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 Post subject: Two-Transistor version of Daftmike's low-battery Indicator
PostPosted: Fri Jun 25, 2010 10:39 pm 
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Joined: Mon Mar 05, 2007 7:20 pm
Posts: 1382
Location: Sunny California
I designed this circuit based on Daftmike's low-battery indicator circuit. If you're thinking of using his low-battery indicator and don't mind giving up the green LED in exchange for some parts savings, use this one.

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All the info is right there. This circuit uses only two transistors as opposed to five. This saves you some parts and space as well as a bit of battery life. I took out the green LED. So, there is no indicator when the battery is OK but the LED turns on once it goes below the set voltage.

Here is his original thread:
http://forums.modretro.com/viewtopic.php?f=7&t=255

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Last edited by Mario on Sun Jul 04, 2010 10:23 am, edited 2 times in total.

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 Post subject: Re: Two-Transistor version of Daftmike's low-battery Indicator
PostPosted: Fri Jun 25, 2010 11:38 pm 
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Posts: 338
I think this is great for anyone who had trouble understanding the original (ie: me) Thanks for this!


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 Post subject: Re: Two-Transistor version of Daftmike's low-battery Indicator
PostPosted: Sat Jul 03, 2010 12:01 pm 
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Joined: Mon Mar 05, 2007 7:20 pm
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Location: Sunny California
No problem. :)

Updated first post with better schematic.

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