I need help to design a current generator with variable adjustable current values but once adjusted needs to be constant, while the load (7.4 ohm coil) may become hot and change the resistance. The current needs to be adjustable between 100 to 700 mA ( a pot. or a resistor divider will do it), power supply 12V and operate at military or automotive specs.
Any help will be appreciated.
Any help will be appreciated.