JPS57148264A - Zero-reset circuit - Google Patents

Zero-reset circuit

Info

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
Application number
JP3374681A
Other languages
Japanese (ja)
Other versions
JPS6322264B2 (en
Inventor
Toshihiko Ichise
Kiyoshi Hashimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3374681A priority Critical patent/JPS57148264A/en
Publication of JPS57148264A publication Critical patent/JPS57148264A/en
Publication of JPS6322264B2 publication Critical patent/JPS6322264B2/ja
Granted legal-status Critical Current

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.
JP3374681A 1981-03-11 1981-03-11 Zero-reset circuit Granted JPS57148264A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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