JPH0468481U

JPH0468481U -

Info

Publication number: JPH0468481U
Application number: JP11132890U
Authority: JP
Priority date: 1990-10-23
Filing date: 1990-10-23
Publication date: 1992-06-17

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案による定電圧電源回路の一例
を示す電気回路図、第２図は同回路の寿命表示動
作を説明するための電圧波形図、第３図は同装置
の外観の一例を示す概略的な斜視図、第４図は従
来の定電圧電源回路の構成を示す電気回路図であ
る。３，４３……整流回路、４……平滑コンデンサ
、３５……動作表示用発光素子、４４……寿命検
出用平滑コンデンサ、５４……寿命表示用発光素
子、５６……電圧検出回路、ｘ……定電圧電源回
路、Ｙ……寿命表示回路、ｖ１……平滑電圧、ｖ
４……検出電圧。 Figure 1 is an electric circuit diagram showing an example of a constant voltage power supply circuit according to this invention, Figure 2 is a voltage waveform diagram to explain the life display operation of the circuit, and Figure 3 is an example of the external appearance of the device. FIG. 4, a schematic perspective view, is an electric circuit diagram showing the configuration of a conventional constant voltage power supply circuit. 3, 43... Rectifier circuit, 4... Smoothing capacitor, 35... Light emitting element for operation display, 44... Smoothing capacitor for life detection, 54... Light emitting element for life display, 56... Voltage detection circuit, x... ... Constant voltage power supply circuit, Y ... Lifespan display circuit, v1 ... Smoothed voltage, v
4...Detection voltage.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

交流を整流回路で整流して得られた整流出力を
平滑する平滑コンデンサおよび動作表示用発光素
子を有する定電圧電源回路と、この定電圧電源回
路に並列接続された寿命表示回路とを具備し、こ
の寿命表示回路は上記交流の整流回路と、その整
流出力を平滑するとともに上記平滑コンデンサと
等価な特性を有する寿命検出用平滑コンデンサと
、この寿命検出用平滑コンデンサで平滑された電
圧が所定の基準電圧以下であることを検出する電
圧検出回路と、この電圧検出回路の検出電圧に応
じて輝度が可変に制御される寿命表示用発光素子
とを備え、この寿命表示用発光素子と動作表示用
発光素子の各輝度がほぼ等しいことを視認して、
上記定電圧電源回路の寿命を判定するように構成
したことを特徴とする寿命表示機能付き電源装置
。 A constant voltage power supply circuit having a smoothing capacitor for smoothing the rectified output obtained by rectifying alternating current with a rectifier circuit and a light emitting element for indicating operation, and a life display circuit connected in parallel to the constant voltage power supply circuit, This lifespan display circuit includes the above AC rectifier circuit, a lifespan detection smoothing capacitor that smoothes the rectified output and has characteristics equivalent to the above smoothing capacitor, and a voltage smoothed by this lifespan detection smoothing capacitor that is set to a predetermined standard. It is equipped with a voltage detection circuit that detects that the voltage is below the voltage, and a lifespan display light emitting element whose brightness is variably controlled according to the detected voltage of this voltage detection circuit. Visually confirm that the brightness of each element is almost equal,
A power supply device with a lifespan display function, characterized in that it is configured to determine the lifespan of the constant voltage power supply circuit.