JPH0393775U - - Google Patents

Info

Publication number
JPH0393775U
JPH0393775U JP151290U JP151290U JPH0393775U JP H0393775 U JPH0393775 U JP H0393775U JP 151290 U JP151290 U JP 151290U JP 151290 U JP151290 U JP 151290U JP H0393775 U JPH0393775 U JP H0393775U
Authority
JP
Japan
Prior art keywords
output
effective value
circuit
adder circuit
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP151290U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP151290U priority Critical patent/JPH0393775U/ja
Publication of JPH0393775U publication Critical patent/JPH0393775U/ja
Pending legal-status Critical Current

Links

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  • Measurement Of Current Or Voltage (AREA)

Description

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

第１図はこの考案の実施例を示すブロツク図、
第２図は従来の交流電圧測定器を示すブロツク図
である。 Figure 1 is a block diagram showing an embodiment of this invention.
FIG. 2 is a block diagram showing a conventional AC voltage measuring device.

Claims (1)

【実用新案登録請求の範囲】 入力電圧が供給され、その直流成分を除去し、
交流成分を反転する反転増幅器と、 その反転増幅器の出力と上記入力電圧とを加算
して直流成分のみを出力する加算回路と、 上記入力電圧が供給され、その交流成分のみを
その実効電圧に比例した直流電圧に変換する実効
値回路と、 その実効値回路の出力と上記加算回路の出力と
が切替え供給され、アナログ信号をデジタル信号
に変換するＡＤ変換器と、 そのＡＤ変換器の出力中の上記加算回路の出力
と対応した出力と、上記実効値回路の出力と対応
した出力との２乗和をとり、その和を開平演算す
る演算器と、 その演算器の演算結果を表示する表示器と、 を有する交流電圧測定器。[Claims for Utility Model Registration] An input voltage is supplied, its DC component is removed,
an inverting amplifier that inverts the alternating current component; an adder circuit that adds the output of the inverting amplifier and the above input voltage and outputs only the direct current component; an effective value circuit that converts the output into a DC voltage, an AD converter that converts an analog signal into a digital signal, to which the output of the effective value circuit and the output of the adder circuit are switched and supplied; An arithmetic unit that takes the square sum of the output corresponding to the output of the above-mentioned adder circuit and the output that corresponds to the output of the above-mentioned effective value circuit, and calculates the square root of the sum, and a display that displays the calculation result of the arithmetic unit. An AC voltage measuring instrument having the following.
JP151290U 1990-01-10 1990-01-10 Pending JPH0393775U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP151290U JPH0393775U (en) 1990-01-10 1990-01-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP151290U JPH0393775U (en) 1990-01-10 1990-01-10

Publications (1)

Publication Number Publication Date
JPH0393775U true JPH0393775U (en) 1991-09-25

Family

ID=31505416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP151290U Pending JPH0393775U (en) 1990-01-10 1990-01-10

Country Status (1)

Country Link
JP (1) JPH0393775U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7529479B2 (en) 2005-07-28 2009-05-05 Ricoh Company, Ltd. Camera viewer device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7529479B2 (en) 2005-07-28 2009-05-05 Ricoh Company, Ltd. Camera viewer device

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