Discrete tube phaser

[harry]

Hi all:

I say NO to the neon lamps. Its too hard to get accurate intensity out of
them...
they are more suited to on-off applications.

I'm aware of the Fender Amp "vibrato" application... but that is more
on-off with
response from the photocell.

I'd do incandescents if you MUST make a period piece...

(which I wouldn't...   ;^)

H^) harry

Peter Blackett wrote:

> Hi,
> just that if you wanted to use 1950's technology you could  I think
> [  I'm not a design engineer ]
> use  Tubes , LDR's and neon bulbs to make a phaser .
> you would have to put the neon bulbs and LDR's in a small case to stop
> external light causing problems .
> I was thinking of doing something similar a while ago , but got
> distracted .
> I know the Magnavox amp circuits are very cleaver how they work [ I
> still don't totally understand them ].
> I think the Univibe circuit is also interesting as the capacitor values
> aren't the same in each stage , most other phaser circuits I think use
> similar stages .
> regards Peter