Title:
CONTROL CIRCUIT OF GAS DISCHARGE LAMP
Document Type and Number:
Japanese Patent JPH07169582
Kind Code:
A
Abstract:
PURPOSE: To reduce the dimension of the whole of a device so as to miniaturize a circuit by providing plural switching DC/DC converters, a bridge switching circuit and an electronic control unit. CONSTITUTION: A fly back DC/DC converter CC1 and a feed forward DC/DC converter CC2 are provided. Each converter CC1, CC2 has inputs 1, 2 respectively connected to a battery B for an automobile, which forms a direct current voltage source. Output of the converter CC2 is connected to an H-type bridge switching circuit HB, and the circuit HB has four MOSFET transistors M1-M4, which form a switch. An electronic control unit ECU drives each converter so that the converter CC1 is firstly operated by the generation of high voltage per each time of closing a switch of a gas discharge lamp L, and continuously, so that the converter CC2 is operated so as to generate the large power in spite of a low voltage.
Inventors:
ANDOREA NEPOTE
DARIO DEKURUTEI
DARIO DEKURUTEI
Application Number:
JP23489594A
Publication Date:
July 04, 1995
Filing Date:
September 29, 1994
Export Citation:
Assignee:
MARELLI AUTRONICA
International Classes:
H05B41/288; H05B41/38; H05B41/282; (IPC1-7): H05B41/29
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)