Title:
【発明の名称】電力供給のフェードアウトスイッチング方法およびフェードアウトスイッチング装置
Document Type and Number:
Japanese Patent JP3335136
Kind Code:
B2
Abstract:
A method of controlling a supply of electric power to an electric load and a circuit thereof are disclosed. The circuit includes a control voltage generating part means for generating a control voltage which decreases over time, an amassing part for amassing the control voltage upon a voltage signal increasing over time and discharging the amassed voltage nearby a zero crossing point of AC voltage from the AC source in order to generate a saw-tooth wave, a trigger signal generating part for generating trigger signals based on the saw-tooth wave, wherein the phase angle of the trigger signals varies depending on the saw-tooth wave, and a switch part for supplying electric energy from the AC power source to the electric load in response to the trigger signals. Therefore, electric power being supplied to an electric load fades out.
Inventors:
Akiaki
Application Number:
JP12286599A
Publication Date:
October 15, 2002
Filing Date:
April 28, 1999
Export Citation:
Assignee:
Akiaki
International Classes:
H02M5/257; H05B37/02; H05B39/08; (IPC1-7): H05B37/02
Domestic Patent References:
| JP8288089A |
Attorney, Agent or Firm:
Tadashi Hagino (4 outside)