JPS6418014A - Noise disturbance reducing circuit for measuring apparatus - Google Patents
Noise disturbance reducing circuit for measuring apparatusInfo
- 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
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.
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)
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)
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)
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 |
-
1987
- 1987-07-13 JP JP62174440A patent/JPH0648196B2/en not_active Expired - Fee Related
Patent Citations (5)
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)
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 |