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4 to 20mA with grounded load using mosfet

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hemnath

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How to control the current output with DAC and mosfet for the grounded load. I have tried with floating load, it works perfectly. But for the grounded load, Please help.
 

Hi,

a frequently asked question. Therefore there are many discussions and many example circuits.

https://www.edaboard.com/showthread.php?t=190472

Also use the links in the box "similar threads" below.
****

It´s more simple to use a high side connected load. Is it a "must" to use GND connected load?

Klaus
 

Hey I am getting the analog output of current loop transmitter interfacing with arduino, Is it necessary to use mosfet for grounded load to control the analog output? Is there any other alternate schematic which will be useful ?
 

Hi,

Not clear what you mean.
Show a circuit.

Klaus
 

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