Two-Transistor version of Daftmike's low-battery Indicator

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Mario
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Location: Sunny California

Two-Transistor version of Daftmike's low-battery Indicator

Post by Mario » Fri Jun 25, 2010 10:39 pm

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" onclick="window.open(this.href);return false;
Last edited by Mario on Sun Jul 04, 2010 10:23 am, edited 2 times in total.
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Diminuendo
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Re: Two-Transistor version of Daftmike's low-battery Indicator

Post by Diminuendo » Fri Jun 25, 2010 11:38 pm

I think this is great for anyone who had trouble understanding the original (ie: me) Thanks for this!

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Mario
Posts: 1383
Joined: Mon Mar 05, 2007 7:20 pm
Location: Sunny California

Re: Two-Transistor version of Daftmike's low-battery Indicator

Post by Mario » Sat Jul 03, 2010 12:01 pm

No problem. :)

Updated first post with better schematic.
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