H - Electricity – 05 – B
Patent
H - Electricity
05
B
353/17, 355/27
H05B 39/00 (2006.01) H03B 9/10 (2006.01) H05B 6/66 (2006.01) H05B 41/14 (2006.01)
Patent
CA 1111967
ABSTRACT A magnetron energizing circuit preferably uses two transformers of the high leakage reactance type having isolated secondaries with an end terminal of each secondary connection to a common point which is at ground potential. The secondaries are connected to series condensers in two loops which provide leading current flowing in the secondaries at all times while both are connected in the circuit to produce saturation in the respective cores of the secondaries whereby to achieve substantially constant current and good regulation for variations in the primary voltage. A single magnetron is served by the circuit and variations in the loading of the magnetron are also compensated for by virtue of the substantially constant current circuit. A modified form is described which uses a single transformer having two isolated secondaries. The secondaries are connected in opposite phase with respect to the respective capacitors which they serve to charge to obtain a full wave doubler operation when the transformers are both in circuit but with low peak current. The combined secondaries and condensers are connected through a rectifier or rectifiers to a magnetron used for heating purposes, the magnetron participating in the overall operation of the circuit and being of the continuous wave pulsed type so as to achieve heating in cooking ovens or the like. Disconnecting one of the transformers from the circuit converts the circuit into a lower power, but efficient half wave voltage doubler circuit. Isolating rectifiers prevent circulating currents.
311456
Feinberg Albert E.
Woo Kenneth
Advance Transformer Company
Borden Ladner Gervais Llp
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