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some help with LM3914

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some help with LM3914

Postby david1234 » Wed Nov 27, 2013 11:01 am

Hello
I want to use the LM3914 in order to do a battery tester
the batter is good for me from 12-10V ,
I have read the datasheet - and didn't understand how I calculate the resistor

I want to connect only 5 LEDs so very led will show me a down by 0.5V.

can you help\guide me?

maybe show me the equation of it?

Thanks ,
david1234
 
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Re: some help with LM3914

Postby colin55 » Sat Feb 22, 2014 11:41 pm

Buy a 12v digital meter with 4 digit display on eBay for $5.00
colin55
 
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Joined: Sun Oct 27, 2013 8:05 am
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