| 摘要 |
An apparatus for protecting thermocouple circuits in an injection molding system includes a protection circuit for each thermocouple pair. The protection circuit includes a resettable fuse disposed in series with each thermocouple wire for preventing high leakage current from passing through, and a capacitor connected to the two wires of a thermocouple to filter out AC line noise. The protection circuits are integrated in a junction box used to connect a heater power cable and a thermocouple control cable to the hot-half of the molding machine.
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