JPS61123978U - - Google Patents
Info
- Publication number
- JPS61123978U JPS61123978U JP748285U JP748285U JPS61123978U JP S61123978 U JPS61123978 U JP S61123978U JP 748285 U JP748285 U JP 748285U JP 748285 U JP748285 U JP 748285U JP S61123978 U JPS61123978 U JP S61123978U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- voltage
- under test
- pulsating
- signal voltage
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Recording Measured Values (AREA)
Description
添付図面はいずれもこの考案によるＡＣ／ＤＣ
変換回路の実施例に係り、第１図はその回路構成
図、第２図は原理説明図、第３図は各部の信号波
形図、第４図は記録紙上に描かれた被測定信号と
時間信号の一例を示す説明図である。
図中、４は全波整流器、６はコンデンサ、８は
ホトダイオード、９はホトトランジスタ、１２は
コンパレータである。
The attached drawings are all AC/DC based on this invention.
Regarding an example of the conversion circuit, Fig. 1 is a circuit configuration diagram, Fig. 2 is a diagram explaining the principle, Fig. 3 is a signal waveform diagram of each part, and Fig. 4 is a measurement target signal and time drawn on recording paper. It is an explanatory diagram showing an example of a signal. In the figure, 4 is a full-wave rectifier, 6 is a capacitor, 8 is a photodiode, 9 is a phototransistor, and 12 is a comparator.
Claims (1)
入力された上記被測定信号の断の時点に同期して
オフとなる一定レベルの直流信号電圧を上記被測
定信号から形成し、該信号電圧を上記被測定信号
の入力期間を表示するための時間信号として送出
するＡＣ／ＤＣ変換回路であつて、 上記被測定信号を検波する全波整流器と、 該全波整流器から出力される脈流状信号電圧に
よつて充放電され、上記脈流状信号電圧波形の極
小値を所定レベルの値に昇圧するためのコンデン
サと、 該コンデンサによりその極小値が昇圧された上
記脈流状信号電圧をホトカプラを介して一方の入
力端に受けるとともに、その他方の入力端には上
記昇圧された電圧レベルを超えない大きさのしき
い値電圧が加えられるコンパレータとを備え、 該コンパレータを介して上記脈流状信号電圧が
一定レベルの直流信号電圧に波形整形されること
を特徴とするＡＣ／ＤＣ変換回路。[Scope of utility model registration claim] Turns on in synchronization with the input of the signal under test,
A DC signal voltage of a constant level that is turned off in synchronization with the disconnection of the input signal under test is formed from the signal under test, and the signal voltage is used to display the input period of the signal under test. An AC/DC conversion circuit that sends out a signal, including a full-wave rectifier that detects the signal under test, and a pulsating signal voltage output from the full-wave rectifier that is charged and discharged to generate the pulsating signal. A capacitor for boosting the minimum value of the voltage waveform to a predetermined level value, and receiving the pulsating signal voltage whose minimum value has been boosted by the capacitor through a photocoupler at one input terminal, and receiving the pulsating signal voltage from the other input terminal through a photocoupler. The input terminal is provided with a comparator to which a threshold voltage of a magnitude not exceeding the boosted voltage level is applied, and the pulsating signal voltage is waveform-shaped into a DC signal voltage at a constant level via the comparator. An AC/DC conversion circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP748285U JPH0524182Y2 (en) | 1985-01-23 | 1985-01-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP748285U JPH0524182Y2 (en) | 1985-01-23 | 1985-01-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61123978U true JPS61123978U (en) | 1986-08-04 |
| JPH0524182Y2 JPH0524182Y2 (en) | 1993-06-21 |
Family
ID=30485874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP748285U Expired - Lifetime JPH0524182Y2 (en) | 1985-01-23 | 1985-01-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0524182Y2 (en) |
-
1985
- 1985-01-23 JP JP748285U patent/JPH0524182Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0524182Y2 (en) | 1993-06-21 |
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