JPH0433115U - - Google Patents
Info
- Publication number
- JPH0433115U JPH0433115U JP7291990U JP7291990U JPH0433115U JP H0433115 U JPH0433115 U JP H0433115U JP 7291990 U JP7291990 U JP 7291990U JP 7291990 U JP7291990 U JP 7291990U JP H0433115 U JPH0433115 U JP H0433115U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- operational amplifier
- constant current
- potential difference
- load resistor
- 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
- 238000005259 measurement Methods 0.000 description 2
Description
第１図は本考案の１実施例に係る定電流回路の
構成図であり、第２図は従来の定電流回路の構成
図であり、第３図は定電流回路を用いた計測回路
の構成図であり、第４図は従来の計測回路の構成
図である。
１０……定電圧ダイオード、１１，１２，１３
……オペアンプ。
FIG. 1 is a configuration diagram of a constant current circuit according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a conventional constant current circuit, and FIG. 3 is a configuration diagram of a measurement circuit using a constant current circuit. FIG. 4 is a configuration diagram of a conventional measurement circuit. 10... Constant voltage diode, 11, 12, 13
...Op amp.
Claims (1)
の負荷抵抗電圧に対し定電流を出力するための電
位差を作るオペアンプ２と、 以上２つのオペアンプに基準電圧を与えるオペ
アンプ３とから構成される定電流回路において、 前記オペアンプ２の出力に大きな負荷抵抗電圧
が発生した場合にその電位差をなくす定電圧ダイ
オードを設けたことを特徴とする定電流回路。[Claims for Utility Model Registration] An operational amplifier 1 that inputs the voltage of a load resistor, an operational amplifier 2 that creates a potential difference for outputting a constant current with respect to the voltage of the load resistor, and an operational amplifier 3 that provides a reference voltage to the above two operational amplifiers. A constant current circuit comprising: a constant voltage diode that eliminates a potential difference when a large load resistance voltage occurs at the output of the operational amplifier 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7291990U JPH0433115U (en) | 1990-07-11 | 1990-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7291990U JPH0433115U (en) | 1990-07-11 | 1990-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0433115U true JPH0433115U (en) | 1992-03-18 |
Family
ID=31611288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7291990U Pending JPH0433115U (en) | 1990-07-11 | 1990-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433115U (en) |
-
1990
- 1990-07-11 JP JP7291990U patent/JPH0433115U/ja active Pending