JPS61129173U - - Google Patents
Info
- Publication number
- JPS61129173U JPS61129173U JP1227485U JP1227485U JPS61129173U JP S61129173 U JPS61129173 U JP S61129173U JP 1227485 U JP1227485 U JP 1227485U JP 1227485 U JP1227485 U JP 1227485U JP S61129173 U JPS61129173 U JP S61129173U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- measured
- power source
- voltage
- drive circuit
- 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
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Power Sources (AREA)
Description
第１図は本考案の第１の実施例、第４図は本考
案の第２の実施例、第５図は本考案の第３の実施
例になる夫々電圧監視回路を示す。第２図及び第
３図は夫々第１図の回路動作を説明する為の図、
第６図は従来の電圧監視回路、第７図及び第８図
は第６図の回路動作を説明する為の図を夫々示す
。
Ｒ１〜Ｒ３１，Ｒ……抵抗、Ｄ１〜Ｄ３……ツ
エナーダイオード、Ｑ１〜Ｑ３２……トランジス
タ、Ｖｃｃ……被測定電源、１〜５……リセツト
出力端子。
FIG. 1 shows a voltage monitoring circuit according to a first embodiment of the present invention, FIG. 4 a second embodiment of the present invention, and FIG. 5 a third embodiment of the present invention. Figures 2 and 3 are diagrams for explaining the circuit operation of Figure 1, respectively;
FIG. 6 shows a conventional voltage monitoring circuit, and FIGS. 7 and 8 are diagrams for explaining the operation of the circuit shown in FIG. 6, respectively. R1 to R31 , R...Resistor, D1 to D3 ...Zener diode, Q1 to Q32 ...Transistor, Vcc...Power supply under test, 1 to 5...Reset output terminal.
Claims (1)
てその変動を検出する検出回路と、この検出回路
に接続された駆動回路と、この駆動回路に接続さ
れた出力回路とからなる電圧監視回路において、
この電圧監視回路と被測定電源との間に電圧降下
素子を接続し、被測定電源がある一定の電圧以上
か又はそれ以下になつたとき該駆動回路をオフ又
はオン動作する様に該検出回路が構成され、該電
圧降下素子、該検出回路及び駆動回路により正帰
還回路が形成された事を特徴とする電圧監視回路
。 A voltage monitoring circuit that uses the power supply to be measured as a power source and includes a detection circuit that monitors the power supply to be measured and detects its fluctuations, a drive circuit connected to this detection circuit, and an output circuit connected to this drive circuit. In,
A voltage drop element is connected between this voltage monitoring circuit and the power source to be measured, and the detection circuit is configured to turn off or turn on the drive circuit when the power source to be measured falls above or below a certain voltage. 1. A voltage monitoring circuit comprising: a positive feedback circuit formed by the voltage drop element, the detection circuit and the drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985012274U JPH0742145Y2 (en) | 1985-01-31 | 1985-01-31 | Voltage monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985012274U JPH0742145Y2 (en) | 1985-01-31 | 1985-01-31 | Voltage monitoring circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61129173U true JPS61129173U (en) | 1986-08-13 |
| JPH0742145Y2 JPH0742145Y2 (en) | 1995-09-27 |
Family
ID=30495180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985012274U Expired - Lifetime JPH0742145Y2 (en) | 1985-01-31 | 1985-01-31 | Voltage monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0742145Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247220U (en) * | 1975-09-30 | 1977-04-04 | ||
| JPS5537959U (en) * | 1978-09-04 | 1980-03-11 | ||
| JPS58154672A (en) * | 1982-03-10 | 1983-09-14 | Nippon Kogaku Kk <Nikon> | Device for checking battery |
-
1985
- 1985-01-31 JP JP1985012274U patent/JPH0742145Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247220U (en) * | 1975-09-30 | 1977-04-04 | ||
| JPS5537959U (en) * | 1978-09-04 | 1980-03-11 | ||
| JPS58154672A (en) * | 1982-03-10 | 1983-09-14 | Nippon Kogaku Kk <Nikon> | Device for checking battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0742145Y2 (en) | 1995-09-27 |