Re: astable 555

On Jun 13, 4:33 pm, "petrus bitbyter"
<pieterkraltlaatdit...@xxxxxxxxxxxxxxxxx> wrote:
<ejle...@xxxxxxxxxxxxxxxx> schreef in berichtnews:1181763994.494819.218280@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx





On Jun 13, 2:08 pm, John Fields <jfie...@xxxxxxxxxxxxxxxxxxxxx> wrote:
On Wed, 13 Jun 2007 09:53:34 -0700, ejle...@xxxxxxxxxxxxxxxx wrote:
I am trying to trigger an astable 555 oscillator using another 555 in
the monostable mode. Everything I see says that the astable 555 is
free-running. Is there a way to trigger it using the monostable?

--- _____
Connect the output of the monostable to the RESET input of the
astable. The astable will run while the monostable's output is
high.

--
JF

I have a board that inputs 8 pulses to a counter and after the 8th
count it is to trigger a one-shot 555 which will start a delay for
about a min. Then the one shot needs to trigger the oscillator after
the delay.

Your description is fully unclear (to me).
What do you mean by "trigger the oscillator"?
Is the oscillator is supposed to run until the monostable starts and run
again when the monostable has timed out? If not, what will stop the
oscillator and when?

petrus bitbyter- Hide quoted text -

- Show quoted text -

The monostable is acting as a delay of approximately one minute. The
astable should be off until the delay is up. Then I want the astable
to start oscillating.

.

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