Electric lamp and discharge devices: systems – Condenser in the supply circuit – Inductance in the condenser circuit
Patent
1988-07-22
1990-05-08
Groody, James J.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Inductance in the condenser circuit
315DIG5, 315225, 315194, 315176, 315307, 315246, H05B 4116
Patent
active
049241508
ABSTRACT:
A full-bridge transistor inverter is connected at its DC supply-side with an energy-storing capacitor. The inverter's output terminals are connected in series between a source of AC voltage and a load; which load may be an electric motor, a fluorescent lighting system, etc. By controllably switching the transistors of the inverter ON and OFF in synchronism with the frequency of the AC voltage, effective control of the flow of power between the AC source and the load is achieved. DC voltage on the energy-storing capacitor is obtained from the AC source by way of the timing of the switching action of the inverter.
Hence, in contrast with the ordinary situation where an inverter is supplied with net power from its source of DC voltage and where this net power is then supplied to a load connected with the inverter's output, the present invention relates to a situation where no net power is supplied to the inverter from its source of DC voltage and where no net power is supplied from the inverter's output. Instead, the inverter is used for controlling the waveform of the alternating current flowing through it by way of its output terminals.
REFERENCES:
patent: 3525015 (1970-08-01), Kita
patent: 4042856 (1977-08-01), Steigerwald
patent: 4352045 (1982-09-01), Widmayer
patent: 4528457 (1985-09-01), Keefe et al.
patent: 4651060 (1987-03-01), Clark
patent: 4700113 (1987-10-01), Stupp et al.
patent: 4791338 (1988-12-01), Dean et al.
Groody James J.
Powell Mark P.
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