GB1295773A - - Google Patents

Info

Publication number
GB1295773A
GB1295773A GB1295773DA GB1295773A GB 1295773 A GB1295773 A GB 1295773A GB 1295773D A GB1295773D A GB 1295773DA GB 1295773 A GB1295773 A GB 1295773A
Authority
GB
United Kingdom
Prior art keywords
background level
rectifier
march
terminal
feedback
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.)
Expired
Application number
Other languages
English (en)
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 filed Critical
Publication of GB1295773A publication Critical patent/GB1295773A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Amplifiers (AREA)
GB1295773D 1969-03-21 1970-03-23 Expired GB1295773A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6904452A NL6904452A (enrdf_load_stackoverflow) 1969-03-21 1969-03-21

Publications (1)

Publication Number Publication Date
GB1295773A true GB1295773A (enrdf_load_stackoverflow) 1972-11-08

Family

ID=19806494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1295773D Expired GB1295773A (enrdf_load_stackoverflow) 1969-03-21 1970-03-23

Country Status (4)

Country Link
DE (1) DE2012456A1 (enrdf_load_stackoverflow)
FR (1) FR2039674A5 (enrdf_load_stackoverflow)
GB (1) GB1295773A (enrdf_load_stackoverflow)
NL (1) NL6904452A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114166275A (zh) * 2021-11-30 2022-03-11 厦门加华电力科技有限公司 一种便携式高压开关柜sf6综合检测仪

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL175777C (nl) * 1977-05-27 1984-12-17 Nederlanden Staat Schakeling voor de eliminatie van de achtergrondhelderheidsvariatie van een videosignaal.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114166275A (zh) * 2021-11-30 2022-03-11 厦门加华电力科技有限公司 一种便携式高压开关柜sf6综合检测仪

Also Published As

Publication number Publication date
DE2012456A1 (de) 1971-02-18
FR2039674A5 (enrdf_load_stackoverflow) 1971-01-15
NL6904452A (enrdf_load_stackoverflow) 1970-09-23

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees