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insonicbloom
 Post subject: 9v Low Battery Indicator
PostPosted: Mon Nov 12, 2012 5:53 am 
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Location: Macclesfield UK
http://www.paulinthelab.com/2012/11/low-battery-indicator-9v-stripboard.html

it has 3 states:
1. if the battery is good then the LED doesn't light
2. between 7.5v and 6.4v the LED flashes to warn you it's getting low
3. below 6.4v the LED stays lit

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burstatron
PostPosted: Mon Nov 12, 2012 7:55 am 
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Location: Swindon, UK
Looks good Paul, thanks for posting

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powerpopguy
PostPosted: Mon Nov 12, 2012 9:22 am 
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nice to see you here Paul and thanks, I've wanted to see a circuit like this for a while, and the flashing state is really cool. :D

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insonicbloom
PostPosted: Mon Nov 12, 2012 9:35 am 
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powerpopguy wrote:
nice to see you here Paul and thanks, I've wanted to see a circuit like this for a while, and the flashing state is really cool. :D


well just having it go on or off is boring and I probably wouldn't notice it so flashing seemed like a good idea

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