US 2009/0290277 A1 · Relay driving module and an electronic device incorporating the same

Abstract

A relay driving module is adapted for driving a latching relay, and includes a current limiting circuit, an energy storage component, and a switch circuit. The current limiting circuit is adapted for receiving a power signal, and draws an amount of current that does not exceed a current threshold from the power signal. The energy storage component is coupled electrically to the current limiting circuit for receiving the current from the current limiting circuit so as to store energy therein. The switch circuit is coupled electrically to the energy storage component, and is controlled by a control signal to selectively enable the energy storage component to discharge the energy stored therein so as to drive the latching relay.

Claims23

Dependent claims

A relay driving module adapted for driving a latching relay, said relay driving module comprising:

a current limiting circuit adapted for receiving a power signal, and drawing an amount of current that does not exceed a current threshold from the power signal;
an energy storage component coupled electrically to said current limiting circuit for receiving the current from said current limiting circuit so as to store energy therein;
and
a switch circuit coupled electrically to said energy storage component, and controlled by a control signal to selectively enable said energy storage component to discharge the energy stored therein so as to drive the latching relay.

1 more element

Dependencies are inferred from the claim text.

Relay driving module and an electronic device incorporating the same

Life of this patent

Relay driving module and an electronic device incorporating the same

Life of this patent

Abstract

Claims23