JPH023141U - - Google Patents
Info
- Publication number
- JPH023141U JPH023141U JP7777488U JP7777488U JPH023141U JP H023141 U JPH023141 U JP H023141U JP 7777488 U JP7777488 U JP 7777488U JP 7777488 U JP7777488 U JP 7777488U JP H023141 U JPH023141 U JP H023141U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- power
- switch
- outputs
- 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 3
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案の異常入力電圧保護回路のブロ
ツク図、第２図は第１図の回路の入力電圧検出回
路の一実施例を示す回路図、および第３図は第２
図の回路を説明する特性図である。
図において、１…電源投入スイツチ、２…入力
電圧検出回路、３…制御回路、４…電源部、５…
装置、６…リレー接点。
FIG. 1 is a block diagram of the abnormal input voltage protection circuit of the present invention, FIG. 2 is a circuit diagram showing an embodiment of the input voltage detection circuit of the circuit of FIG.
It is a characteristic diagram explaining the circuit of a figure. In the figure, 1...power-on switch, 2...input voltage detection circuit, 3...control circuit, 4...power supply section, 5...
Device, 6...Relay contact.
Claims (1)
１に直列に接続されたリレー接点６と、電源入力
が前記電源投入スイツチ１および前記リレー接点
６を介して供給される電源部４と、前記電源部４
から所定の電圧の供給を受ける装置５であつて電
源の供給を受けようとする時操作することによつ
て電源投入信号を出力するものと、前記電源投入
スイツチ１における入力電圧を検出しその値が許
容値内である時リレー投入信号を出力する入力電
圧検出回路２と、前記電源投入信号と前記リレー
投入信号の論理積を求めて前記リレー接点６を導
通させる制御回路３と、を具備する異常入力電圧
保護回路。 A power supply switch 1, a relay contact 6 connected in series to the power supply switch 1, a power supply section 4 to which power input is supplied via the power supply switch 1 and the relay contact 6, and the power supply section 4.
A device 5 that receives a predetermined voltage from the power supply switch 1 and outputs a power-on signal when operated to receive power supply, and a device 5 that detects the input voltage at the power-on switch 1 and outputs a power-on signal. includes an input voltage detection circuit 2 that outputs a relay closing signal when is within an allowable value, and a control circuit 3 that calculates the logical product of the power supply closing signal and the relay closing signal and makes the relay contact 6 conductive. Abnormal input voltage protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7777488U JPH023141U (en) | 1988-06-14 | 1988-06-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7777488U JPH023141U (en) | 1988-06-14 | 1988-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH023141U true JPH023141U (en) | 1990-01-10 |
Family
ID=31302737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7777488U Pending JPH023141U (en) | 1988-06-14 | 1988-06-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH023141U (en) |
-
1988
- 1988-06-14 JP JP7777488U patent/JPH023141U/ja active Pending