Current loop circuit (0-20mA or 4-20mA)

[WinterInJuly]

Does any one has the current loop circuit (0-20mA or 4-20mA)?
I need to convert the voltage into current to transmit the signal for long distance
Thanks

 

[IanP]

circuit for a loop current 0-20ma

Have a look at the AM422. It is voltage to 4-20mA current converter..
**broken link removed**

Regards,
IanP

 

[attylus76]

design current loop circuit

hi,
Optimal council. If you want from a glance also to the AD694

 

[WinterInJuly]

am422 design

Thanks alot
Regards

 

[antedeluvian]

voltage to current converter am422

The Texas Instruments (Burr Brown) XTR110 also works well.

Note that this device and the AD part can only work in 3 wire mode.

 

[Candy8866]

0-20ma current loop

do you need voltage signal to 0-20mA or 4-20mA to ?is 0-5V or 0-10v or 0-2.5V OK?pls check the link,i think you can find your answer:
but it needs a power supply,such as 24V/12V/15V.**broken link removed**