JPS5972561U - measuring device - Google Patents

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 drawings]

第１図は本考案装置の一実施例の接続図、第２図は従来
装置の一例の接続図、第３図は本考案装置の他の実施例
の接続図である。 Ｒ□・・・・・・直列抵抗器、Ｒ２−Ｒ５・・・・・・
抵抗器、Ｓ２〜Ｓ５・・・・・・レンジ切換スイッチ、
Ｕｌ・・・・・・バッファアンプ、Ｕ２・・・・−・演
算増幅器。FIG. 1 is a connection diagram of one embodiment of the device of the present invention, FIG. 2 is a connection diagram of an example of a conventional device, and FIG. 3 is a connection diagram of another embodiment of the device of the present invention. R□...Series resistor, R2-R5...
Resistor, S2-S5...range selection switch,
Ul: buffer amplifier, U2: operational amplifier.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電圧測定モードと抵抗測定モードを有する測定装置にお
いて、電圧測定モードにおいては被測定電圧源を直列抵
抗器を介してバッファアンプの入力端子に接続すると共
に、前記直列抵抗器の出力側とコモン間に半導体スイッ
チを使用したレンジ切換スイッチと抵抗器よりなる複数
個の直列回路を接続し、抵抗測定モードにおいては基準
電圧源を前記直列抵抗器を介してその入出力端子間に被
測定抵抗が接続される演算増幅器の入力端子に接続する
と共に、前記レンジ切換スイッチと抵抗器よりなる直列
回路を前記直列抵抗に並列に接続してなる測定装置。In a measuring device having a voltage measurement mode and a resistance measurement mode, in the voltage measurement mode, the voltage source to be measured is connected to the input terminal of the buffer amplifier via a series resistor, and a connection is made between the output side of the series resistor and the common. A series circuit consisting of a range selector switch using a semiconductor switch and a resistor is connected, and in the resistance measurement mode, the resistance to be measured is connected between the input and output terminals of the reference voltage source via the series resistor. A measuring device is connected to an input terminal of an operational amplifier, and a series circuit comprising the range selector switch and a resistor is connected in parallel to the series resistor.