A converter that tapers off a 4 mA input to zero, and adds the input and the tapered off 4mA signal to create a 2-wire 4-20 mA output loop.
It has long been known that the simple combination of a depletion-mode MOSFET (and before these were available, a JFET) and a resistor made a simple, serviceable current source such as that seen on ...
CMOS current reference circuits play a critical role in modern integrated circuits by providing a stable and reproducible current source that remains unaffected by variations in supply voltage, ...
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