JPH0243662U

JPH0243662U -

Info

Publication number: JPH0243662U
Application number: JP10262089U
Authority: JP
Priority date: 1989-08-31
Filing date: 1989-08-31
Publication date: 1990-03-26
Also published as: JPH0228460Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す電気的回路図
、第２図はその動作を説明するためのタイミング
図である。１１……被測定交流電圧Ｖ_ｘの入力端子、１２
……基準交流電圧ＶＲの入力端子、１３……後期
整流回路、１４……位相制御回路、１５……第１
積分回路、１７……第２積分回路、２０……零レ
ベル検出器、２２……論理制御回路、２３……表
示器、２４……極性識別回路。 FIG. 1 is an electrical circuit diagram showing an embodiment of the present invention, and FIG. 2 is a timing diagram for explaining its operation. 11...Input terminal for AC voltage to be measured _Vx , 12
... Input terminal of reference AC voltage VR, 13 ... Late rectifier circuit, 14 ... Phase control circuit, 15 ... First
Integrating circuit, 17... Second integrating circuit, 20... Zero level detector, 22... Logic control circuit, 23... Display, 24... Polarity identification circuit.

補正平１．９．１３実用新案登録請求の範囲を次のように補正する
。Amendment September 13, 1999 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】第１切換手段を介して被測定交流電圧または基
準交流電圧を導入し出力端に整流電圧を得る同期
整流回路と、積分コンデンサを含みそして第２切換手段を介
して導入された前記整流電圧を積分する第１積分
回路と、積分コンデンサを含み前記第１積分回路が積分
動作を中止して一定の積分出力電圧を保持してい
る間に第３切換手段を介して前記一定の積分出力
電圧を直接積分する第２積分回路と、前記第２積分回路の出力レベルを検出するレベ
ル検出器と、前記第１、第２、第３切換手段を制御する制御
回路と、前記制御回路に接続された計数表示回路を具備して成る交流電圧比測定回路。[Claims for Utility Model Registration] Synchronization in which the AC voltage to be measured or the reference AC voltage is introduced through the first switching means and a rectified voltage is obtained at the output end.
a rectifying circuit; a first integrating circuit including an integrating capacitor and integrating the rectified voltage introduced via the second switching means; a second integrating circuit that directly integrates the constant integrated output voltage via a third switching means while holding the output voltage ; a level detector that detects the output level of the second integrating circuit; An AC voltage ratio measuring circuit comprising: a control circuit for controlling first, second, and third switching means; and a count display circuit connected to the control circuit.

Claims

[Scope of utility model registration request]

a rectifier circuit that introduces the AC voltage to be measured or the reference AC voltage through the first switching means and obtains a rectified voltage at the output terminal; and an integrating capacitor, and integrates the rectified voltage introduced through the second switching means. a first integrating circuit, an integrating capacitor and a third integrating circuit;
a second integrating circuit that directly integrates the integrated output voltage of the first integrating circuit via a switching means; a level detector that detects the output level of the second integrating circuit; and the first, second, and third switching circuits. An AC voltage ratio measuring circuit comprising: a control circuit for controlling the means; and a count display circuit connected to the control circuit.