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denis,
found it: Planet Analog, Kendall Kastor-Perry,
Just Add a Transistor: The 4-20 mA Current Loop
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denis,
Please check this thread for possible solution using current mirror
Re: Increasing Voltage Compliance with iDAC and Current Mirror
Another method can be using PSoC opamp in Howland pump configuration +IDAC. Not sure it will hold 20mA. See Figure 13 in
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denis,
found it: Planet Analog, Kendall Kastor-Perry,
Just Add a Transistor: The 4-20 mA Current Loop
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Hi,i want to create 4-20mA output on psoc5.how can i do that?
another one can i change output voltage control with fixed current that created on idac ?
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And, for completeness, this is current mirror design approach. Saved from PSoC Insider blog, which is no longer available...
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Hi,
Thanks, I will try it later,
just I know now that is a solution in my request.
Thank you very much for help.
Denis Maccorin
Le 23 janv. 2019 à 22:49, user_342122993 <community-manager@cypress.com> a écrit :
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How built a 4-20 mA IDAC
reply from user_342122993 <https://community.cypress.com/people/user_342122993?et=watches.email.thread> in PSoC 5LP MCU Community - View the full discussion <https://community.cypress.com/message/185032?et=watches.email.thread#185032>
And, for completeness, this is current mirror design approach.
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thanks a lot for answer but i want to creat a 4-20mA source with IDAC.i want to control an electrical switch with IDAC.(electrical switch has a controller between 4-20mA for speed and some function).
thanks a lot...
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No body can help me?I need 4-20mA source to control some device.how can i do that with psoc5?
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I am using this circuit to creat 4-20mA on output node.but i cant get more than 5mA.i set Pin_a and Pinb and opamp output on analog mode.i set R1=1k ohm and R2=100 ohm.
please give me a solution to give more than 5mA(i need maximum 20mA)?
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roshandelpoor,
What is the load resistance?
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load is 125 ohm.is it ok?or not?