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Friday, June 3, 2011

Simple Programmable Current Source/Regulator Circuit


This is a simple circuit of programmable current source/regulator. This circuit is used to generate current. This is the figure of the circuit;

This circuit uses L 200 as main component. The error amplifier of this circuit is disabled by shorting pin 4 to ground. The value R is used to fix the output Io :

Io=(V5-2)/R
The output voltage can reach a maximum value Vi
– Vdrop=Vi 2 V (Vdrop depends on Io ).

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