Voltage Regulator Resistor. A simple voltage current regulator can be made from a resistor in series with a diode or series of diodes. Kdi fl 1 50m 1 resistor high voltage.
As most of you know the postwar locomotives with smoke units run 16ohm element. Within the ic the i p voltage must be at least 1 5v larger than the output voltage rated for this ic to be operated as shown the required components. Due to the logarithmic shape of diode v i curves the voltage across the diode changes only slightly due to changes in current drawn or changes in the input.
If you have the voltage set to 9 volts it will still reduce the voltage down to 5 volts.
12v will make a 675 move pretty good while a 726 or 773 will move slower. Contrasted to a set of resistors the linear regulator reduces the voltage to a set level determined by the hardware. A 12v battery 12v power source a 2 2k ohm resistor 300 ohm resistor 100uf capacitor 0 1uf capacitor ic lm317 sinking heat work. As most of you know the postwar locomotives with smoke units run 16ohm element.
