Programmable protection circuit and its monolithic manufacturing
US5274524A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1991 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Dec 6, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A programmable protection circuit comprises three identical units connected between a common point (C) and a first conductor (A), a second conductor (B) and ground (M). Each unit comprises the anti-parallel arrangement of a thyristor (T) and a diode (D), a bipolar transistor (TR) being connected between the gate and anode of the thyristor, the anodes of the thyristors being connected to the common point and the base terminal of each unit constituting a programmation terminal and being connected to a device defining a voltage threshold. Each device defining a voltage threshold is a zener diode (Z1, Z2, Z3) connected between each base terminal and the common point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.