Here’s how it works. LM317 fans will recognize Figure 1 as the traditional LM317 constant current source topology that maintains Iout = Vadj/Rs by forcing the ADJ pin to be 1.25 V more negative (a.k.a ...
The current source uses a 24-volt switch-mode power supply and the popular LM317 adjustable voltage regulator. The ‘317 can be configured in a constant current mode by connecting the chip’s ...
In his video [Afroman] describes how the LM317 can be used to regulate current rather than voltage to provide a constant current source under varying load. This can useful for a number of ...
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