(So far, 13 people got it right out of 52 for a success rate of 25%)
Often, a relais, driven by a transistor, is used to switch heavy loads. The coil of the relais is bypassed by a free-wheeling diode, to protect the switching transistor. So far, so good.But what is the purpose of the zener diode, sometimes seen in such circuits?
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Comment by ●August 12, 2024
"relay", not "relais"
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Comment by ●August 15, 2024
Thank you, but English is not my mother tongue.
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Comment by ●July 19, 2025
Nice information, Sir. I appreciate it. If I am not wrong, the coil discharge time is reduced by the zener diode because it operates in the breakdown region, right?
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