JPH0235073U - - Google Patents
Info
- Publication number
- JPH0235073U JPH0235073U JP11460488U JP11460488U JPH0235073U JP H0235073 U JPH0235073 U JP H0235073U JP 11460488 U JP11460488 U JP 11460488U JP 11460488 U JP11460488 U JP 11460488U JP H0235073 U JPH0235073 U JP H0235073U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- switch
- opened
- power
- 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
- 238000009499 grossing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の第１実施例を示した回路図、
第２図は本考案の第２実施例を示した回路図、第
３図は従来例を示した回路図である。
１……バツテリー、２……スイツチ、３……バ
ツクアツプ回路、６……変換器、７……平滑回路
、１２……検出回路。
FIG. 1 is a circuit diagram showing a first embodiment of the present invention;
FIG. 2 is a circuit diagram showing a second embodiment of the present invention, and FIG. 3 is a circuit diagram showing a conventional example. 1... Battery, 2... Switch, 3... Backup circuit, 6... Converter, 7... Smoothing circuit, 12... Detection circuit.
Claims (1)
、この変換器から出力されたアナログ電圧を平滑
するコンデンサと抵抗から成る平滑回路と、スイ
ツチを開いたときバツテリーからの電源に換えて
前記変換器を一定時間作動させるためのバツクア
ツプ回路とを少なくとも備えたメータ駆動回路に
おいて、前記スイツチの開閉で変化する電源の電
圧の変化を検出する検出回路を備え、前記スイツ
チが開いたとき前記変換器からの出力が前記平滑
回路へ出力されることを停止させるようにしたこ
とを特徴とする帰零回路。 A converter that converts the signal to be measured into an analog voltage, a smoothing circuit consisting of a capacitor and a resistor that smoothes the analog voltage output from the converter, and a smoothing circuit that converts the power from the battery to power when the switch is opened. A meter drive circuit comprising at least a backup circuit for operating for a certain period of time, the meter driving circuit comprising a detection circuit for detecting a change in the voltage of the power supply that changes when the switch is opened or closed, the meter driving circuit comprising: a detection circuit for detecting a change in the voltage of the power supply that changes when the switch is opened; A zero return circuit characterized in that the zero return circuit is configured to stop being outputted to the smoothing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11460488U JPH0235073U (en) | 1988-08-31 | 1988-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11460488U JPH0235073U (en) | 1988-08-31 | 1988-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0235073U true JPH0235073U (en) | 1990-03-06 |
Family
ID=31355500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11460488U Pending JPH0235073U (en) | 1988-08-31 | 1988-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0235073U (en) |
-
1988
- 1988-08-31 JP JP11460488U patent/JPH0235073U/ja active Pending