JPS6291266U - - Google Patents
Info
- Publication number
- JPS6291266U JPS6291266U JP18241185U JP18241185U JPS6291266U JP S6291266 U JPS6291266 U JP S6291266U JP 18241185 U JP18241185 U JP 18241185U JP 18241185 U JP18241185 U JP 18241185U JP S6291266 U JPS6291266 U JP S6291266U
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- counter
- voltage
- output value
- digital
- 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 2
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図はこの考案によるＤ／Ｖメータの構成図
、第２図は従来のＤ／Ｖメータの構成図、第３図
は第２図に示したＤ／Ｖメータのタイミングチヤ
ート図である。
図中において、６はカウンタ、９は表示器、２
０は基準電圧設定器、２１は比較器である。な
お、図中同一あるいは相当部分には同一符号を付
して示してある。
FIG. 1 is a block diagram of a D/V meter according to this invention, FIG. 2 is a block diagram of a conventional D/V meter, and FIG. 3 is a timing chart of the D/V meter shown in FIG. In the figure, 6 is a counter, 9 is a display, 2
0 is a reference voltage setter, and 21 is a comparator. It should be noted that the same or corresponding parts in the figures are indicated by the same reference numerals.
Claims (1)
る制御信号発生手段と、所定周期のクロツクパル
スを発生する発振器と、上記制御信号発生手段か
らの制御信号により上記発振器のクロツクパルス
を計数するカウンタと、上記制御信号発生手段か
らの表示コントロール信号により上記カウンタの
出力値を表示する表示手段と、上記カウンタの出
力値をアナログ値に変換するデイジタル／アナロ
グコンバータと、このデイジタル／アナログコン
バータの出力電圧（階段波ランプ電圧）を被測定
用信号電圧と比較し、その比較結果に対応する信
号を上記制御信号発生手段に出力する比較器Ｉと
を備え、上記デイジタル／アナログコンバータの
出力電圧と被測定用信号電圧とが一致したときに
上記カウンタの出力値を表示し得るようにしたデ
イジタルボルトメータにおいて、基準電圧を設定
する設定回路と、上記設定回路の出力値と上記カ
ウンタの出力値とを比較し、その比較結果に対応
する信号を上記表示手段に加える比較器とを設け
たことを特徴とするデイジタルボルトメータ。 A control signal generating means for generating a plurality of control signals such as display control, an oscillator for generating clock pulses of a predetermined period, a counter for counting clock pulses of the oscillator based on a control signal from the control signal generating means, and the control signal for the control signal. A display means for displaying the output value of the counter in response to a display control signal from the generation means, a digital/analog converter for converting the output value of the counter into an analog value, and an output voltage (step wave ramp voltage) of the digital/analog converter. ) with the signal voltage to be measured and outputs a signal corresponding to the comparison result to the control signal generating means, the output voltage of the digital/analog converter and the signal voltage to be measured are In a digital voltmeter that is capable of displaying the output value of the counter when they match, a setting circuit for setting the reference voltage is used, and the output value of the setting circuit is compared with the output value of the counter, and the comparison result is and a comparator for applying a signal corresponding to the above to the display means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18241185U JPS6291266U (en) | 1985-11-27 | 1985-11-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18241185U JPS6291266U (en) | 1985-11-27 | 1985-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6291266U true JPS6291266U (en) | 1987-06-11 |
Family
ID=31128186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18241185U Pending JPS6291266U (en) | 1985-11-27 | 1985-11-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6291266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7604177B2 (en) | 2004-05-14 | 2009-10-20 | Oki Electric Industry Co., Ltd. | Contactless data carrier, interrogator, contactless data carrier system, and method of acquiring data |
-
1985
- 1985-11-27 JP JP18241185U patent/JPS6291266U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7604177B2 (en) | 2004-05-14 | 2009-10-20 | Oki Electric Industry Co., Ltd. | Contactless data carrier, interrogator, contactless data carrier system, and method of acquiring data |
| KR100937624B1 (en) * | 2004-05-14 | 2010-01-20 | 오끼 덴끼 고오교 가부시끼가이샤 | Non-contact data carrier, interrogator, non-contact data carrier system, data acquiring method of non-contact data carrier, and program for acquiring data of non-contact data carrier |
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