Variable Voltage Regulator based LM117

variable voltage regulator base LM117The regulator circuit uses an LM117K three-terminal adjustable output positive voltage regulator in a TO-3 can. The variable voltage regulator lets you adjust the output voltage of a fixed DC power supply between 1.2 and 37 VDC, and will supply the output current in excess of 1.5 A.

Thermal overload protection and short-circuit current-limiting constant with temperature are included in the package. Capacitor Cl reduces sensitivity to input line impedance, and C2 reduces excessive ringing. Diode CR1 prevents C2 from diseharoinu through the IC during an output short.

Power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another and, as a result, power supplies are sometimes referred to as electric power converters. Some power supplies are discrete, stand-alone devices, whereas others are built into larger devices along with their loads. Examples of the latter include power supplies found in desktop computers and consumer electronics devices.


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