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Need A Circuit To trigger An Event Above 2 Volts

bigshop

Jun 24, 2013
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I need a way to monitor a DC circuit so that once it reaches 2 volts I can turn on another circuit, then once it falls below 2 volts turn off that circuit
Anybody have an example
 

Harald Kapp

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Nov 17, 2011
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Google Schmitt-trigger - you will find lots of circuits.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Jan 21, 2010
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Actually what you describe would be accomplished with a comparator.

However, a Schmitt trigger is a better option because it will not switch rapidly back and forth when the signal is at or very close to 2V.

For your case a comparator with a small amount of hysteresis (there's some words to Google with) would form a schmitt trigger that may solve your problem.
 
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