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A comparator compares two voltages or currents and switches an output to indicate which is larger.
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Need help explaining this circuit and how it is dimensioned and designed
"EM Fields" said according to the data sheet of 1N4735A that uses Izt=41mA for testing, he found there was problem with the value of R1 (4.7kΩ) that limits the current to about 4mA.
The value of Izt …