| 摘要 |
A temperature controlled electric hand soldering iron has a handle which carries a support tube in which the soldering tip and a heating element are mounted. The soldering tip has a bore formed therein in which the support tube is received, a liquid expansion control thermostat being located in the bore at the innermost end thereof. The thermostat is partially enclosed within the tube and extends forwardly thereof for contact with the soldering tip at the end of the bore. A switch is located in the handle for controlling the heating element and is responsive thermally to a capilliary tube that projects from the thermostat.
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