ADC or analog to LED display

250

02:08:30

Uses op amps in a comparator configuration to light up an increasing number of LEDs as the input voltage is turned up (represented by the potentiometer).

published 10 years ago

2ctiby

10 years ago

Nice clear good working circuit. An interesting point to note here.....the total circuit current might be thought to be the 4mA seen at the source, but the 3 LEDs are each using more.....so their current seems to be automatically drawn from the op amps in EC. So we always need to be aware of that when judging total current usage in EC.

mydigital55

10 years ago

fm mic

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