JPH01165471U - - Google Patents
Info
- Publication number
- JPH01165471U JPH01165471U JP6213988U JP6213988U JPH01165471U JP H01165471 U JPH01165471 U JP H01165471U JP 6213988 U JP6213988 U JP 6213988U JP 6213988 U JP6213988 U JP 6213988U JP H01165471 U JPH01165471 U JP H01165471U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- circuit
- reference voltage
- input
- 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
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- 238000000819 phase cycle Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案を説明するブロツク図、第２図
は本考案の一実施例としての入力電圧検知装置の
ブロツク図、第３図は第２図の電源電圧比較回路
の回路図、および、第４図、第５図、第６図は電
源電圧比較回路における電源電圧比較を説明する
波形である。
図において、１，２，３…電源電圧比較回路、
４…処理回路、５…電源回路、９…基準電圧切り
替え回路。
FIG. 1 is a block diagram explaining the present invention, FIG. 2 is a block diagram of an input voltage detection device as an embodiment of the present invention, FIG. 3 is a circuit diagram of the power supply voltage comparison circuit of FIG. 2, and FIG. 4, FIG. 5, and FIG. 6 are waveforms illustrating power supply voltage comparison in the power supply voltage comparison circuit. In the figure, 1, 2, 3...power supply voltage comparison circuit,
4... Processing circuit, 5... Power supply circuit, 9... Reference voltage switching circuit.
Claims (1)
電圧をある基準電圧と比較する電源電圧比較回路
１，２，３と、前記電源電圧比較回路の出力信号
を受け、電圧低下、相順、および周波数の検知を
行う処理回路４と、前記交流電源から直流電圧を
生成し、前記処理回路に電力を供給する電源回路
５とを具備する入力電圧検知装置において、 前記基準電圧として、前記電源回路５が動作し
ない交流入力電圧の値を検出するよう設定された
第１の基準電圧ＲＥＦ１と前記処理回路４が動作
する電圧値で交流入力電圧を検出するよう設定さ
れた第２の基準電圧ＲＥＦ２とを設け、前記処理
回路４は電源回路５から電力が供給される初期の
処理の際に、前記第１の基準電圧を用いて得られ
た前記電源電圧比較回路１，２，３の出力信号に
よつて周波数および相順の監視を行い、その後基
準電圧を前記第２の基準電圧に切り替え、前記第
２の基準電圧を用いて得られた前記電源電圧比較
回路１，２，３の出力信号によつて交流入力電圧
の監視を行うことを特徴とする入力電圧検知装置
。[Claims for Utility Model Registration] Power supply voltage comparison circuits 1, 2, and 3 that rectify an AC input voltage into a pulsating voltage and compare the voltage with a certain reference voltage, and an output signal of the power supply voltage comparison circuit. An input voltage detection device comprising a processing circuit 4 that detects voltage drop, phase sequence, and frequency; and a power supply circuit 5 that generates a DC voltage from the AC power source and supplies power to the processing circuit. As the reference voltage, a first reference voltage REF1 is set to detect a value of the AC input voltage at which the power supply circuit 5 does not operate, and a voltage value at which the processing circuit 4 operates is set to detect the AC input voltage. A second reference voltage REF2 is provided, and the processing circuit 4 compares the power supply voltage comparison circuit 1 obtained using the first reference voltage during initial processing when power is supplied from the power supply circuit 5. , 2 and 3, and then the reference voltage is switched to the second reference voltage, and the power supply voltage comparison circuit 1 obtains the voltage using the second reference voltage. , 2 and 3. An input voltage detection device characterized in that an AC input voltage is monitored by the output signals of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6213988U JPH01165471U (en) | 1988-05-13 | 1988-05-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6213988U JPH01165471U (en) | 1988-05-13 | 1988-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01165471U true JPH01165471U (en) | 1989-11-20 |
Family
ID=31287771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6213988U Pending JPH01165471U (en) | 1988-05-13 | 1988-05-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01165471U (en) |
-
1988
- 1988-05-13 JP JP6213988U patent/JPH01165471U/ja active Pending
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