DE278950C - - Google Patents

Info

Publication number
DE278950C
DE278950C DENDAT278950D DE278950DA DE278950C DE 278950 C DE278950 C DE 278950C DE NDAT278950 D DENDAT278950 D DE NDAT278950D DE 278950D A DE278950D A DE 278950DA DE 278950 C DE278950 C DE 278950C
Authority
DE
Germany
Prior art keywords
current
resistor
glow
line
iron
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.)
Active
Application number
DENDAT278950D
Other languages
German (de)
English (en)
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.)
Publication of DE278950C publication Critical patent/DE278950C/de
Active legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F13/00Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
DENDAT278950D 1912-07-15 Active DE278950C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT191315179X 1912-07-15

Publications (1)

Publication Number Publication Date
DE278950C true DE278950C (enrdf_load_stackoverflow)

Family

ID=32601447

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT278950D Active DE278950C (enrdf_load_stackoverflow) 1912-07-15

Country Status (3)

Country Link
DE (1) DE278950C (enrdf_load_stackoverflow)
FR (1) FR463735A (enrdf_load_stackoverflow)
GB (1) GB191315179A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB191315179A (en) 1914-02-12
FR463735A (fr) 1914-03-03

Similar Documents

Publication Publication Date Title
DE278950C (enrdf_load_stackoverflow)
DE868384C (de) Magnetostriktionsschwinger
US1961058A (en) Magnetic interrupter
US1112411A (en) Wave-detector.
US2252645A (en) Apparatus for producing constant current
US364619A (en) Relay-instrument
US1797696A (en) Pocket telegraph receptor
US226485A (en) Jesse h
US1743494A (en) Pole-changer transmitter
US128894A (en) Inprovement in telegraph apparatus
AT109908B (de) Lautsprecher.
US749791A (en) Means for reproducing electrical variations
DE921948C (de) Elektrisch angeregte Stimmgabel
US235658A (en) Relay-telephone
AT56204B (de) Einrichtung zur abgestimmten Telegraphie und Telephonie ohne Draht.
AT109321B (de) Lautsprecher.
US1164407A (en) Telephone-relay.
AT55487B (de) Einrichtung zur Erzeugung, Verstärkung oder Aufnahme elektrischer Schwingungen.
DE240800C (enrdf_load_stackoverflow)
US939625A (en) Apparatus for strengthening weak electrical currents.
DE237671C (enrdf_load_stackoverflow)
US1194457A (en) willis
DE265532C (enrdf_load_stackoverflow)
AT102051B (de) Zusatzendverstärkereinrichtung.
DE315628C (enrdf_load_stackoverflow)