JPH01117572U - - Google Patents
Info
- Publication number
- JPH01117572U JPH01117572U JP1368188U JP1368188U JPH01117572U JP H01117572 U JPH01117572 U JP H01117572U JP 1368188 U JP1368188 U JP 1368188U JP 1368188 U JP1368188 U JP 1368188U JP H01117572 U JPH01117572 U JP H01117572U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- resistor
- switch
- input
- diode
- 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
Links
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案に係る電流検出器のレンジ切り
換え回路の一実施例を示す構成図、第２図は本考
案の他の実施例を示す構成図、第３図は従来の電
流検出器のレンジ切り換え回路の構成を示す構成
図である。
１０……受光素子、１１……増幅器、１２……
第１の抵抗、１３，１９，２０，２１，２２，１
５２，１６２，１７２……スイツチ、１４……ダ
イオード、１８……差動増幅器、１５１，１６１
，１７１……抵抗。
Fig. 1 is a block diagram showing one embodiment of the range switching circuit of a current detector according to the present invention, Fig. 2 is a block diagram showing another embodiment of the present invention, and Fig. 3 is a block diagram of a conventional current detector. FIG. 2 is a configuration diagram showing the configuration of a range switching circuit. 10... Light receiving element, 11... Amplifier, 12...
First resistance, 13, 19, 20, 21, 22, 1
52,162,172...Switch, 14...Diode, 18...Differential amplifier, 151,161
, 171...Resistance.
Claims (1)
の増幅器の入力と出力の間に接続される第１の抵
抗と、前記増幅器の出力にその一端が接続された
少なくとも１つの抵抗とスイツチの直列回路と、
この直列回路の他端がその一端に接続され他端が
前記増幅器の入力に接続されるダイオードと、こ
のダイオードの両端電圧を選択的にゼロにするス
イツチと、前記第１の抵抗または抵抗の両端電圧
を検出する差動増幅器とからなる事を特徴とする
電流検出器のレンジ切り換え回路。 A series circuit consisting of an amplifier to which a current signal to be measured is input, a first resistor connected between the input and output of the amplifier, and at least one resistor and a switch, one end of which is connected to the output of the amplifier. and,
a diode, the other end of which is connected to one end of the series circuit and the other end is connected to the input of the amplifier; a switch that selectively zeros the voltage across the diode; and a first resistor or a switch across the resistor. A current detector range switching circuit characterized by comprising a differential amplifier that detects voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1368188U JPH01117572U (en) | 1988-02-04 | 1988-02-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1368188U JPH01117572U (en) | 1988-02-04 | 1988-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01117572U true JPH01117572U (en) | 1989-08-08 |
Family
ID=31224194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1368188U Pending JPH01117572U (en) | 1988-02-04 | 1988-02-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01117572U (en) |
-
1988
- 1988-02-04 JP JP1368188U patent/JPH01117572U/ja active Pending
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