JPS6418014A - Noise disturbance reducing circuit for measuring apparatus - Google Patents

Noise disturbance reducing circuit for measuring apparatus

Info

Publication number
JPS6418014A
JPS6418014A JP62174440A JP17444087A JPS6418014A JP S6418014 A JPS6418014 A JP S6418014A JP 62174440 A JP62174440 A JP 62174440A JP 17444087 A JP17444087 A JP 17444087A JP S6418014 A JPS6418014 A JP S6418014A
Authority
JP
Japan
Prior art keywords
output
circuit
input
separated
radio wave
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
JP62174440A
Other languages
Japanese (ja)
Other versions
JPH0648196B2 (en
Inventor
Kenji Tamaki
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP62174440A priority Critical patent/JPH0648196B2/en
Publication of JPS6418014A publication Critical patent/JPS6418014A/en
Publication of JPH0648196B2 publication Critical patent/JPH0648196B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To enable the maintaining of high reliability even under an adverse environment, by a method wherein an output circuit is separated from a circuit when a level by which an output signal is discriminated is not necessary for a measuring device or the like and a signal circuit is separated from the output circuit until the phenomenon to be detected appears to prevent an error output attributed to radio wave noises or the like. CONSTITUTION:An input into an IC1 as output amplifier at the final stage of a back scattering type visibility meter is inputted into a comparator circuit of an IC2 simultaneously. When this input level is smaller than a value previously set with a volume control VR, an output thereof turns to L and a control terminal C of an IC3 connected to the value control also to L. Then, there is a high impedance between an input (i) and an output (o) of the IC3, an output of the IC1 is electrically separated from a voltage output terminal. With such an arrangement, a capacitor C acts as bypass capacitor for radio wave noise or the like. A surge absorption element Z prevents the breakdown of the IC3 when an intense noise is mixed-in.
JP62174440A 1987-07-13 1987-07-13 Noise reduction circuit for measuring instruments Expired - Fee Related JPH0648196B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62174440A JPH0648196B2 (en) 1987-07-13 1987-07-13 Noise reduction circuit for measuring instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62174440A JPH0648196B2 (en) 1987-07-13 1987-07-13 Noise reduction circuit for measuring instruments

Publications (2)

Publication Number Publication Date
JPS6418014A true JPS6418014A (en) 1989-01-20
JPH0648196B2 JPH0648196B2 (en) 1994-06-22

Family

ID=15978556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62174440A Expired - Fee Related JPH0648196B2 (en) 1987-07-13 1987-07-13 Noise reduction circuit for measuring instruments

Country Status (1)

Country Link
JP (1) JPH0648196B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007127594A (en) * 2005-11-07 2007-05-24 Riken Keiki Co Ltd Explosion-proof type gas detector
KR100922851B1 (en) * 2007-12-11 2009-10-20 엘지전자 주식회사 Cleaning device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005198A1 (en) * 2011-03-07 2012-09-13 Dürkopp Adler AG Sewing machine and method for sewing a seam beginning with such a sewing machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4853231U (en) * 1971-10-22 1973-07-10
JPS5549286U (en) * 1978-09-28 1980-03-31
JPS5622500A (en) * 1979-08-01 1981-03-03 Sanyo Electric Co Audio identifying device
JPS61147920A (en) * 1984-12-19 1986-07-05 エルパトローニク・アクチエンゲゼルシヤフト Feeding guide for circular blank of machine welding longitudinal edge
JPS61147920U (en) * 1985-03-06 1986-09-12

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4853231U (en) * 1971-10-22 1973-07-10
JPS5549286U (en) * 1978-09-28 1980-03-31
JPS5622500A (en) * 1979-08-01 1981-03-03 Sanyo Electric Co Audio identifying device
JPS61147920A (en) * 1984-12-19 1986-07-05 エルパトローニク・アクチエンゲゼルシヤフト Feeding guide for circular blank of machine welding longitudinal edge
JPS61147920U (en) * 1985-03-06 1986-09-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007127594A (en) * 2005-11-07 2007-05-24 Riken Keiki Co Ltd Explosion-proof type gas detector
KR100922851B1 (en) * 2007-12-11 2009-10-20 엘지전자 주식회사 Cleaning device

Also Published As

Publication number Publication date
JPH0648196B2 (en) 1994-06-22

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees