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Mr. Man-wai Chang Mr. Man-wai Chang is offline
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Default A circuit that outputs 3V when there was a pulse

On 12/08/16 21:08, Jon Danniken wrote:

How long does the 3V need to last? What should happen if there is
another pulse during the desired "3V on" duration?

Jon


I want to flash a super-bright LED when there is an incoming phone call.
Talking about the good, old fixed-line telephone.

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