JPS6253370U - - Google Patents
Info
- Publication number
- JPS6253370U JPS6253370U JP14425685U JP14425685U JPS6253370U JP S6253370 U JPS6253370 U JP S6253370U JP 14425685 U JP14425685 U JP 14425685U JP 14425685 U JP14425685 U JP 14425685U JP S6253370 U JPS6253370 U JP S6253370U
- Authority
- JP
- Japan
- Prior art keywords
- sample hold
- voltage
- hold circuit
- double
- power failure
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案の一実施例を示す構成図、第２
図は第１図の動作波形を示す図、第３図は従来の
停電検出回路の構成図、第４図、第５図、第６図
は第３図を説明する為の動作波形を示した図であ
る。
１１……単相交流電源、１２……整流器、１３
……サンプルホールド回路、１４……比較器、１
５……零点検出器、１６……遅れ回路、１７……
ワンシヨツト回路、１８……設定器、１９……レ
ベル検出回路、２０……反転回路。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure shows the operating waveforms of Fig. 1, Fig. 3 is a configuration diagram of a conventional power failure detection circuit, and Figs. 4, 5, and 6 show operating waveforms for explaining Fig. 3. It is a diagram. 11... Single-phase AC power supply, 12... Rectifier, 13
...Sample hold circuit, 14...Comparator, 1
5... Zero point detector, 16... Delay circuit, 17...
One shot circuit, 18...setting device, 19...level detection circuit, 20...inverting circuit.
Claims (1)
るサンプルホールド回路を持ち、サンプルホール
ド回路の出力と設定値を比較して停電検出を行な
う停電検出回路において、前記サンプルホールド
回路のサンプル指令として両波整流電圧の電圧立
下り時点から所定時間遅らせた信号を使うことを
特徴とする停電検出回路。 In a power failure detection circuit that has a sample hold circuit that stores the instantaneous time of a double-wave rectified voltage of a single-phase AC voltage, and detects a power failure by comparing the output of the sample hold circuit and a set value, as a sample command for the sample hold circuit. A power outage detection circuit characterized by using a signal delayed by a predetermined time from the voltage fall point of a double-wave rectified voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985144256U JPH0650782Y2 (en) | 1985-09-24 | 1985-09-24 | Power failure detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985144256U JPH0650782Y2 (en) | 1985-09-24 | 1985-09-24 | Power failure detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6253370U true JPS6253370U (en) | 1987-04-02 |
| JPH0650782Y2 JPH0650782Y2 (en) | 1994-12-21 |
Family
ID=31054683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985144256U Expired - Lifetime JPH0650782Y2 (en) | 1985-09-24 | 1985-09-24 | Power failure detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0650782Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58143277A (en) * | 1982-02-22 | 1983-08-25 | Nec Corp | Service interruption detecting device |
-
1985
- 1985-09-24 JP JP1985144256U patent/JPH0650782Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58143277A (en) * | 1982-02-22 | 1983-08-25 | Nec Corp | Service interruption detecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0650782Y2 (en) | 1994-12-21 |
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