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LM317 integrated voltage regulator circuit - Power Circuit - Circuit Diagram

November 22, 2022
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The LM317 is a common adjustable integrated regulator with a maximum output current of 2.2A and an output voltage range of 1.25 to 37V. The connection is as follows:

1.25V voltage reference between 1, 2 feet. To ensure the output performance of the regulator, R1 should be less than 240 ohms. The regulated voltage value can be adjusted by changing the value of R2. D1, D2 are used to protect the LM317.

Uo=(1+R2/R1)*1.25

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