JPS6214385U - - Google Patents
Info
- Publication number
- JPS6214385U JPS6214385U JP10628485U JP10628485U JPS6214385U JP S6214385 U JPS6214385 U JP S6214385U JP 10628485 U JP10628485 U JP 10628485U JP 10628485 U JP10628485 U JP 10628485U JP S6214385 U JPS6214385 U JP S6214385U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- high voltage
- conversion circuit
- logarithmic conversion
- output
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
第１図は本考案に係る絶縁抵抗計の一実施例を
示す回路図、第２図は第１図装置の動作を説明す
るための図である。
ＢＵ……電池、ＳＷ１〜ＳＷ３……スイツチ、
ＨＶ……直流高電圧発生回路、ＬＯＧ……対数変
換回路、Ｃ……コンデンサ、ＯＰ……演算増幅器
。
FIG. 1 is a circuit diagram showing an embodiment of an insulation resistance meter according to the present invention, and FIG. 2 is a diagram for explaining the operation of the device shown in FIG. 1. BU...Battery, SW1~SW3...Switch,
HV...DC high voltage generation circuit, LOG...Logarithmic conversion circuit, C...Capacitor, OP...Operation amplifier.
Claims (1)
スイツチ、前記電池出力が第１のスイツチを介し
て加えられ直流の高電圧を発生する直流高電圧発
生回路、被測定の絶縁抵抗体に前記直流高電圧発
生回路の出力が加えられることによりこの絶縁抵
抗体に流れる電流を対数変換する対数変換回路、
この対数変換回路の出力側に接続され前記第１の
スイツチのオン、オフ動作に関連してオン、オフ
する第３のスイツチ、この第３のスイツチの出力
側に接続され第３のスイツチがオフのとき前記対
数変換回路を通つた信号をホールドするコンデン
サ、測定時およびホールド時において第２のスイ
ツチを介して与えられる前記電池の出力を電源と
し前記コンデンサの出力を増幅する演算増幅器、
およびこの演算増幅器で駆動される指示計よりな
る絶縁抵抗計。 a first switch that turns on and off the battery output as a power source; a DC high voltage generation circuit that generates a DC high voltage by applying the battery output via the first switch; A logarithmic conversion circuit that logarithmically converts the current flowing through this insulation resistor by applying the output of the high voltage generation circuit;
A third switch connected to the output side of the logarithmic conversion circuit and turned on and off in connection with the on and off operations of the first switch; and a third switch connected to the output side of the third switch that turns off the third switch a capacitor that holds the signal that has passed through the logarithmic conversion circuit when
and an insulation resistance meter consisting of an indicator driven by this operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10628485U JPS6214385U (en) | 1985-07-11 | 1985-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10628485U JPS6214385U (en) | 1985-07-11 | 1985-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6214385U true JPS6214385U (en) | 1987-01-28 |
Family
ID=30981496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10628485U Pending JPS6214385U (en) | 1985-07-11 | 1985-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6214385U (en) |
-
1985
- 1985-07-11 JP JP10628485U patent/JPS6214385U/ja active Pending