555 monostable

mgeno216 · Jun 9, 2010

I have a question regarding 555 in a monostable set up. I m using this schematic and calculator:
Monostable 555 Timeout Calculator

Is the "trigger" just to point where when current is applied, the timer starts?

Mike

ericgibbs · Jun 9, 2010

mgeno216 said:
I have a question regarding 555 in a monostable set up. I m using this schematic and calculator:
Monostable 555 Timeout Calculator

Is the "trigger" just to point where when current is applied, the timer starts?

Mike

hi Mike,
Usually the trigger pin is connected via a capacitor and pull up resistor.

EDIT:
Look here.
https://www.electro-tech-online.com/blogs/ericgibbs/125-simple-7555-cmos-timer-calculator-v1-2.html

Like this example.

MikeMl · Jun 9, 2010

Look at this posting.

mgeno216 · Jun 9, 2010

Thanks to both of you. I had a feeling you could wire it like ericgibbs posted, but i needed some ressurance.

Thanks,
Mike

555 monostable

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