CH231368A - Device for limiting the current in a lamp filament circuit. - Google Patents

Device for limiting the current in a lamp filament circuit.

Info

Publication number
CH231368A
CH231368A CH231368DA CH231368A CH 231368 A CH231368 A CH 231368A CH 231368D A CH231368D A CH 231368DA CH 231368 A CH231368 A CH 231368A
Authority
CH
Switzerland
Prior art keywords
limiting
current
lamp filament
filament circuit
circuit
Prior art date
Application number
Other languages
French (fr)
Inventor
Bell Telephone Manufac Anonyme
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH231368A publication Critical patent/CH231368A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H03F1/544—Protection of filaments

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Alarm Devices (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
CH231368D 1938-11-22 1939-12-01 Device for limiting the current in a lamp filament circuit. CH231368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB231368X 1938-11-22

Publications (1)

Publication Number Publication Date
CH231368A true CH231368A (en) 1944-03-15

Family

ID=10190737

Family Applications (1)

Application Number Title Priority Date Filing Date
CH231368D CH231368A (en) 1938-11-22 1939-12-01 Device for limiting the current in a lamp filament circuit.

Country Status (4)

Country Link
BE (1) BE437120A (en)
CH (1) CH231368A (en)
GB (1) GB521714A (en)
NL (1) NL55182C (en)

Also Published As

Publication number Publication date
BE437120A (en)
GB521714A (en) 1940-05-29
NL55182C (en)

Similar Documents

Publication Publication Date Title
CH214340A (en) Switching device.
CH207276A (en) Analgesia device.
CH231368A (en) Device for limiting the current in a lamp filament circuit.
CH210688A (en) Device on telephone sets with microtelephones.
CH267513A (en) Pneumatic circuit breaker for alternating current.
FR884045A (en) Device for overcurrent cut-off
SU55918A1 (en) Device for automatic sorting of Kaminsky type resistors
FR877445A (en) Lamp device
CH215519A (en) Analgesia device.
CH269955A (en) Circuit including electronic lamps.
CH214309A (en) High-frequency device with automatic tuning.
CH216071A (en) Thermionic lamp device.
GB532160A (en) Improvements in circuits for operating h.p.m.v. lamps
FR837849A (en) Modulation device for alternating current telegraphy
ES134472A1 (en) A device for mounting electric and similar lamps.
ES133973A1 (en) A device for mounting electric and similar lamps.
FR868367A (en) Device for interrupting a current without sparks
FR840921A (en) Device for connecting electrical circuits
DK59300C (en) Electrical Signaling System.
FR833121A (en) Lighting device for projection devices, cinematographs, etc.
DK65544C (en) Device for electrical signaling systems.
FR853985A (en) Phosphorescent bulb device for electric lamps
ES3518Y (en) Screw cap connection and support device for electric lamps.
IE14910L (en) Electric soldering device.
ES146061A1 (en) An electric welding device.