Microwave oven power supply and oscillator therefor

Details Microwave oven power supply and oscillator therefor Microwave oven power supply and oscillator therefor

1975-07-16

1977-05-10

Grimley, Arthur T.

Electric heating

Metal heating

Of cylinders

323 18, H02B 906

Patent

active

040230040

ABSTRACT:
The specification presents an improved microwave oven power supply of the type which contains a transformer having a primary and high voltage secondary winding, a rectifier and capacitor combination connecting the high voltage secondary winding to a microwave magnetron and a control switching means, such as a Triac, is included in series circuit with the transformer primary to control current through the primary. In combination therewith a pulse generator is employed to control the operation of the switching means; providing voltage pulses to the switching means essentially to turn the switching means on and off for predetermined intervals. The improvement provides in the combination a pulse generator that contains a single control member accessible to the user, which varies or adjusts the width or duration of the pulses applied to the control switch means and concurrently varies or adjusts the time base or time period in which such pulses reoccur, suitably expanding the pulse duration concurrently with expansion of the time base, and vice versa. In an additional novel combination a synchronizer and an AND gate are connected in circuit with the pulse generator so that the concurrence of a synchronizing pulse from the synchronizer and a control pulse from the pulse generator must coincide in time before the Triac control switch means may be started.

REFERENCES:
patent: 3633095 (1972-01-01), Hood
patent: 3735237 (1973-05-01), Derby
patent: 3780252 (1973-12-01), Crapuchettes
patent: 3939319 (1976-02-01), Tamano et al.

Affiliated with

Also associated with

Rating

Microwave oven power supply and oscillator therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microwave oven power supply and oscillator therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microwave oven power supply and oscillator therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1984699