A cermet preset is a compact, PCB-mountable variable resistor with three terminals. As the preset is adjusted, the voltage between its terminals changes accordingly.
Variable resistors like this are used to control voltage levels in a circuit. Typically, the two outer pins are connected to Vcc and ground (0V), while the center pin (wiper) provides a variable output voltage ranging from 0V to Vcc as the cermet preset is rotated.
You can also consider the 500K Cermet (Pack of 5), which is a PCB-mountable variable resistor designed to adjust resistance values in electronic circuits.
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