Re: Circuit Topology Question

From: "Elmo' 7#9" <elmo_macdonald@xxxxxxxxxxxxxxxxx>
Date: Tue, 31 Jan 2006 16:57:22 GMT

<snip, for brevity>

> Looks like a kind of vibrato/tremelo circuit to me. The relais P1 and its
> switch P1 is an electromechanical oscillator the frequency is controlled
by
> C16 and R26. The light bulb switches on and of changing the LDR resistance
> which in turn modulatied the signal strength on the grid of the fourth
> triode if switch K2 is closed. If the light level on the LDR remains small
> the LDR will change resistance quite slow and will not reduce the output
> volume to zero.

So there's a relay,
clicking away at the same speed as the tremolo
(and some folk moan about bleed from tremolo oscillators!).

Thanks for all the replies.

Elmo' 7#9

.

References:
- Circuit Topology Question
  - From: Elmo' 7#9
- Re: Circuit Topology Question
  - From: Ian Iveson
- Re: Circuit Topology Question
  - From: Corne Janssen

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