FR42689E - Improvements to electrical devices to produce pulses, especially at low frequencies - Google Patents

Improvements to electrical devices to produce pulses, especially at low frequencies

Info

Publication number
FR42689E
FR42689E FR42689DA FR42689E FR 42689 E FR42689 E FR 42689E FR 42689D A FR42689D A FR 42689DA FR 42689 E FR42689 E FR 42689E
Authority
FR
France
Prior art keywords
electrical devices
low frequencies
produce pulses
pulses
produce
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR42689E publication Critical patent/FR42689E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/09—Circuit arrangements or apparatus for operating incandescent light sources in which the lamp is fed by pulses
FR42689D 1932-12-21 1932-12-21 Improvements to electrical devices to produce pulses, especially at low frequencies Expired FR42689E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR42689T 1932-12-21

Publications (1)

Publication Number Publication Date
FR42689E true FR42689E (en) 1933-09-01

Family

ID=8678730

Family Applications (1)

Application Number Title Priority Date Filing Date
FR42689D Expired FR42689E (en) 1932-12-21 1932-12-21 Improvements to electrical devices to produce pulses, especially at low frequencies

Country Status (1)

Country Link
FR (1) FR42689E (en)

Similar Documents

Publication Publication Date Title
FR735186A (en) Improvements to sanitary devices
FR42689E (en) Improvements to electrical devices to produce pulses, especially at low frequencies
FR765048A (en) Improvements to filtering devices
FR44178E (en) Improvements to electrical devices to produce pulses, especially at low frequencies
FR43390E (en) Improvements to electrical devices to produce pulses, especially at low frequencies
FR730294A (en) Improvements to electrical devices to produce pulses, especially at low frequencies
FR832078A (en) Improvements to systems generating harmonic frequencies
CH206317A (en) Frequency conversion device.
FR831156A (en) Improvements to transmitting devices for television
FR755710A (en) Improvements to radiotelephony receiving devices
FR736929A (en) Improvements to devices for permanent waves
FR736585A (en) Improvements to devices for permanent waves
FR738929A (en) Improvements to devices for permanent waves
CH193001A (en) Advanced instrument for working the soil.
FR49783E (en) Improvements to teleprinter devices
FR746719A (en) Improvements to sanitary devices
FR827146A (en) Improvements to dispensing devices
FR820951A (en) Improvements made to radio-electric devices, in particular for reception
FR747925A (en) Improvements to mixing devices
FR799075A (en) Improvements to t devices. s. f.
FR813013A (en) Improvements to telephone devices
FR753357A (en) Improvements to kymography devices
FR835785A (en) Improvements to t devices. s. f.
FR832454A (en) Improvements to t devices. s. f.
FR787709A (en) Improvements to starting devices