JPS6392262U - - Google Patents
Info
- Publication number
- JPS6392262U JPS6392262U JP18745886U JP18745886U JPS6392262U JP S6392262 U JPS6392262 U JP S6392262U JP 18745886 U JP18745886 U JP 18745886U JP 18745886 U JP18745886 U JP 18745886U JP S6392262 U JPS6392262 U JP S6392262U
- Authority
- JP
- Japan
- Prior art keywords
- current
- measured
- resistor
- charging current
- charging
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 claims 2
- 238000012544 monitoring process Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
第１図ないし第５図はこの考案の実施例に係り
、第１図はこの考案が適用された抵抗計のブロツ
ク線図、第２図は充電用電流が流される場合の電
流供給路の等価回路、第３図は上記第２図の動作
説明用特性図、第４図Ａは電流供給路の変形実施
例を示す回路図、第４図Ｂはその等価回路、第５
図Ａは電流供給路の他の変形実施例を示す回路図
、第５図Ｂはその等価回路、第６図は従来装置の
ブロツク線図である。
図中、３は被測定抵抗体、７は定電流発生部、
８は測定部、１１は基準電圧源、１２はコンパレ
ータ、１３は制御器、Ｃはコンデンサ、Ｉ１は測
定用電流、Ｉ２は充電用電流、Ｒｘは被測定抵抗
体の抵抗値、Ｓ５，Ｓ６はスイツチ、Ｖｓは基準
電圧、Ｖｘは被測定抵抗体に発生する電圧である
。
Figures 1 to 5 relate to embodiments of this invention, Figure 1 is a block diagram of a resistance meter to which this invention is applied, and Figure 2 is an equivalent current supply path when charging current is passed through it. 3 is a characteristic diagram for explaining the operation of FIG. 2 above, FIG. 4A is a circuit diagram showing a modified example of the current supply path, FIG. 4B is its equivalent circuit, and FIG.
Figure A is a circuit diagram showing another modified embodiment of the current supply path, Figure 5B is its equivalent circuit, and Figure 6 is a block diagram of a conventional device. In the figure, 3 is the resistor to be measured, 7 is the constant current generator,
8 is a measuring section, 11 is a reference voltage source, 12 is a comparator, 13 is a controller, C is a capacitor, I1 is a measuring current, I2 is a charging current, Rx is a resistance value of the resistor to be measured, S5 , S6 is a switch, Vs is a reference voltage, and Vx is a voltage generated in the resistor to be measured.
Claims (1)
抗体に一定レベルの直流電流を加え、上記被測定
抵抗体に発生する電圧を測定部にて測定しその抵
抗値を求める抵抗計において、 上記直流定電流源は、上記容量成分の充電用電
流と該充電用電流より低レベルの抵抗測定用電流
とを切り換え出力する電流源を備えてなり、 上記直流定電流源から上記被測定抵抗体に至る
電流路には、上記充電用電流が出力される場合に
上記電流路を並列電流路に切り換える複数の同一
定格でなるスイツチが設けられていることを特徴
とする抵抗計。 (2) 実用新案登録請求の範囲第１項において、
上記電流路に設けられたスイツチの電流容量は上
記測定用電流を下回らず、かつ、上記充電用電流
を越えない定格を有してなることを特徴とする抵
抗計。 (3) 実用新案登録請求の範囲第１項において、
上記測定部には、上記充電用電流により上記被測
定抵抗体に発生する電圧を所定の電圧と比較しそ
の一致時点で出力を発する電圧監視手段と、該電
圧監視手段からの上記出力を受け、上記充電用電
流を測定用電流に切り換えるとともに上記スイツ
チを駆動して上記並列電流路を解除させる制御手
段とを備えていることを特徴とする抵抗計。[Claims for Utility Model Registration] (1) A constant level of DC current is applied from a DC constant current source to a resistor to be measured including a capacitive component, and the voltage generated in the resistor to be measured is measured by a measuring section. In the ohmmeter for determining a resistance value, the DC constant current source is provided with a current source that switches between and outputs a charging current for the capacitance component and a resistance measurement current at a lower level than the charging current, and The current path from the current source to the resistor to be measured is provided with a plurality of switches having the same rating that switch the current path to a parallel current path when the charging current is output. resistance meter. (2) In paragraph 1 of the claims for utility model registration,
A resistance meter characterized in that the current capacity of the switch provided in the current path is rated not to be less than the measurement current and not to exceed the charging current. (3) In paragraph 1 of the claims for utility model registration,
The measuring section includes a voltage monitoring means that compares the voltage generated in the resistor to be measured by the charging current with a predetermined voltage and outputs an output at the time of coincidence, and receives the output from the voltage monitoring means, A resistance meter comprising control means for switching the charging current to a measuring current and driving the switch to cancel the parallel current path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986187458U JPH0524222Y2 (en) | 1986-12-05 | 1986-12-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986187458U JPH0524222Y2 (en) | 1986-12-05 | 1986-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6392262U true JPS6392262U (en) | 1988-06-15 |
| JPH0524222Y2 JPH0524222Y2 (en) | 1993-06-21 |
Family
ID=31137956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986187458U Expired - Lifetime JPH0524222Y2 (en) | 1986-12-05 | 1986-12-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0524222Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58124968A (en) * | 1982-01-21 | 1983-07-25 | Nec Corp | Measuring method of resistance |
-
1986
- 1986-12-05 JP JP1986187458U patent/JPH0524222Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58124968A (en) * | 1982-01-21 | 1983-07-25 | Nec Corp | Measuring method of resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0524222Y2 (en) | 1993-06-21 |
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