Electric heating – Inductive heating – With power supply system
Patent
1992-10-19
1994-12-27
Leung, Philip H.
Electric heating
Inductive heating
With power supply system
219626, 219664, H05B 608
Patent
active
053767756
ABSTRACT:
A high frequency induction heating appliance comprising a working coil for generating a high frequency signal, a switching device for switching a drive voltage to the working coil, a low voltage transformer for lowering an AC power voltage, an input current detector for detecting current of the AC power, an output adjusting device for providing an output adjusting signal, a differential amplifier for amplifying a difference between output signals from the input current detector and output adjusting device, a first comparator for comparing the output signal from the input current detector with a reference voltage, an integrator for integrating an output signal from the differential amplifier, a start signal generating circuit, a zero crossing detecting circuit, a delay circuit for delaying a zero crossing detect signal by a time period, an AND logic operating circuit for AND logic-operating a start signal and the delayed zero crossing detect signal, a synchronizing signal generator, a reference signal generator, a second comparator for comparing an output signal from the AND logic operating circuit with a reference signal or comparing an output signal from the integrator with the reference signal, and a drive controller for controlling the operation of the switching device in response to an output signal from the second comparator.
REFERENCES:
patent: 4686340 (1987-08-01), Fukasawa
patent: 4764652 (1988-08-01), Lee
patent: 4810847 (1989-03-01), Ito
patent: 4820891 (1989-04-01), Tanaka et al.
patent: 5099379 (1992-03-01), Lee
patent: 5111014 (1992-05-01), Tanaka et al.
Goldstar Co. Ltd.
Leung Philip H.
LandOfFree
High frequency induction heating appliance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High frequency induction heating appliance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High frequency induction heating appliance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-920625