How do I set up a monostable 555?
Ya, i've been searching around and what I don't understand is how to make the pulse for the trigger. Its has to be less than 1/3 the supply voltage right? But how do I achieve this? THANKS
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Well, where's the trigger cominfg FROM ?
A simple resistive divider will make it happen, but you need to know what the peak of the trigger voltage is going to be.
A simple resistive divider will make it happen, but you need to know what the peak of the trigger voltage is going to be.
Feb 28, 2011. 2:29 PMjunits15 (author)
says:
the trigger is supposed to be a transistor that will be triggered by sound from a microphone. However for testing I'm using a pushbutton switch, what do you mean by the peak of the trigger voltage? Also Im beginning to think I may have burned my chip out because one time it became extremely hot, but I'm not going to rule out the fact I probably built the circuit wrong
Sounds like it might be damaged, though 555s are pretty robust beasties.
Steve
Steve
Mar 1, 2011. 2:16 PMjunits15 (author)
says:
I'm thinking the same because I've tried tons of different circuits and none of them worked, it doesnt seem to be doing anything, do you know how I could test to see if its working still?
I think, for the price, I'd just swap it out for a new one.
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