Conversion of sinusoidal to spikes ?

crutschow said:

It was sort of buried in the quote from Ethernet:

ETHERNET QUOTE: The already isolated transformer output is not used for any other purpose than obtaining 230V 50Hz pulses, it has no grounded side.

(My Reply in blue in the quote): In that case you ground one side of the output and use the suggested comparator, one-shot circuit.

So guess my reply wasn't that obvious.

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