JPS63191831U - - Google Patents
Info
- Publication number
- JPS63191831U JPS63191831U JP8152487U JP8152487U JPS63191831U JP S63191831 U JPS63191831 U JP S63191831U JP 8152487 U JP8152487 U JP 8152487U JP 8152487 U JP8152487 U JP 8152487U JP S63191831 U JPS63191831 U JP S63191831U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- overvoltage
- voltage
- circuit
- power
- 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 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
- Stand-By Power Supply Arrangements (AREA)
Description
第１図は、本考案にかかる過電圧保護回路の実
施例の主要部の回路図、第２図は、コンパレータ
を用いた別実施例の主要部の回路図である。
１……過電圧保護回路、２……無線機、Ｃ……
コンパレータ、Ｄ１……定電圧ダイオード、Ｄ２
……ダイオード、Ｐ１……平常電源、Ｐ２……予
備電源、Ｑ１，Ｑ２……トランジスタ、Ｒ１……
抵抗、ＲＬ……リレー。
FIG. 1 is a circuit diagram of a main part of an embodiment of an overvoltage protection circuit according to the present invention, and FIG. 2 is a circuit diagram of a main part of another embodiment using a comparator. 1...Overvoltage protection circuit, 2...Radio device, C...
Comparator, D1... Constant voltage diode, D2
... Diode, P1 ... Normal power supply, P2 ... Standby power supply, Q1, Q2 ... Transistor, R1 ...
Resistor, RL...Relay.
Claims (1)
電圧検出回路と、該電圧検出回路にて検出した電
圧と所定電圧とを比較して過電圧を検出する過電
圧検出回路と、前記過電圧検出回路からの信号に
より電源系統を通常電源から予備電源に切り換え
る切り換え回路とからなる過電圧保護回路。 A voltage detection circuit consisting of a series circuit of a constant voltage diode and a resistor, an overvoltage detection circuit that detects overvoltage by comparing the voltage detected by the voltage detection circuit with a predetermined voltage, and a signal from the overvoltage detection circuit. An overvoltage protection circuit consisting of a switching circuit that switches the power system from normal power to standby power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8152487U JPH0628912Y2 (en) | 1987-05-27 | 1987-05-27 | Overvoltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8152487U JPH0628912Y2 (en) | 1987-05-27 | 1987-05-27 | Overvoltage protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63191831U true JPS63191831U (en) | 1988-12-09 |
| JPH0628912Y2 JPH0628912Y2 (en) | 1994-08-03 |
Family
ID=30933341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8152487U Expired - Lifetime JPH0628912Y2 (en) | 1987-05-27 | 1987-05-27 | Overvoltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628912Y2 (en) |
-
1987
- 1987-05-27 JP JP8152487U patent/JPH0628912Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0628912Y2 (en) | 1994-08-03 |