Circuit adds foldback-current protection

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https://www.electronics-lab.com/circuit-adds-foldback-current-protection/

by Rafael Garcia-Gil @ edn.com: For many applications that require power-supply currents of a few amperes or less, three-terminal adjustable-output linear voltage regulators, such as National Semiconductor’s LM317, offer ease of use, low cost, and full on-chip overload protection. The addition of a few components can provide a three-terminal regulator with high-speed short-circuit current limiting for […]

Use an LM317 as 0 to 3V adjustable regulator

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https://www.electronics-lab.com/use-an-lm317-as-0-to-3v-adjustable-regulator-2/

by Vladimir Rentyuk @ edn.com: Most engineers know that they can use an inexpensive, three-terminal adjustable regulator, such as Fairchild Semiconductor’s LM317, as an adjustable regulator to only some necessary value of voltage, such as 36 or 3V. This value cannot be less than 1.25V without employing other approaches, however. The devices’ inner reference voltage is […]