Title:
INVERTER DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JP3268672
Kind Code:
B2
Abstract:
PURPOSE: To provide stable start-up in a simple constitution at the time of starting.
CONSTITUTION: In an oscillation circuit 22 a second terminal and a third terminal are internally connected with an oscillation stop condition to set an output at a low level. The second terminal is connected to resistances 35, 36 through a diode 43. A capacitor 23 is charged, while half a voltage is charged to a capacitor 25. When an oscillation circuit 22 is started to output high levels and low levels alternately, and an SCR 39 is put on through a diode 41 to get a transistor 45 on. By a positive output of the oscillation circuit, a current flows from the second terminal to a pulse transformer 24, and by a negative output, the current flows from the pulse transformer 24 to the second terminal. Since the capacitor 25 is at a stationary condition voltage at the time of starting, a trigger signal of a correct amplitude is given from the pulse transformer to a switching element of an inverter to get on and off alternately necessarily, thereby possibility of deflected magnatization of the pulse transformer is eliminated.
Inventors:
Makoto Noda
Ryoichi Uda
Ryoichi Uda
Application Number:
JP33879792A
Publication Date:
March 25, 2002
Filing Date:
December 18, 1992
Export Citation:
Assignee:
LECIP Co., Ltd.
International Classes:
H05B41/18; H05B41/24; (IPC1-7): H05B41/24; H05B41/18
Attorney, Agent or Firm:
Kusano Taku (1 person outside)