JPH041471U - - Google Patents
Info
- Publication number
- JPH041471U JPH041471U JP4143590U JP4143590U JPH041471U JP H041471 U JPH041471 U JP H041471U JP 4143590 U JP4143590 U JP 4143590U JP 4143590 U JP4143590 U JP 4143590U JP H041471 U JPH041471 U JP H041471U
- Authority
- JP
- Japan
- Prior art keywords
- core
- current
- direct current
- excitation characteristic
- coil
- 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
- 230000005284 excitation Effects 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Transformers For Measuring Instruments (AREA)
Description
第１図はこの考案の一実施例による直流電流測
定装置を示す構成図、第２図は他の実施例による
コアを示す斜視図、第３図および第４図はいずれ
も従来の直流電流測定装置を示す構成図である。
図において、１は直流電流、２はコア、２ａ，
２ｂはコア片、３はコイル、４１は交流電源であ
る。なお、各図中同一符号は同一または相当部分
を示す。
Fig. 1 is a configuration diagram showing a DC current measuring device according to one embodiment of this invention, Fig. 2 is a perspective view showing a core according to another embodiment, and Figs. 3 and 4 are both conventional DC current measuring devices. FIG. 2 is a configuration diagram showing the device. In the figure, 1 is a direct current, 2 is a core, 2a,
2b is a core piece, 3 is a coil, and 41 is an AC power source. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
るコア、このコアに巻回されたコイル、およびこ
のコイルに所定の交流電流を供給する交流電源を
備え、上記交流電流に基づく上記コアの励磁特性
が上記直流電流の変化に応じて変化することを利
用して上記励磁特性の検出出力から上記直流電流
を求める直流電流測定装置において、 上記コアを、相互に所定の圧力で接触する複数
のコア片の合成体で構成し、上記交流電源の出力
周波数を可変とすることにより、上記コアを音源
とする音声モニタ機能を付加させたことを特徴と
する直流電流測定装置。[Claims for Utility Model Registration] A core that forms a closed magnetic path interlinked with the DC current to be measured, a coil wound around this core, and an AC power supply that supplies a predetermined AC current to this coil, In a direct current measuring device that determines the direct current from the detection output of the excitation characteristic by utilizing the fact that the excitation characteristic of the core based on the alternating current changes in accordance with the change in the direct current, A DC current measurement device comprising a composite body of a plurality of core pieces that come into contact with each other under a pressure of 200 to 3000 nm, and by making the output frequency of the AC power source variable, an audio monitoring function using the core as a sound source is added. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4143590U JPH041471U (en) | 1990-04-18 | 1990-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4143590U JPH041471U (en) | 1990-04-18 | 1990-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH041471U true JPH041471U (en) | 1992-01-08 |
Family
ID=31552100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4143590U Pending JPH041471U (en) | 1990-04-18 | 1990-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH041471U (en) |
-
1990
- 1990-04-18 JP JP4143590U patent/JPH041471U/ja active Pending