50k Multiturn Trimpot Trimming Potentiometer Through-hole Diameter 7mm LM7912 is a Negative voltage

LM7912 is a Negative voltage regulator that outputs -12 volts

6V(Green) / 3

as long as the step does not lose speed will not change

There are also a variety of instructional and support resources available online

fax machines

50k Multiturn Trimpot Trimming Potentiometer Through-hole Diameter 7mm LM7912 is a Negative voltageIt's a Square Trimpot Trimming Potentiometers perform a variety of circuit adjustments in all types of electronic equipment. Lead screw, worm gear, and planetary gear are the three forms of actuation used in multi turn trimmers. Trimmers with lead screws have a linear wiper path, whereas those with worm gear and planetary gear have a circular path. Multiturn trimmers are ideal for Applications requiring precise resistance control. The potentiometer is