I built two of these boards now and they both react the same way . The current dooes not start reading until my load reaches 1700ma and it only reads .11amps any lower load and the current draw is 0.00. The schetch compiles and loads fine but the hardware does not work properly. changed both the mcp4921 and the opamp. No affect. Anyone have an idea what might be going on
suspect it might be the program, but a little week in that department. Help!
[original story: Circuit Digest]
The circuit board design seems to be missing the resistors R12&R13 on the Mosfet and Opamp IC2A. Will this circuit operate without these components?
[original story: Circuit Digest]
If you have ever worked with Batteries, SMPS circuits or other Power supply circuits, then often it would have occurred that you have to test your power source by loading it to check how it performs under different loading conditions. A device that is commonly used to perform this type of test is called a Constant Current DC Load, which allows us to adjust the output current of your power source and then keeps it constant until it is adjusted again changes.
[original story: Circuit Digest]