Manufacture of polymeric type positive temperature coefficient resistor devices

摘要

Apparatus and method for producing polymeric type positive temperature coefficient resistor devices takes a strip of PTC material (100) preferably produced by a continuous extrusion and lamination process and cuts discrete devices (10) from the strip. The cutter (42) cuts the devices to a precise predetermined length and the resistance of each device is measured (45) as it is cut. The predetermined length of each successive device to be cut is determined based on a desired resistance value of the device and the length and measured resistance of the just cut device. Printing station (55) adds indicia to the devices indicating relevant information about the devices.