![]() The LM317 circuit is shown in the below figure is a t ypical configuration of the LM317 voltage regulator circuit diagram including the decoupling capacitors. The three terminals are input pin, output pin, and adjustment pin. If we connect a fixed resistor between the output and adjustment of the LM317 regulator, then the LM317 circuit can be used as a precision current regulator. ![]() It is majorly used for local and on-card regulation. It is a three-terminal-adjustable-voltage regulator and is easy to use because to set the output voltage it requires only two external resistors in the LM317 voltage regulator circuit. Widlar while they worked at the National Semiconductor in 1970. It is a type of positive-linear-voltage regulators used for voltage regulation, which is invented by Robert C. Voltage Regulator LM317 Voltage Regulator LM317 Voltage Regulator ![]() These are again subdivided into many types as Electronic voltage regulators, Electro-mechanical regulators, Automatic voltage regulators, linear voltage regulators, Switching regulators, LM317 voltage regulators, Hybrid regulators, SCR regulators, and so on. There are different types of voltage regulators such as Fixed voltage regulators and Variable voltage regulators. The voltage regulation in a power supply system can be achieved using an electrical or electronic device called as voltage regulators.
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