Power supply apparatus
US6483687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jul 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/1006
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A voltage from an AC power source is converted into a DC voltage in an input-side rectifier-smoother circuit. The DC voltage is then converted into a high-frequency voltage in an inverter, and the resulting high-frequency voltage is voltage-transformed in a transformer. The voltage-transformed high-frequency voltage is converted into a DC voltage in an output-side rectifier-smoother circuit, which is applied via output terminals to a load. The input-side and output-side rectifier-smoother circuits, the inverter and the transformer are enclosed in a casing having a plastic panel. The output terminal of the apparatus is mounted on the plastic panel. When a temperature sensing unit with a temperature sensor disposed on the panel near the output terminal senses that the temperature of the panel has risen above a predetermined temperature, which is lower than the heat deformation temperature of the panel, a gate signal ON-OFF circuit prevents a gate signal from a gate signal generating circuit from being coupled to the inverter. The gate signal ON-OFF circuit permits the gate signal to be coupled to the inverter when the temperature sensing unit senses that the temperature of the panel …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.