FR687697A - Installation allowing the transmission of t signals. s. f. at constant frequency - Google Patents

Installation allowing the transmission of t signals. s. f. at constant frequency

Info

Publication number
FR687697A
FR687697A FR687697DA FR687697A FR 687697 A FR687697 A FR 687697A FR 687697D A FR687697D A FR 687697DA FR 687697 A FR687697 A FR 687697A
Authority
FR
France
Prior art keywords
signals
transmission
constant frequency
installation allowing
allowing
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
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR687697A publication Critical patent/FR687697A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/008—Details related to central heating radiators
    • F24D19/0082—Humidifiers for radiators
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/06—Dredgers; Soil-shifting machines mechanically-driven with digging screws
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
FR687697D 1929-02-07 1930-01-04 Installation allowing the transmission of t signals. s. f. at constant frequency Expired FR687697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL687697X 1929-02-07

Publications (1)

Publication Number Publication Date
FR687697A true FR687697A (en) 1930-08-12

Family

ID=19805713

Family Applications (1)

Application Number Title Priority Date Filing Date
FR687697D Expired FR687697A (en) 1929-02-07 1930-01-04 Installation allowing the transmission of t signals. s. f. at constant frequency

Country Status (2)

Country Link
BE (2) BE366672A (en)
FR (1) FR687697A (en)

Also Published As

Publication number Publication date
BE366672A (en)
BE366612A (en)

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