Recent content by etrader02

regards accuracy it needs to be able to go as low a zero ma but can far exceed 20ma afterall i will be monitoring the current flow by putting a multimeter in series.

yes i just want to build an adjustable analog current source to help in commisioning actuators/valves that i use at work. they operate on a 4 - 20ma signal, ocasionally we use 0 -20ma actuators/valves the circuit impeadance is in the range of 350 ohms. and yes as you say this would ideally...

Hi does anyone know of a simple circuit that i can build to generate a ma signal from 0 - 20ma ? using a 9v pp3 or similar there does not need to be a digital indicator on the circuit as i will series the generator with a digital multimeter, i just need to be able to generate a ma signal that...