Field calibration of microwave oven
US8680445B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 2010 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jun 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/68
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage calibration routine for an oven, particularly a microwave oven, enables a field technician to enter a voltage calibration mode to display on the oven a pre-established default voltage to which the oven is calibrated. The technician then measures the actual line voltage applied to the oven and, if different than the default voltage displayed, inputs the actual line voltage into the microwave oven control, such as via a keypad. Thereafter, an offset value is calculated to correct the voltage measurement, allowing for a correct tap selection when the microwave oven is running. An additional function is available to check the oven voltage reading upon accessing a voltage reading mode wherein the oven measures and displays the line voltage which is compared to a volt meter reading such that a simple comparison can be made, while avoiding certain steps associated with the voltage calibration mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.