Home Blog  





26 Oct 2011

enide.net writes:

This is a bar-graph voltmeter for a 12V battery based on the well known LM3914 IC.

I have a 12V car battery attached to a regular 500VA UPS and, because the UPS is old and doesn’t have any management options, this is how I measure the amount of charge in the battery.

It was developed mainly because it gives a nice look to the UPS, with its red, yellow and green leds. It is also easier to read than conventional digital or analog voltmeters.

LM3914 Battery Monitor - [Link]

Leave a Reply

You must be logged in to post a comment.



 
 
 

 

 

 

Search Site | Advertising | Contact Us
Elektrotekno.com | Free Schematics Search Engine | Electronic Kits | Electronics Projects