Patent ID: 6072705
Filing Date: 2000-06-06
Classification: A61N,H01R

Abstract:
A power source conversion device capable of eliminating low-frequency radiation, comprising:a power source circuit designed to convert AC power source into DC power source;a detecting circuit to contact LIFE and NULL ends of power source respectively in sequence through a control circuit for detecting which is LIFE and which is NULL; a touch point is touched through human body or electronic appliance housing or referable zero potential point as a reference potential, if it is LIFE end, there is trifling current flowing through a photoelectric control device to generate a gleam to be received by a photoelectric inductor and resulted in a signal change of resistance or current to be operated by a central processing unit or a conventional line for actuating an actuating circuit; and there is no such phenomenon if it is NULL end;an actuating circuit to receive signal from the detecting circuit, the central processing unit or conventional line collates LIFE and NULL signals for several times without error and drives circuit operating to let output ground point connect NULL of power source at input end; if the detecting signals disappear during collation, the said circuit will stop operation at once; a locking circuit to lock the actuating circuit to keep it in a actuating state until the power source is cut off;a safe circuit as an overload protective device can prevent the danger caused by an erroneous circuit operation from happening so as to protect the safety of both personnel and computer;a warning circuit to warn the user touching a touch point or awaiting automatic actuating to actuate by means of signals before the circuit has not been actuated;through the foregoing combination, when human body or electronic appliance housing or referable zero potential point contacts the touch point, the circuit communicates with the power source and perform identification, when NULL is detected, NULL is locked onto an output ground point so that the power source in general can automatically finish correct grounding, the electromagnetic screening device in the electric appliance can develop its function to achieve the purpose of eliminating low-frequency radiation and preventing electric leakage from happening.