hi ashok,Input range : 4mA to 20mA Current From sensor.
Output : 3.3V @10mA Fixed output Voltage.
I Have to generate fixed 3.3V from 4mA-20mA Current.not from external 3.3V.
When the current loop is less than 10mA, ie: say 4mA thru 9.9mA, how is the 10mA at 3.3v going to be generated.?
Perhaps it would help if you said what the purpose is of the project, there maybe alternative solutions.
It is not possible to increase the power out to 3.3v at 10mA, from a < 10mA source.
I would say you need a external 3.3v source able to supply 10mA.
Hi dendad,Are you trying to get a 3.3V power supply for a sensor from the loop current, or something like that?
You do need to give us more info if you want us to help. So far, your question is pretty confusing.
Please explain your application in detail.
For example, what is the voltage driving the 4-20mA loop?
Is this a sensor supply?
Just in a linear mode, it is impossible to get a 3.3V 10mA supply from a 4-20mA loop current. So, as said above, you really do need to explain what you want in detail.
Ok Ashok.Hi dendad,
The sensor which i am using is giving current as output .When i measure the output current from the sensor its in the range : 4mA-20mA.
So the above current (generated from the sensor) , i need to convert it to a fixed voltage = 3.3V, which in turn i need it to turn ON a micro-controller.
Kindly, suggest me the component/circuits to convert variable-current to a fixed voltage(=3.3V) i.e. from 4mA-20mA to fixed 3.3V voltage to turn on the micro controller
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