Author Topic: 555 timer still ticking  (Read 16536 times)

big bustle

Re: 555 timer still ticking
« Reply #20 on: August 20, 2009, 10:12:21 AM »
Have you tried the '7555' low current timers?

Same pin-out as a '555', but I've found them to be quieter.

Shown here as 'ICM7555IPA'... 

http://www.rapidonline.com/Electronic-Components/Integrated-Circuits/Timers-Signal-Gens./555-Timer-ICs/67451

Very cheap too!

thanks for that link. those prices even beat ebay.

George Giblet

  • Guest
Re: 555 timer still ticking
« Reply #21 on: August 20, 2009, 10:14:06 AM »
As an experiment, power the whole 555 and LED circuit from another power source, if it still ticks then either the LED wires or some of the 55 wiring is too close to sensitive audio lines.   if it doesn't tick then you know is power related.

Kamryn

Re: 555 timer still ticking
« Reply #22 on: February 04, 2011, 06:26:57 AM »
Have you try to search in google maybe you can found some info that related in your topic. But I have here some info might related in your problem. Hope this can help in maybe a little idea, xxx.555-timer-circuits.com.
My Sports Timer

deadastronaut

Re: 555 timer still ticking
« Reply #23 on: February 04, 2011, 06:50:09 AM »
very old topic dude!... :icon_wink:

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