voltage detection module

Thread Starter

solar77

Joined Aug 27, 2011
4
Is there a module that turns the LED one input voltage drops below certain value? even better if this value can be defined in someway.
the range of detection is 0-12V and accuracy should be 0.1V.
 

JingleJoe

Joined Jul 23, 2011
185
the range of detection is 0-12V and accuracy should be 0.1V.
What do you mean? That you want your LED to turn on between 0 and 12 volts? Because as far as I know the component for that is called a switch :p

Op amp voltage crossing detector, look that up, I think it's what you want.
 

Thread Starter

solar77

Joined Aug 27, 2011
4
well, I am looking for a battery level indicator. once the voltage drops below a value, the indicator lights a LED. Hope that make more sense than my previous description.
 

Jaguarjoe

Joined Apr 7, 2010
767
If its just voltage you want, look through the ebooks at the top of this website and search for "comparator". You will be able to exactly set the trip point you desire.
 
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