JPS62115781U - - Google Patents
Info
- Publication number
- JPS62115781U JPS62115781U JP352886U JP352886U JPS62115781U JP S62115781 U JPS62115781 U JP S62115781U JP 352886 U JP352886 U JP 352886U JP 352886 U JP352886 U JP 352886U JP S62115781 U JPS62115781 U JP S62115781U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- zero
- output
- voltage
- power supply
- 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
- 230000007257 malfunction Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 3
- 239000003990 capacitor Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 13
Description
第１図は本考案一実施例の回路図、第２図は同
上の動作説明図、第３図は他の実施例の回路図、
第４図は同上の動作説明図、第５図はさらに他の
実施例の回路図、第６図は同上の動作説明図、第
７図はさらに他の実施例の回路図、第８図は従来
例の同上の問題点を示す図、第９図は従来例の回
路図、第１０図は同上の動作説明図、第１１図は
他の従来例の回路図、第１２図はさらに他の従来
例の回路図である。
５は比較回路、９，９ａ〜９ｃは誤動作防止回
路である。
Fig. 1 is a circuit diagram of one embodiment of the present invention, Fig. 2 is an explanatory diagram of the same operation as above, Fig. 3 is a circuit diagram of another embodiment,
FIG. 4 is an explanatory diagram of the same operation as above, FIG. 5 is a circuit diagram of another embodiment, FIG. 6 is an explanatory diagram of the same operation, FIG. 7 is a circuit diagram of still another embodiment, and FIG. 8 is a circuit diagram of another embodiment. FIG. 9 is a circuit diagram of the conventional example, FIG. 10 is an explanatory diagram of the same operation as above, FIG. 11 is a circuit diagram of another conventional example, and FIG. 12 is a circuit diagram of another conventional example. FIG. 2 is a circuit diagram of a conventional example. 5 is a comparison circuit, and 9, 9a to 9c are malfunction prevention circuits.
Claims (1)
準電圧以下になつたかどうかを判別する比較回路
出力をゼロクロス信号として出力するようにした
ゼロクロス検出回路において、比較回路出力が得
られた後に交流電源電圧周期よりも若干短い一定
時間だけ、比較回路出力をゼロクロス信号として
出力させないようにする誤動作防止回路を設けた
ことを特徴とするゼロクロス検出回路。 (2) 比較回路出力が得られた直後から抵抗を介
して回路電源より充電されるコンデンサと、コン
デンサの両端電圧が所定電圧以上になつたときに
導通されるスイツチ回路にて誤動作防止回路を形
成したことを特徴とする実用新案登録請求の範囲
第１項記載のゼロクロス検出回路。[Scope of Claim for Utility Model Registration] (1) In a zero-cross detection circuit that outputs the output of a comparator circuit for determining whether a pulsating voltage obtained by full-wave rectification of an AC power supply voltage has become below a reference voltage as a zero-cross signal, A zero-cross detection circuit characterized in that a malfunction prevention circuit is provided that prevents the comparison circuit output from being output as a zero-cross signal for a certain period of time slightly shorter than the AC power supply voltage cycle after the comparison circuit output is obtained. (2) A malfunction prevention circuit is formed by a capacitor that is charged from the circuit power supply via a resistor immediately after the comparison circuit output is obtained, and a switch circuit that becomes conductive when the voltage across the capacitor exceeds a specified voltage. A zero-cross detection circuit according to claim 1 of the utility model registration claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP352886U JPS62115781U (en) | 1986-01-14 | 1986-01-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP352886U JPS62115781U (en) | 1986-01-14 | 1986-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62115781U true JPS62115781U (en) | 1987-07-23 |
Family
ID=30783368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP352886U Pending JPS62115781U (en) | 1986-01-14 | 1986-01-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62115781U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016093071A (en) * | 2014-11-11 | 2016-05-23 | 三菱電機株式会社 | Interconnection inverter device |
| WO2019026706A1 (en) * | 2017-07-31 | 2019-02-07 | ローム株式会社 | Zero-crossing detection circuit |
-
1986
- 1986-01-14 JP JP352886U patent/JPS62115781U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016093071A (en) * | 2014-11-11 | 2016-05-23 | 三菱電機株式会社 | Interconnection inverter device |
| WO2019026706A1 (en) * | 2017-07-31 | 2019-02-07 | ローム株式会社 | Zero-crossing detection circuit |
| JPWO2019026706A1 (en) * | 2017-07-31 | 2020-07-02 | ローム株式会社 | Zero-cross detection circuit |
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