Series voltage regulator employing a variable reference voltage
US4633162A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1984 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Nov 7, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/468
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a series voltage regulator having a regulating transistor (T) arranged with its emitter-to-collector path in a series arm of the regulator, the base of this regulating transistor being controlled by a differential amplifier (V) which compares a voltage proportional to the regulator output voltage (U.sub.2) with a reference voltage (U.sub.C), this reference voltage is available from a capacitor (C) to which a voltage limiting circuit (B) limiting the reference voltage to a maximum level (U.sub.R) is assigned, and which is connected to the output of a transconductance circuit (G) whose output current (I.sub.A) depends on the difference (U.sub.D) between the output voltage (U.sub.2) and the input voltage (U.sub.1) of the series voltage regulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.