Patent · US Expired

Switching system to short-circuit a load with minimum residual voltage

US4054898A · kind A · utility

8Cited by

3References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Streit
Karl Staiger
Gerhard Conzelmann · Echterdingen, DE
Hartmut Seiler · Reutlingen, DE
Karl Nagel · Gomaringen, DE

Key dates

Filing date	Sep 20, 1976
Grant date	Oct 18, 1977
Priority date	—
Expiry date	Sep 20, 1996

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/602
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A controlled main switch, typically a semiconductor switch, is connected in parallel to the load. In accordance with the invention, an auxiliary switch, typically also a semiconductor switch such as a switching transistor is directly connected across the terminals of the load, and with an impedance, for example a resistance, diode, or Zener diode to the main switch, and controlled to switch in synchronism with the main switch, so that the residual voltage across the load due to inherent voltage drop across the terminals of the switch becomes a minimum. Integrated technology may be used, combining preamplifiers and distribution networks in one monolithic chip.

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