MOS-transistor bridge circuit
US4950919A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1988 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | May 16, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In this MOS-transistor bridge circuit, for obtaining a fast flyback conduction of the current after a normal operation of the circuit, instead of the flyback diodes associated with each transistor of the bridge, the MOS transistors themselves are employed, driven so as to conduct current from the ground to the power supply, that is in the opposite direction with respect to that of normal operation. For this purpose a control section is provided receiving at the input a fast flyback signal and comprising delay gates connected to the disable inputs of the transistors, so as to delay switching off thereof, and to maintain in the on state two diagonally opposed transistors so as to allow current to flow from the ground to the power supply through these diagonally opposed transistors and the load until the current decreases to zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.