Re: looking for a 555 timer circuit

On 30 Jan 2006 14:16:34 -0800, "Wayne" <waynelewis@xxxxxxxxx> wrote:

>I've made the modifications except for the C2 in the revision C (have
>to go get one). I still have not managed to find what I have wrong at
>this point. Right now, U3Q1 seems to be staying high (2.2V) and I have
>not observed U3Q2 or U3Q3 switching. U1-7 does exhibit a period of 4
>seconds as you mentioned, and U1-6 does toggle.

---
If U3-1 goes low when you hit the PAUSE switch, U3-2, 7, and 10
should all go low (close to 0V). Does that happen?

--
John Fields
Professional Circuit Designer
.

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