Good day all.
I think I might be just about to ask the impossible.
I have a DC motor controller, and I think something has gone wrong with the current sensing side of the circuit.
I don't know what the current sensing ic is, as it looks like it has not had any details etched into it, or it has been sanded off.
Most of the parts on the board are all smd.
I have tried to follow the current sensing traces on the pcb, and have come up with this schematic.
As said before I think there is something wrong, as pin7 without any load is showing 4.98-4.99volts.
So my questions are, does anyone have any idea what chip this might be, and what sort of voltage should I be seeing at the output with and without any load.
Thanks for your time.
Best Regards.
I think I might be just about to ask the impossible.
I have a DC motor controller, and I think something has gone wrong with the current sensing side of the circuit.
I don't know what the current sensing ic is, as it looks like it has not had any details etched into it, or it has been sanded off.
Most of the parts on the board are all smd.
I have tried to follow the current sensing traces on the pcb, and have come up with this schematic.
As said before I think there is something wrong, as pin7 without any load is showing 4.98-4.99volts.
So my questions are, does anyone have any idea what chip this might be, and what sort of voltage should I be seeing at the output with and without any load.
Thanks for your time.
Best Regards.