FR863704A - Improvements to circuits incorporating thermionic lamps - Google Patents

Improvements to circuits incorporating thermionic lamps

Info

Publication number
FR863704A
FR863704A FR863704DA FR863704A FR 863704 A FR863704 A FR 863704A FR 863704D A FR863704D A FR 863704DA FR 863704 A FR863704 A FR 863704A
Authority
FR
France
Prior art keywords
thermionic
lamps
circuits incorporating
incorporating
circuits
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR863704A publication Critical patent/FR863704A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/005—Reducing noise, e.g. humm, from the supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR863704D 1939-03-09 1940-03-06 Improvements to circuits incorporating thermionic lamps Expired FR863704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB863704X 1939-03-09

Publications (1)

Publication Number Publication Date
FR863704A true FR863704A (en) 1941-04-08

Family

ID=10609799

Family Applications (1)

Application Number Title Priority Date Filing Date
FR863704D Expired FR863704A (en) 1939-03-09 1940-03-06 Improvements to circuits incorporating thermionic lamps

Country Status (1)

Country Link
FR (1) FR863704A (en)

Similar Documents

Publication Publication Date Title
FR52103E (en) Improvements to circuit breakers
FR855703A (en) Luminescent lamps
FR51400E (en) Improvements to discharge tubes
FR858869A (en) Improvements to thermionic lamp circuits
FR863704A (en) Improvements to circuits incorporating thermionic lamps
FR847652A (en) Thermionic lamp circuits
FR861547A (en) Improvements to grid-screen lamps
FR833763A (en) Improvements to mercury switches
FR816530A (en) Improvements to devices incorporating thermionic lamps
FR869419A (en) Thermionic lamp circuits
FR866864A (en) Improvements to circuits with discharge tubes
FR866847A (en) Improvements to circuits with discharge tubes
FR866920A (en) Improvements to discharge lamp circuits
FR850738A (en) Improvements to discharge lamps
FR878202A (en) Improvements to circuits comprising electron tubes
FR872842A (en) Improvements made to electric discharge tubes
FR864344A (en) Improvements to incandescent lamp bases
FR851499A (en) Thermionic lamp circuits
FR865185A (en) Improvements to circuit breakers
FR816136A (en) Improvements to circuits comprising thermionic tubes
FR50983E (en) Improvements to discharge tubes
FR864289A (en) Improvements to discharge tubes
FR950463A (en) Antimicrophonic circuit comprising photocells
FR862908A (en) Improvements to discharge lamps
FR849138A (en) Improvements to grid-screen lamps