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Current Monitor Using JFET

2015-01-23 21:19  
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This circuit is Current Monitor. R1 senses current flow of a power supply. The JFET is used as a buffer because lD= lS, therefore the output monitor voltage accurately reflects the power supply current flow. This circuit is used as an OP-Amp LM301A Here is a schematic drawing:

Current Monitor Using JFET Current Monitor Using JFET

Source circuit : National Semiconductor Application

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