How to Make Voltage Regulator Circuits
In the simple regulator above, Vin is 12V, and Vout is 5V, and I is 10mA. Without the Zener R1, then it would be R=V/I = 12-5/0.01 = 700Ω. ... Adjustable Voltage Regulator. And finally, we come to the end of the evolution with an adjustable three-terminal regulator—the famous LM317 voltage regulator, ...
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