Hello Everyone-this is my first post and I will try to make sense since I am an very inexperienced amateur.
I have an infinitely variable 0-5v 20 ma output from an USB D-A converter (LabJack Industries) controlled from my computer. I want to control an 8V, 2amps regulator with the DA.
I do not want to use a digital pot circuit because of the number of inputs from the DA required for the Digital Pot. Another requirement is that the two circuits (the output of the DA and the regulator) must be electrically isolated so I do not blow the DA.
I have tried controlling a variable 8v, 2A regulator by replacing the linear pot with an analog optical isolator which works great but the gain is so small with the AOI. (1.5V in turns on the circuit 1.55V gives half output and 1.6V turns off the circuit).
Does anyone have a suggestion on what I might look at?
Thank you so much!!! Free rides in a 747 flight simulator!!!
I have an infinitely variable 0-5v 20 ma output from an USB D-A converter (LabJack Industries) controlled from my computer. I want to control an 8V, 2amps regulator with the DA.
I do not want to use a digital pot circuit because of the number of inputs from the DA required for the Digital Pot. Another requirement is that the two circuits (the output of the DA and the regulator) must be electrically isolated so I do not blow the DA.
I have tried controlling a variable 8v, 2A regulator by replacing the linear pot with an analog optical isolator which works great but the gain is so small with the AOI. (1.5V in turns on the circuit 1.55V gives half output and 1.6V turns off the circuit).
Does anyone have a suggestion on what I might look at?
Thank you so much!!! Free rides in a 747 flight simulator!!!