Potentiometers are three terminal devices. Two terminals are the ends of a fixed resistive element. The third terminal is a wiper that makes an electrical connection to a variable point along the resistive element. The exact point the wiper connects to the resistive element depends on where the dial/screw driver slot is turned to.
Trimmer potentiometer (trimpots) are small versions of potentiometers. They tend to fit in breadboards. Some of them fit really easily, and are a very common component now.
You can get a signal voltage that is the full supply voltage, no voltage at all (a direct connection to ground), and any voltage in between them.
It is just a signal voltage because any load that needs current will throw off the voltage. It’s best to give the trimpot output voltage to the input of circuitry that needs no current from that voltage.
- Brief 555 bistable mode flip flop alternating LEDs circuit
- Brief 555 timer monostable one shot mode circuit
- Brief 555 timer astable multivibrator mode circuit
- Brief 555 Schmitt trigger logic inverter
- Brief DPDT relay component introduction – Double pole double throw
- Brief capacitor charging RC time constant demonstration circuit
- Brief capacitor discharge RC time constant circuit
- Brief charging capacitor voltage ramp circuit using LM334 current source
- Brief discharging capacitor voltage ramp using LM334 current source
- Brief fixed resistor voltage divider circuit
- Information on this site is not guaranteed to be accurate. Always consult the manufacturer info/datasheet of parts you use. Research the proper safety precautions for everything you do.