Rectifier circuits using transistors as rectifying elements
US3940682A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Nov 22, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/217
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Full-wave and half-wave rectifier circuits are disclosed; the former circuit using two transistors and the latter circuit using one transistor. In both circuits transistors are connected in an inverted mode so that, for example, with an NPN transistor current flow is such that line current flows into the emitter and load current flows out of the collector. Furthermore, voltage blocking is performed by the collector-base junction instead of the emitter-base junction. High efficiency is achieved by controlling the transistor base current in response to the emitter current so that the base current is proportional to the emitter current and is also at an optimum magnitude so as to minimize circuit losses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.