Title:
POWER SOURCE
Document Type and Number:
Japanese Patent JPS6051464
Kind Code:
A
Abstract:
PURPOSE:To reduce a circuit loss by connecting a rectifier through a capacitor as a current limiting element from a circuit which has a capacitor charged by a high frequency voltage and an isolating diode to an inverter. CONSTITUTION:Outputs from a rectifier 2 and a filter 3 is supplied through an auxiliary power source 4 to a transistor inverter 5, thereby firing a discharge lamp 6 or the like. The power source 4 is composed of a series circuit of an auxiliary power supplying capacitor 41 and an isolating diode 42, diodes 43, 44 and a capacitor 44 as a current limiting element, the capacitor 41 is charged by the primary winding voltage of a transformer 51 at every OFF of the transistor 52, and then discharged through the diode 42 at every half-cycle of the power source frequency to the inverter 5. Accordingly, the capacitor is used as the current limiting element to reduce the loss, and the transient voltage to the diode 42 can be prevented.
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Inventors:
NOBUHARA MOCHISUMI
YUHARA KOUHEI
AOIKE MINAKI
YUHARA KOUHEI
AOIKE MINAKI
Application Number:
JP15632583A
Publication Date:
March 22, 1985
Filing Date:
August 29, 1983
Export Citation:
Assignee:
TOSHIBA ELECTRIC EQUIP
International Classes:
H02J3/00; H02M7/44; H02M7/537; H05B41/282; (IPC1-7): H02J3/00; H02M7/44
Domestic Patent References:
| JPS6051463A | 1985-03-22 | |||
| JPS56133987A | 1981-10-20 | |||
| JPS5649678A | 1981-05-06 | |||
| JPS5649682A | 1981-05-06 | |||
| JPS5663797A | 1981-05-30 |
Attorney, Agent or Firm:
Tatsuo Ito