Patent · US Expired

Circuit arrangement for an ignition stage, in particular for the ignition circuit of a motor vehicle

US6167876A · kind A · utility

0Cited by

7References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Manfred Uebele · Reutlingen, DE
Horst Meinders · Reutlingen, DE
Ning Qu · Beijing, CN

Key dates

Filing date	Sep 7, 1999
Grant date	Jan 2, 2001
Priority date	—
Expiry date	Sep 7, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02P3/0552
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A circuit arrangement of an ignition output stage, in particular for an ignition circuit of a motor vehicle, is described. The circuit arrangement includes a multiple Darlington transistor (Darlington) which drives a primary winding of an ignition coil, as well as a driving circuit for the Darlington. An n-p-n Darlington is provided, whose collector is connected to the positive terminal of a voltage source and whose emitter is connected to a first terminal of the primary winding of the ignition coil. The second terminal of the primary winding is connected to ground. The Darlington is driven via a decoupling element which isolates the driving circuit from a negative reverse voltage present at the base of the Darlington when the latter is turned off.

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