Electric heating – Metal heating – Of cylinders
Patent
1987-12-28
1989-06-27
Salce, Patrick R.
Electric heating
Metal heating
Of cylinders
363 17, 363 98, 363132, H05B 664
Patent
active
048432024
ABSTRACT:
A microwave heating system uses a magnetron powered by a full wave full bridge inverter. The magnetron has its power output stabilized against variations which might be caused by fluctuations in the AC input line. The inverter powers the magnetron by way of a power transformer having a primary and a secondary. The current is sensed in the primary in order to change the switching frequency of the inverter. As the current in the primary will depend upon fluctuations in the AC input line voltage, sensing of the current in the primary may be used to sense variations in the voltage of the AC input line. Alternately, current in the secondary of the power transformer may be sensed and used to detect variations in the AC input line voltage. In either case, the sensed variations in AC input line voltage are used to change the inverter frequency. Because the secondary includes a series resonant tuned circuit, changes in the difference between the inverter switching frequency and the resonant frequency of the tuned circuit may be used to counteract AC input line variations and stabilize the magnetron output power.
REFERENCES:
patent: 3735237 (1973-05-01), Derby
patent: 4071812 (1978-01-01), Walker
patent: 4204266 (1980-05-01), Kammiller et al.
patent: 4281372 (1981-07-01), Kornrumpf
patent: 4318165 (1982-03-01), Kornrumpf et al.
patent: 4338658 (1982-07-01), Toy
patent: 4420668 (1983-12-01), Larson et al.
patent: 4504895 (1985-03-01), Steigerwald
patent: 4587604 (1986-05-01), Nerone
patent: 4593167 (1986-06-01), Nilssen
patent: 4620078 (1986-10-01), Smith
patent: 4648017 (1987-03-01), Nerone
patent: 4672159 (1987-06-01), Nilssen
patent: 4672528 (1987-06-01), Park et al.
patent: 4712170 (1987-12-01), Grace
Reising, Jr. Flavian
Smith, deceased Peter H.
General Electric Company
Houser H. Neil
Reams Radford M.
Salce Patrick R.
Sterrett Jeffrey
LandOfFree
Magnetron with frequency control for power regulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetron with frequency control for power regulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetron with frequency control for power regulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-815096