FR763545A - Device for supplying an alternating current sound generator by a direct current network - Google Patents

Device for supplying an alternating current sound generator by a direct current network

Info

Publication number
FR763545A
FR763545A FR763545DA FR763545A FR 763545 A FR763545 A FR 763545A FR 763545D A FR763545D A FR 763545DA FR 763545 A FR763545 A FR 763545A
Authority
FR
France
Prior art keywords
supplying
sound generator
direct current
alternating current
current network
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)
Inventor
Andor Lenkei
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 filed Critical
Application granted granted Critical
Publication of FR763545A publication Critical patent/FR763545A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR763545D 1932-11-18 1933-11-07 Device for supplying an alternating current sound generator by a direct current network Expired FR763545A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU763545X 1932-11-18

Publications (1)

Publication Number Publication Date
FR763545A true FR763545A (en) 1934-05-02

Family

ID=10980244

Family Applications (1)

Application Number Title Priority Date Filing Date
FR763545D Expired FR763545A (en) 1932-11-18 1933-11-07 Device for supplying an alternating current sound generator by a direct current network

Country Status (1)

Country Link
FR (1) FR763545A (en)

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