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Author Topic: Problem with Probe signal from Brain  (Read 10039 times)

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Offline MN300

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Re: Problem with Probe signal from Brain
« Reply #10 on: July 03, 2019, 12:49:14 PM »
The other side of both switches go to ground.
The NC switch normally shunts the current from R1 to ground. When the switch operates R1 is released to turn on the transistor, pulling the output to ground.
The NO switch directly pulls the output to ground.