JPS6074064U - Frequency abnormality detection device - Google Patents
Frequency abnormality detection deviceInfo
- Publication number
- JPS6074064U JPS6074064U JP16668183U JP16668183U JPS6074064U JP S6074064 U JPS6074064 U JP S6074064U JP 16668183 U JP16668183 U JP 16668183U JP 16668183 U JP16668183 U JP 16668183U JP S6074064 U JPS6074064 U JP S6074064U
- Authority
- JP
- Japan
- Prior art keywords
- detection device
- abnormality detection
- output
- frequency abnormality
- binary counter
- 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
Landscapes
- Manipulation Of Pulses (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の一実施例を示す周波数異常検出装置の回
路図である。
１は水晶発振回路、２，３は分周回路、４はインバータ
装置、５は５０／６０Ｈｚ切換回路、６はバイナリ−・
カウンタ、９はＥ−ＰＲＯＭ、１３はＯＲ回φ。The drawing is a circuit diagram of a frequency abnormality detection device showing an embodiment of the present invention. 1 is a crystal oscillator circuit, 2 and 3 are frequency dividing circuits, 4 is an inverter device, 5 is a 50/60Hz switching circuit, 6 is a binary...
Counter, 9 is E-PROM, 13 is OR times φ.
Claims (1)
タを用いて、インバータ装置より出力される商用交流電
圧の一周期をバイナリ−・カウンタの分解能に応じて、
任意の数に分割せしめ、これと正常時における分割値と
をＥ−ＦＲＯＭを用いて比較し、−周期当りの位相のず
れを数値的に検出し、その値に応じて動作中のインバー
タ装置の出力する周波数状態の異常を警報として出力す
る如く回蕗を構成せしめてなる周波数異常検出装置。Using a crystal oscillation circuit using a crystal oscillator and a binary counter, one period of the commercial AC voltage output from the inverter device is calculated according to the resolution of the binary counter.
Divide into an arbitrary number, compare this with the division value under normal conditions using E-FROM, - numerically detect the phase shift per cycle, and adjust the inverter device during operation according to that value. A frequency abnormality detection device comprising a turntable so as to output an abnormality in the output frequency state as an alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16668183U JPS6074064U (en) | 1983-10-27 | 1983-10-27 | Frequency abnormality detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16668183U JPS6074064U (en) | 1983-10-27 | 1983-10-27 | Frequency abnormality detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6074064U true JPS6074064U (en) | 1985-05-24 |
Family
ID=30364853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16668183U Pending JPS6074064U (en) | 1983-10-27 | 1983-10-27 | Frequency abnormality detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6074064U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55122166A (en) * | 1979-03-14 | 1980-09-19 | Hitachi Ltd | Frequency detection circuit |
-
1983
- 1983-10-27 JP JP16668183U patent/JPS6074064U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55122166A (en) * | 1979-03-14 | 1980-09-19 | Hitachi Ltd | Frequency detection circuit |
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