The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1999
Filed:
Sep. 10, 1997
Lupu Wittner, Netanya, IL;
Eduard Konstantinovsky, Netanya, IL;
Target Hi-Tec Electronics Ltd., Netanya, IL;
Abstract
An electronic switch circuit for controlling a main circuit including a power source and a load, the electronic switch circuit including (a) an electromagnetic relay device including an electromagnet and at least two contacts, the electromagnetic relay device being connectable in series to the power source and the load of the main circuit; (b) a controlled semiconductor device being a part of the electronic switch circuit; (c) a semiconductor command circuit being connected to the semiconductor device, the semiconductor command circuit serving for controlling the operation of the controlled semiconductor device; (d) a relay command circuit being connected to the electromagnet of the electromagnetic relay device and to the semiconductor command circuit, the relay command circuit serving for controlling the relay device and the semiconductor command circuit; (e) an overload sensor serving for determining a current load flowing through the main circuit and for reporting the relay command circuit of a current overload; (f) a resistor being connected in series to the controlled semiconductor device; and (g) an inducer being connectable in series to the load, the inducer being positioned in close proximity to the electromagnet of the electromagnetic relay device; wherein when the contacts of the relay device are disconnected, the resistor which thereby experiences a higher current load, automatically signals the semiconductor command circuit, which in turn turns the controlled semiconductor device off; and further wherein when the inducer experiences a current load above a predetermined threshold the inducer generates an induction field of a magnitude sufficient to induce the electromagnet of the electromagnetic relay device to disconnect the contacts.