Monitoring system for the output stage of a bridge
US4893252A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1987 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Nov 20, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/52
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a monitoring system for a bridge output stage which is connected in series with a controllable source of current, to the terminals of a source of operating voltage, the voltage over the bridge output stage and the voltage drop over a current-measurement resistor are fed to a subtraction circuit. The subtraction circuit is connected, via an analog-to-digital converter, to an input of a microcomputer, and a program is provided by which it is tested whether the voltage at the input of the microcomputer lies within a predetermined range. The operating voltage and the voltage over the controllable source of current are preferably fed to a further subtraction circuit the output of which is connected to an output of the subtraction circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.