| 摘要 |
In a clothes dryer control circuit, a four terminal semiconductor thermal coupler device has input terminals connected in circuit with the heating means and a thermostat of the dryer control circuit and an output including a variable resistance connected in series with the timer motor of the dryer control circuit. The variable resistance changes in response to heating, due to current flow through the input of the device, between low and high values to control energization of the timer motor. The input terminals of the device may be connected in parallel with respect to a thermostat or the heater means, depending on whether the thermal coupler device has a positive or negative temperature coefficient of resistance.
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