Hi all,
I want to convert 10V,4-20mA,50Hz analog signal to 3.6V.
IF i am not wrong, we can achieve this in 3-ways.
1) By using voltage divider circuit
2) By using OP-AMP
3)By using voltage compression Diode.
Please suggest me which one will be a good Practice and if possible please share the circuit.
If the above method is not correct please ignore and suggest me some method to achieve the above.
Thanks and BR
Sanjeev
sanjeev kumar87916 I want to convert 10V,4-20mA,50Hz analog signal to 3.6V.
Does this describe a single input signal or three different signals ?
sanjeev kumar87916 3)By using voltage compression Diode.
What is a voltage compression diode ?
Regards,
JayantD
Hi Jayant,
It describes single input.
And That diode is TVS diode.
BR
sanjeev
Hi Sanjeev,
This is what I understand from your description:
You have a 4-20mA loop operating on 10V. These are DC signals and conflict with your requirement of 50Hz.
Please clarify.
Hi jayant,
These are AC signals.
And rest what u analyze are correct.
Sanjeev,
I'm sorry, but I'm still not clear about your requirement.
How can a single 4-20mA signal operating on 10V DC also be a 50Hz AC signal ?
This signal is not dc these are Analog signal.
I need to convert 10v analog signal to 3.6V analog signal or around 3.6
Wish you all the best !
Edit:
Please help him, TI !
Thanks,
SANJEEV
Before I make any recommendations of circuits that have this desired operation, I want to make sure that I understand your requirements properly. From you post, what I gather is that you have a 4-20mA current loop system, with a 50Hz signal, the loop supply is 10V, and you would like to convert the received 4-20mA signal to a 0 to 3.6V output, is this correct?
Now some follow up questions. 10V seems to be a very low voltage for a 4-20mA loop supply, what other device is on this loop and what amount of voltage drop is necessary for its proper operation? Does the current-to-voltage circuit need to also be powered by the loop or does it have its own power supply?
If possible, a schematic or diagram of your system would greatly assist us in making the proper recommendations for your design.
Thank you,
John Caldwell
Analog Applications Engineer
PA Linear Apps
Just as the other gentleman indicated not everything is completely clear about how you are attempting to operate this 4 to 20mA application. Can you provide an illustration or schematic of the proposed idea?
Thomas
PA - Linear Applications Engineering
Hi John Caldwell & Thomas Kuehl,
What you have understand is correct.
Actually i m designing An input output board in which the input range for Analogue inputs is 4 - 20mA /0 - 10V. but my MCU can withstand 3.6V.
So i need to Bring this input supply to 3.6v. And power supply we need to provide.