2-color LED

107

01:02:36

Control 2color 2lead LED with GPIO

published 8 years ago

CarlosHerrera81

8 years ago

Hi, I understand the current is originating at the inverted NAND gates, but does the NAND gates function as ground for current as well?

boooooooom

8 years ago

@CarlosHerrera81 Well ideally it can output a 0V (referenced to ground), so to answer your question, the NAND's output is connected to ground if it should transmit a 0V. In practical circuits this might actually not be exactly 0V due to stray voltages in the transistor circuitry (which would probably output a 'low' in the range of 0V to 0.8V).

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