Power supply circuit for remotely turning-on electrical appliances

摘要

A power supply circuit for an electrical appliance, including a turning-on stage configured for determining a transition from a turned-off state, in which the power supply circuit is off and does not supply electric power, to a turned-on state of the power supply circuit. The turning-on stage includes a transducer of the remote-control type configured for triggering the transition in response to the reception of a wireless signal. In some embodiments, operating power is transmitted from a remote controller to a control circuit of the electronic equipment, such that the electronic equipment can be turned on remotely but draws zero standby power.

主权项

1. A control circuit configured to control electronic equipment in response to a remote controller, comprising:
a converter circuit configured to convert electromagnetic energy received from the remote controller to stored energy; a power management circuit configured to provide a regulated supply voltage based on the stored energy; a control logic circuit energized by the regulated supply voltage and configured to to detect a match between an ID code received from the remote controller and a local ID code representative of the electronic equipment, and to provide an enable signal in response to detecting the match; and an actuator circuit configured to activate the electronic equipment in response to the enable signal.