POWER SUPPLY UNIT AND LIGHTING APPARATUS

To provide a power supply unit that can control the wave height value appropriately according to the load.SOLUTION: A conversion circuit 23 has a first switching element Q1 and converts input power by switching the first switching element Q1 to supply the light source 14. The control unit 24 determi...

Full description

Saved in:
Bibliographic Details
Main Author ISHIKITA TORU
Format Patent
LanguageEnglish
Japanese
Published 26.01.2023
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary:To provide a power supply unit that can control the wave height value appropriately according to the load.SOLUTION: A conversion circuit 23 has a first switching element Q1 and converts input power by switching the first switching element Q1 to supply the light source 14. The control unit 24 determines the duty ratio of switching of the first switching element Q1 and controls the wave height according to the maximum duty ratio of switching of the first switching element Q1, which is preset according to the light source 14, and the peak current of the output current of the conversion circuit 23.SELECTED DRAWING: Figure 1 【課題】負荷に応じた適切な波高値制御ができる電源装置を提供する。【解決手段】変換回路２３は、第１スイッチング素子Ｑ１を有し、第１スイッチング素子Ｑ１のスイッチングにより入力電力を変換し、光源１４に供給する。制御部２４は、光源１４に応じて予め設定されている第１スイッチング素子Ｑ１のスイッチングの最大デューティ比と、変換回路２３の出力電流のピーク電流と、に応じて、第１スイッチング素子Ｑ１のスイッチングのデューティ比を決定し、波高値制御する。【選択図】図１
Bibliography:Application Number: JP20210117263