| 摘要 |
A power saving circuit is provided for a consumer device for disconnecting a mains power supply (2) from a supply circuit (including a transformer (18)) of the device when the device goes into a standby mode. The circuit comprises a high voltage switching module (16) interposed between the mains alternating current electrical power supply (2) and such a supply circuit. The circuit is reset by an actuable initiating component (12, 28) for generating a temporary signal to the high voltage switching module (16) to change the state of the switching module (16) to a conducting state. Then a sensing component (26) operates in a first mode responsive to the supply of mains alternating current to the supply circuit for maintaining the switching module (16) in a conducting state replacing the temporary signal. The sensing component (26) also operates in a second mode responsive to a target condition in the supply circuit indicative of the standby mode for changing the state of the high voltage switching module (16) to a non-conducting state.
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