JPS57148264A - Zero-reset circuit - Google Patents
Zero-reset circuitInfo
- Publication number
- JPS57148264A JPS57148264A JP3374681A JP3374681A JPS57148264A JP S57148264 A JPS57148264 A JP S57148264A JP 3374681 A JP3374681 A JP 3374681A JP 3374681 A JP3374681 A JP 3374681A JP S57148264 A JPS57148264 A JP S57148264A
- Authority
- JP
- Japan
- Prior art keywords
- meter
- circuit
- capacitor
- indicator
- zero
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/12—Circuits for multi-testers, i.e. multimeters, e.g. for measuring voltage, current, or impedance at will
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
PURPOSE:To make it possible to return an indicator of a meter to zero position quickly when the power source is turned OFF and also to minimize capacity of a capacitor in a backup circuit, by providing a zero-reset discharging circuit which is designed to operate when the power source is turned OFF. CONSTITUTION:A signal put into an input terminal 2 is converted to an analog voltage by a converter main body 1, smoothened by a smoothing circuit 3, converted to a meter driving signal by a driving circuit 7 and outputted to a meter 8. An indicator of the meter 8 indicates a value in accordance with the aforementioned driving signal. Under this state, such a load is accumulated in a capacitor 6 in the circuit 3 that voltages on the both terminals become equal to the aforementioned analog voltage. And then, when a switch 12 is opened, the capacitor 6 starts discharging through resistors 5 and 14. For this reason, voltage being put into the driving circuit 7 decreass rapidly, the driving signal of the meter 8 also decreases and the indicator of the meter 8 returns to zero quickly. Since a value of the resistor 14 is selected such that the indicator returns rapidly, it is possible to minimize capacity of a capacitor 10 in a backup circuit 9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3374681A JPS57148264A (en) | 1981-03-11 | 1981-03-11 | Zero-reset circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3374681A JPS57148264A (en) | 1981-03-11 | 1981-03-11 | Zero-reset circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57148264A true JPS57148264A (en) | 1982-09-13 |
JPS6322264B2 JPS6322264B2 (en) | 1988-05-11 |
Family
ID=12394974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3374681A Granted JPS57148264A (en) | 1981-03-11 | 1981-03-11 | Zero-reset circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57148264A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01148866U (en) * | 1988-04-01 | 1989-10-16 | ||
JPH0462480A (en) * | 1990-06-30 | 1992-02-27 | Nippon Seiki Co Ltd | Cross coil type instrument |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50976U (en) * | 1973-04-18 | 1975-01-08 | ||
JPS51120164A (en) * | 1975-04-14 | 1976-10-21 | Hitachi Ltd | Forced time limit reset circuit for time limit relay |
JPS51147069U (en) * | 1975-05-19 | 1976-11-25 | ||
JPS5244552A (en) * | 1975-10-06 | 1977-04-07 | Omron Tateisi Electronics Co | Zero-return circuit at service in terruption time |
JPS532063A (en) * | 1976-06-28 | 1978-01-10 | Iwanaka Denki Seisakushiyo Kk | Cr timer circuit |
JPS54113051A (en) * | 1978-02-24 | 1979-09-04 | Hitachi Ltd | Integrating circuit of time-limit relay |
JPS5564772U (en) * | 1978-10-27 | 1980-05-02 |
-
1981
- 1981-03-11 JP JP3374681A patent/JPS57148264A/en active Granted
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50976U (en) * | 1973-04-18 | 1975-01-08 | ||
JPS51120164A (en) * | 1975-04-14 | 1976-10-21 | Hitachi Ltd | Forced time limit reset circuit for time limit relay |
JPS51147069U (en) * | 1975-05-19 | 1976-11-25 | ||
JPS5244552A (en) * | 1975-10-06 | 1977-04-07 | Omron Tateisi Electronics Co | Zero-return circuit at service in terruption time |
JPS532063A (en) * | 1976-06-28 | 1978-01-10 | Iwanaka Denki Seisakushiyo Kk | Cr timer circuit |
JPS54113051A (en) * | 1978-02-24 | 1979-09-04 | Hitachi Ltd | Integrating circuit of time-limit relay |
JPS5564772U (en) * | 1978-10-27 | 1980-05-02 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01148866U (en) * | 1988-04-01 | 1989-10-16 | ||
JPH0462480A (en) * | 1990-06-30 | 1992-02-27 | Nippon Seiki Co Ltd | Cross coil type instrument |
Also Published As
Publication number | Publication date |
---|---|
JPS6322264B2 (en) | 1988-05-11 |
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