Patent · US Expired

Two-wire switch

US4745300A · kind A · utility

27Cited by

11References

11Claims

0Family size

Assignee

Gebhard Balluff Fabrik feinmechanischer Erzeugnisse GmbH & Co. · DE

Inventors

Heinz Kammerer · Esslingen am Neckar, DE
Peter Dolderer · Eßlingen, DE

Key dates

Filing date	Apr 27, 1987
Grant date	May 17, 1988
Priority date	—
Expiry date	Apr 27, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/0006
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a two-wire switch for connecting a load to an ac ltage source, and, in particular, to a two-wire switch with an auxiliary voltage source. A capacitor acting as charge storage device can be charged by the auxiliary voltage source which operates on the principle of phase angle control. In accordance with the invention, a series connection comprising a threshold element which can be brought into the conducting state when there is a prescribed minimum voltage across the capacitor, and a diode is inserted into a control current circuit for a controllable semiconductor device on the input side of the bridge.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.