Battery Charge Indicator

293

03:10:23

Measures the voltage across a battery and lights up a specific LED corresponding to the charge of the battery. 

published 6 years ago

Sheen140

6 years ago

Additionally, one can continue to add LEDs by simply adding two transistors, a few resistors and an LED (I just ran out of room after 5 LEDS)

Sheen140

6 years ago

The sawtooth wave on the left represents a charging/discharging battery. Can be simply modified to work with a wide range of battery voltages.

badassfromaus

6 years ago

Not bad I did one similar. http://everycircuit.com/circuit/5656096333889536

Sheen140

6 years ago

@badassfromaus Damn yours is snappy, and you've got a bunch of protection features mine doesn't have too! Have you tried to build it or were you just messing around on the app like me?

badassfromaus

6 years ago

I have built it.

hurz

6 years ago

@badassfromaus, no please you are joking, you might have built it but then you have noticed all this smoke around 3.37A at 13.xV and NO resistor for current limiting. zener 10V plus one Vbe 10.7V but driven with 13V you can imagin how much current a single transistor can draw. Please dont tell us its working irl.

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