Title:
INVERTER CIRCUIT FOR INCANDESCENT LAMP
Document Type and Number:
Japanese Patent JPH01136573
Kind Code:
A
Abstract:
PURPOSE:To facilitate control of output power, by providing a controlling circuit for varying timing of a trigger to be applied onto a transistor. CONSTITUTION:An inverter circuit for incandescent light comprises a full-wave rectifier 2 connected to an AC power source 1, a capacitor 3, a control circuit 6 for varying timing of trigger to be applied onto a trigger transistor(Tr) 14 from a trigger circuit 10 and a half-bridge comprised of Tr13, 14 and an output transformer 17, and feeds power through the transformer 17 to an incandescent light 20. The control circuit 6 varies timing of trigger to be applied onto Tr14 so as to very the oscillation interval of Tr14. Since it has no effect on the oscillating state of Tr, it causes no erroneous operation.
Inventors:
NAKAZAWA IKUO
Application Number:
JP29410887A
Publication Date:
May 29, 1989
Filing Date:
November 24, 1987
Export Citation:
Assignee:
HITACHI LIGHTING LTD
International Classes:
H02M7/537; H05B39/04; (IPC1-7): H02M7/537; H05B39/04
Attorney, Agent or Firm:
Katsuo Ogawa (1 person outside)