Arrangement and method for generating high voltage from a low-voltage supply source
US6597156B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Jun 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/486
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention is directed to an arrangement and a method for generating high voltage from a low-voltage supply source using a charge reservoir chargeable and rechargeable to the desired high voltage or higher via a charge pump. A first switching device regulates the supply of electric charge from the precharged charge reservoir to a separate storage capacitor. As a result, a high voltage signal that is extensively noise-free is available during certain operating phases, such as a measurement process. A second switching device ensures a regulated discharge from the storage capacitor when the capacitor is overcharged, for example, for the readjustment of the high voltage to be generated. A capacitive voltage divider, which reduces the high voltage without losses, is provided to determine the actual value of the high voltage. At very small currents, the desired high voltage can be maintained by using the capacitive voltage divider for a substantially longer time than by using an ohmic voltage divider.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.