Microwave oven and method of controlling the same
US6472649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/666
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling a microwave oven including a power supply part supplying an AC power, a high voltage transformer generating a high voltage with the AC power generated from the power supply part, a magnetron generating electromagnetic waves with the high voltage generated from the high voltage transformer, and a control signal generator part supplying a control signal to the magnetron, the method including the steps of: setting up a reference oscillation time; measuring the time when the magnetron starts being oscillated according to the control signal; comparing the reference oscillation time with the oscillation start time; and adjusting a pulse width of the control signal where the reference oscillation time is longer than the oscillation start time. With this configuration, the temporary surge operation and the noise generation can be lowered in the hot state, thereby serving to enhance a stability of the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.