Patent · US Expired

AC controller

US5808327A · kind A · utility

11Cited by

1References

4Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Reinhard Maier · Herzogenaurach, DE
Heinz Mitlehner · Uttenreuth, DE
Hermann Zierhut · Munich, DE

Key dates

Filing date	Mar 8, 1996
Grant date	Sep 15, 1998
Priority date	—
Expiry date	Mar 8, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S257/901
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An AC power controller includes at least two semiconductor regions reverse-connected in series. Each semiconductor region has an electron donor (source), an electron sink (drain) and an electron flow control electrode (gate) with characteristic curves such as those exhibited by FETs. Each semiconductor region also has an internal body diode. The gate-source voltage of a respective semiconductor region in the forward direction is set to be large enough to establish a desired limiting of the drain-source current. Yet, the gate-source voltage of the semiconductor region in the inverse mode is set to be large enough for the body diode to remain de-energized.

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