JPS59127170U

JPS59127170U - Indication error compensation circuit

Info

Publication number: JPS59127170U
Application number: JP2093783U
Authority: JP
Inventors: 田原　昇
Original assignee: 日本電気株式会社
Priority date: 1983-02-16
Filing date: 1983-02-16
Publication date: 1984-08-27

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は本考案の第一の実施例の回路図、第２図はこの
実施例の特性図、第３図は検波器型高周波電力計の入力
に対して補償回路がない場合と第１図の実施例を用いた
場合との指示計器入力を比較した特性図、第４図は本考
案の第二の実施例の回路図、第５図は第二の実施例の特
性図である。１・・・・・・入力端子、２・・・・・・折れ線近似回
路、３゜５・・・・・・帰還抵抗、４・・・・・・演算
増幅器、６・・・・・・指示計器。FIG. 1 is a circuit diagram of the first embodiment of the present invention, FIG. 2 is a characteristic diagram of this embodiment, and FIG. FIG. 4 is a circuit diagram of the second embodiment of the present invention, and FIG. 5 is a characteristic diagram of the second embodiment. 1... Input terminal, 2... Broken line approximation circuit, 3゜5... Feedback resistor, 4... Operational amplifier, 6... Indicating instrument.

Claims

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

（１）直流電圧を増幅する演算増幅器と、この演算増幅
器の出力電圧をその入力端子に負帰還させる負帰還抵抗
器と、この負帰還抵抗器に並列に接続しである折れ線近
似回路とを備え、この折れ線近似回路はダイオードと抵
抗器との直列回路を少な（とも１個有し、前記ダイオー
ドには順方向電圧が加えられることを特徴とする指示誤
差補償回路。(1) Equipped with an operational amplifier that amplifies a DC voltage, a negative feedback resistor that negatively feeds back the output voltage of the operational amplifier to its input terminal, and a polygonal line approximation circuit that is connected in parallel to the negative feedback resistor. , an indication error compensation circuit characterized in that this polygonal line approximation circuit has a small number (one in series) of a diode and a resistor, and a forward voltage is applied to the diode.

（２）前項記載の指示誤差補償回路において、前記直列
回路は第１番目から第ｎ（ｎは２以上の整数）番目まで
のｎ個あり、第１番目の前記直列回路は前記負帰還抵抗
器に並列に接続してあり、第ｉ（ｉは２以上ｎ以下の整
数）番目の前記直列回路は第（ｉ−１）番目の前記直列
回路の前記抵抗器に並列に接続しであることを特徴とす
る指示誤差補償回路。(2) In the indication error compensation circuit described in the previous section, there are n series circuits from the first to the nth (n is an integer of 2 or more), and the first series circuit is the negative feedback resistor. The i-th (i is an integer from 2 to n) series circuit is connected in parallel to the resistor of the (i-1)-th series circuit. Features an indication error compensation circuit.