pearce Consulting
http://www.pearce.uk.com