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Use an LM317 as 0 to 3V adjustable regulator

Use an LM317 as 0 to 3V adjustable regulator

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 1.25V, and their output

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PCB Rax An easy to use circuit board holding system

PCB Rax – An easy to use circuit board holding system

How many times have you had to set your soldering iron down because you couldn’t hold the solder and component, while trying to keep the circuit board from moving around? PCB Rax is an easy to use, versatile circuit board holder for repair, prototyping, and assembly that can hold nearly any shape of circuit board.

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