August 25, 2020
An Oldie but a Goodie
August 25, 2020
The oldest known melody - circa 1400 B.C. That drone note starts to drill into your head after a while.
The simplest kind of switch is ON-OFF. This has two terminals, and simply interrupts the electrical path. Such a switch is referred to an SPST, or "single-pole single-throw", because it switches one circuit or "pole" in one way, or "throw". More complex switches are simply combinations of this basic element.
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