madhippiescientist
New Member
The stepper motor circuit (timer, dividers, shift register) is always on (connected to the 7810 is only the motor). The minimum draw is several hundred ma, spiking up to circa 1.8A when the servo motor plots activity (the servo shares the 7810).
Could you explain how to determine the value of this resistor? Tell me most importantly, if the draw varies and the resistor contributes, will the voltage vary as well (I need it to STAY at a VERY specific voltage level somewhere within a few tenths of 10v).
If the current never drops below a certain level you could connect a resistor between the input and output of the LM7810.
Suppose the regulator can continuously supply 1A but you need 1.8A and the minimum load is 1A. If you connected a resistor that always passes 1A from the input to output , the regulation won't suffer as long as the minimm load current is drawn.
Could you explain how to determine the value of this resistor? Tell me most importantly, if the draw varies and the resistor contributes, will the voltage vary as well (I need it to STAY at a VERY specific voltage level somewhere within a few tenths of 10v).