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Author Topic: Using LED to gauge voltage  (Read 1357 times)

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(unknown)

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Using LED to gauge voltage
« on: September 10, 2004, 02:40:10 PM »
I have a device that uses 3VDC and I want to install a LED that will go out at 2.4V.

so I know it's time to change batteries?
« Last Edit: September 10, 2004, 02:40:10 PM by (unknown) »
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richhagen

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Re: Using LED to gauge voltage
« Reply #1 on: September 11, 2004, 03:49:46 PM »
This circuit flashes an led when the voltage is under 2.4V.  Might serve your needs without any modifications.

http://www.discovercircuits.com/B/batt-mon.htm


Just Having fun,

Rich Hagen

« Last Edit: September 11, 2004, 03:49:46 PM by (unknown) »
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(unknown)

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Re: Using LED to gauge voltage
« Reply #2 on: September 13, 2004, 06:30:34 AM »
Rich,


Thankyou very much.  That looks like the solution.

« Last Edit: September 13, 2004, 06:30:34 AM by (unknown) »
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