The first time I ever heard of the word “relay” is from relay-race sports in Olympic Games. That was in my childhood. After that I heard it probably in one my electrical engineering courses where there was a topic called Relay switch (made out of Field effect transistors) that switch would relay ac current through it when it’s gate is turned on by 5 volts.
Some relays are turned on by zaps
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Of course they are 😂
Some people too
🔥
I’d love to see nip 57 to pay for relay, what relays currently offer this?