DRIVING CIRCUIT FOR INVERTER MICROWAVE OVEN

PURPOSE:To provide the driving circuit of an inverter microwave oven which has a high output and high efficiency and is inexpensive and compact by using a low-voltage DC power source as its power source. CONSTITUTION:An inverter circuit 2 having two switching element groups 8a, 8b switching the DC f...

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Bibliographische Detailangaben
Hauptverfasser:	OKAMOTO MITSUHISA, MINAMINO MITSUHARU, KODAMA HIROICHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BLASTING CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION HEATING LIGHTING MECHANICAL ENGINEERING OTHER DOMESTIC STOVES OR RANGES RANGES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide the driving circuit of an inverter microwave oven which has a high output and high efficiency and is inexpensive and compact by using a low-voltage DC power source as its power source. CONSTITUTION:An inverter circuit 2 having two switching element groups 8a, 8b switching the DC fed from a DC power source 1 and control means 9a, 9b, 10 turning two switching element groups 8a, 8b off concurrently and turning them on in turn at the same duty cycle is provided. A voltage doubler rectifier 4 connected to a booster transformer 3 and feeding the electric power to a magnetron 5 via a capacitor 7 is provided. The leakage inductance of the booster transformer 3, the capacity value and circuit resistance of the capacitor 7 of the voltage doubler rectifier circuit 4, or the duty cycle of the switching element groups 8a, 8b are adjusted so that 1/2 of the frequency of the current wave-form flowing in the switching element groups 8a, 8b is made equal to the above duty cycle.