IT990286B - Perfezionamento nei filtri automa tioi variabili per spettrometri a frequanza variabile e simili - Google Patents

Perfezionamento nei filtri automa tioi variabili per spettrometri a frequanza variabile e simili

Info

Publication number
IT990286B
IT990286B IT5209673A IT5209673A IT990286B IT 990286 B IT990286 B IT 990286B IT 5209673 A IT5209673 A IT 5209673A IT 5209673 A IT5209673 A IT 5209673A IT 990286 B IT990286 B IT 990286B
Authority
IT
Italy
Prior art keywords
variable
improvement
similar
automatic filters
variable frequency
Prior art date
Application number
IT5209673A
Other languages
English (en)
Italian (it)
Original Assignee
Perkin Elmer 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 Perkin Elmer Corp filed Critical Perkin Elmer Corp
Application granted granted Critical
Publication of IT990286B publication Critical patent/IT990286B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)
IT5209673A 1972-08-24 1973-08-21 Perfezionamento nei filtri automa tioi variabili per spettrometri a frequanza variabile e simili IT990286B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28339972A 1972-08-24 1972-08-24

Publications (1)

Publication Number Publication Date
IT990286B true IT990286B (it) 1975-06-20

Family

ID=23085879

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5209673A IT990286B (it) 1972-08-24 1973-08-21 Perfezionamento nei filtri automa tioi variabili per spettrometri a frequanza variabile e simili

Country Status (6)

Country Link
JP (1) JPS4960749A (enExample)
AU (1) AU5923873A (enExample)
CA (1) CA992761A (enExample)
DE (1) DE2341628A1 (enExample)
FR (1) FR2197460A5 (enExample)
IT (1) IT990286B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739173B2 (de) * 1977-08-31 1979-11-15 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover Schaltungsanordnung zum Unwirksammachen von Sensorstörsignalen
JPS5961757A (ja) * 1982-09-30 1984-04-09 Shimadzu Corp 分光螢光光度計

Also Published As

Publication number Publication date
FR2197460A5 (enExample) 1974-03-22
CA992761A (en) 1976-07-13
DE2341628A1 (de) 1974-03-07
AU5923873A (en) 1975-02-20
JPS4960749A (enExample) 1974-06-12

Similar Documents

Publication Publication Date Title
IL41619A0 (en) N-propanlamine ethers and their preparation
IT989856B (it) Perfezionamento nei piloti automatici
GB1437004A (en) Filters
DE1907992B2 (de) Bruehgetraenkebereiter
ZA731073B (en) Coin selector and sorter
IT957688B (it) Perfezionamento nei procedimenti e dispositivi di confezione automa tica
BE787490A (fr) Selecteur de pieces de monnaie
BE795907A (fr) 2-amino-4-arylthiazoles 5-substitues et leur preparation
BE800781A (fr) Oxathiazinones et leur preparation
BE797101A (fr) Chlorothiazoles et leur preparation
ZA734536B (en) Improvements in games rackets
AR194786A1 (es) Cafetera
IT990286B (it) Perfezionamento nei filtri automa tioi variabili per spettrometri a frequanza variabile e simili
IT994414B (it) Perfezionamento nei magnetron
IL31997A0 (en) New pregnano-oxazolines and oxazines
SE393280B (sv) Sett och apparat for automatisk frityrstekning
IT958411B (it) Perfezionamento negli innesti automatici
SE398958B (sv) Apparat for ordnande av cigarretter i en och samma riktning
IT998932B (it) Resistore variabile
BE784244A (fr) Nouvelles coumarines et leur preparation
MY7200107A (en) Improvements in filters and sheet material for their manufacture
IT995591B (it) Resistore variabile
SE401101B (sv) Oorganiskt, konstgjort filtermaterial och forfarande for framstellning derav
BE801848A (fr) Phenoxy-aminopropanols trucycliques et leur preparation
BE795881A (fr) Tribromopyrazoles et leur preparation