HEATING ELEMENT CONTROL CIRCUIT

摘要

A power control circuit includes first and second electrical power terminals connected across a source of electrical power. A heating element is connected to the first terminal. A heating element controller is connected in series with the heating element, between the heating element and the second terminal. The controller is configured to control a temperature level of the element, and includes a control input configured to receive a range of temperature settings, and an OFF command for the element. The controller includes an ON/OFF switch to disconnect the element from the second terminal, and a temperature level control switch to intermittently connect/disconnect the element to the second terminal. A jumper wire series-connects the ON/OFF switch to the temperature level control switch. The ON/OFF switch, the jumper wire, the temperature level control switch, and the element are electrically connected in series.

主权项

1. A power control circuit for an appliance, comprising:
a first electrical power terminal and a second electrical power terminal, for connection across a source of electrical power; a heating element electrically connected to the first electrical power terminal; a heating element controller electrically connected in series with the heating element, between the heating element and the second electrical power terminal, wherein the heating element controller is configured to control a temperature level of the heating element, the heating element controller comprising:
a control input configured to receive a range of temperature settings for the heating element, and configured to receive an OFF command for the heating element;an ON/OFF switch operatively connected to the control input and having ON and OFF states selectively controlled by the control input, wherein the ON/OFF switch is configured to disconnect the heating element from the second electrical power terminal when in the OFF state; anda temperature level control switch operatively connected to the control input, and configured to intermittently connect the heating element to and disconnect the heating element from the second electrical power terminal in accordance with a temperature setting of the control input; and a jumper wire electrically connecting the ON/OFF switch to the temperature level control switch such that the ON/OFF switch and the temperature level control switch are connected to each other in series, wherein the ON/OFF switch, the jumper wire, the temperature level control switch, and the heating element are electrically connected in series such that electrical power from the source of electrical power is provided to the heating element through the ON/OFF switch, the temperature level control switch, and the jumper wire electrically connecting the ON/OFF switch to the temperature level control switch.