JPH0265171U - - Google Patents
Info
- Publication number
- JPH0265171U JPH0265171U JP14409688U JP14409688U JPH0265171U JP H0265171 U JPH0265171 U JP H0265171U JP 14409688 U JP14409688 U JP 14409688U JP 14409688 U JP14409688 U JP 14409688U JP H0265171 U JPH0265171 U JP H0265171U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- output
- voltage detection
- collector
- input 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案の電断検出回路の一実施例を示
す回路図、第２図は第１図の動作を説明するため
の各部波形を示す図、第３図は従来の電断検出回
路の一例を示す回路図、第４図は第３図の動作を
説明するための各部波形を示す図である。
１…入力電圧検出端子（ＴＩ）、２……入力電
圧検出回路用電源端子（ＴＰ）、３……入力電圧
検出回路（ＤＥＴＩ）、４……出力トランジスタ
（ＴＲ）、５……電断検出出力端子ＰＦ、６……
入力電圧検出回路用電源電圧検出回路（ＤＥＴｐ
）、７……ノーマリクローズド素子（ＥＬ）。
Fig. 1 is a circuit diagram showing an embodiment of the power interruption detection circuit of the present invention, Fig. 2 is a diagram showing waveforms of various parts to explain the operation of Fig. 1, and Fig. 3 is a conventional power interruption detection circuit. FIG. 4 is a diagram showing waveforms of various parts for explaining the operation of FIG. 3. 1... Input voltage detection terminal (TI), 2... Power supply terminal for input voltage detection circuit (TP), 3... Input voltage detection circuit (DETI), 4... Output transistor (TR), 5... Power interruption detection Output terminal PF, 6...
Power supply voltage detection circuit for input voltage detection circuit (DET p
), 7... Normally closed element (EL).
Claims (1)
クタ・エミツタ間に入力電圧検出回路の電源電圧
検出回路出力によつてオン／オフするノーマリク
ローズド素子を接続したことを特徴とする電断検
出回路。 1. A power failure detection circuit characterized in that a normally closed element is connected between the collector and emitter of an output transistor whose collector is an output, and which is turned on and off by the output of a power supply voltage detection circuit of an input voltage detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14409688U JPH0265171U (en) | 1988-11-02 | 1988-11-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14409688U JPH0265171U (en) | 1988-11-02 | 1988-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0265171U true JPH0265171U (en) | 1990-05-16 |
Family
ID=31411498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14409688U Pending JPH0265171U (en) | 1988-11-02 | 1988-11-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0265171U (en) |
-
1988
- 1988-11-02 JP JP14409688U patent/JPH0265171U/ja active Pending