Not relay based on ULN2002

126

02:03:35

published 11 years ago

Voltransistor

11 years ago

You need to ground a resistor for every "NOT" input, and turn the switches to the "POSITIVE" side on the source, not ground.

justinmcg67

11 years ago

A good pulldown resistor value is 10k - 100k. That should be more than sufficient.

Voltransistor

11 years ago

True. Lol. I usually do about 100k ohm.

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