Patent ID: 6157136
Filing Date: 2000-12-05
Classification: H03K,H05B,Y02B

Abstract:
A frequency sensing control device adapted to control current flow through an electrical load, comprising:a current control circuit adapted to be connected to the electrical load and having a control input, said current control circuit being operable in a normal mode, where said control input receives a first logic signal so as to enable said current control circuit to maintain an initial current flow through the electrical load, and a dimming mode, where said control input receives a second logic signal so as to enable said current control circuit to vary the current flow through the electrical load;a logic signal generator having an input port and an output port connected to said control input of said current control circuit, said logic signal generator generating the first logic signal when said input port receives a high-frequency signal, and the second logic signal when said input port receives a low-frequency signal;an oscillator connected to said logic signal generator and operable so as to provide the high-frequency signal to said input port; anda sensing unit adapted to sense static electricity radiated by a human body and connected to said oscillator, said sensing unit generating the low-frequency signal, inhibiting said oscillator from providing the high-frequency signal to said input port, and providing the low-frequency signal to said input port through said oscillator upon sensing the static electricity radiated by the human body.