Temperature stable circuit for controlled current discharge during the driving of an inductive load
US5576648A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1994 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Feb 23, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/165
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for controlled discharge of energy stored in an inductive load, comprising an active semiconductor device (T) connected serially with the inductive load (L) between first and second terminals of a voltage supply source and having a control terminal for connection to a driver circuit (C), and a control circuit (R1, R2, COMP) connected between the inductive load and said control terminal. The control circuit comprises a voltage divider (R1, R2) connected between the inductive load (L) and the first terminal of the voltage supply source, and a comparator (COMP) having first and second input terminals respectively connected to the voltage divider and to a voltage reference and an output terminal which is coupled to the control terminal of the active element (T).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.