High frequency heating apparatus with a temperature compensated switching element
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 4, 1991
Grant Date -
N/A
app pub date -
Jul 12, 1990
filing date -
Aug 10, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A microwave oven includes an inverter inducing a high frequency oscillating current at a primary winding of a transformer via a switching element turned on and off, a magnetron to which a high voltage is applied by the transformer, a temperature sensor sensing the temperature of heat generated by the switching element to thereby generate a temperature signal, and a microcomputer compensating 'on' and 'off' periods of the switching element in response to the temperature signal from the temperature sensor so that an increase in an amount of an anode current in the magnetron is restrained with an increase of the temperature sensed by the temperature sensor. The microcomputer also functions to deenergize the switching element when the temperature of the switching element sensed by the temperature sensor exceeds a predetermined value.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully