Load-protection control circuit of power supply
US7259950B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2005 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Feb 4, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A load-protection control circuit of a power supply, which applies to the power supply that has a maximum power-limiting function. The power supply includes a power transformation circuit which outputs a direct current to drive loads and a control circuit which can switch the power transformation circuit electrically coupled to a power-protection circuit that has a voltage representing reference power. The direct current voltage driving the load is compared with the voltage representing reference power by the power-protection circuit to output a protection signal to the control circuit for switching the power transformation circuit. The power-protection circuit and the control circuit are electrically connected to a switcher circuit connected to a switch, wherein the switch can switch the switcher circuit to be in open-circuit or close-circuit state in order to determine whether the protection signal is transmitted to the control circuit. Thereby, the objective of load-protection control is accomplished.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.