Patent ID: 6275681
Filing Date: 2001-08-14
Classification: G06K,G08B,H04B,Y02D

Abstract:
A wireless electrostatic rechargeable device for being electrically charged by an electrostatic charge, the wireless electrostatic rechargeable device comprising:an energy storage means with a capacity to store energy to operate the wireless electrostatic rechargeable device;an electrostatic charge receiver, for receiving an electrostatic charge and converting it into a first AC signal, the electrostatic charge receiver comprising:a first electrostatic electrode, coupled to the rectifier; anda second electrostatic electrode, coupled to the rectifier,whereby the first electrostatic electrode and the second electrostatic electrode receive the electrostatic charge;a rectifier, coupled to the electrostatic charge receiver, for receiving the first AC signal and providing a DC signal, wherein the rectifier is a bridge rectifier comprising:a first diode having a cathode coupled to the second electrostatic electrode and an anode coupled to a low level supply voltage;a second diode having a cathode coupled to the first electrostatic electrode and an anode coupled to the low level supply voltage;a third diode having a cathode coupled to the voltage regulator and an anode coupled to the second electrostatic electrode; anda fourth diode having a cathode coupled to the voltage regulator and an anode coupled to the first electrostatic electrode,whereby the first diode, the second diode, the third diode, and the fourth diode are for rectifying the first AC signal into the DC signal;a voltage regulator, coupled to the rectifier, for receiving the DC signal and for regulating the DC signal to a DC voltage at a DC supply node; anda charge controller, coupled to the voltage regulator and the energy storage means, for storing energy in the energy storage means when the DC voltage is provided by the voltage regulator and preventing degradation of the energy storage means when the DC voltage is not sufficiently provided by the voltage regulator,whereby the wireless electrostatic rechargeable device may be electrically charged by the electrostatic charge.