GB147948A - Arrangement for avoiding disturbing noises in listening devices caused by changing circuits associated therewith - Google Patents

Arrangement for avoiding disturbing noises in listening devices caused by changing circuits associated therewith

Info

Publication number
GB147948A
GB147948A GB2000320A GB2000320A GB147948A GB 147948 A GB147948 A GB 147948A GB 2000320 A GB2000320 A GB 2000320A GB 2000320 A GB2000320 A GB 2000320A GB 147948 A GB147948 A GB 147948A
Authority
GB
United Kingdom
Prior art keywords
arrangement
associated therewith
circuits associated
listening devices
short
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
GB2000320A
Other languages
English (en)
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.)
Signal GmbH
Original Assignee
Signal GmbH
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 Signal GmbH filed Critical Signal GmbH
Publication of GB147948A publication Critical patent/GB147948A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Telephone Set Structure (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB2000320A 1917-03-21 1920-07-09 Arrangement for avoiding disturbing noises in listening devices caused by changing circuits associated therewith Expired GB147948A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES46449D DE363173C (de) 1917-03-21 1917-03-21 Einrichtung zur Vermeidung des Knackens im Telephon beim Einschalten verschiedener, mit dem Telephon transformatorisch verbundener Geber
DES46492D DE365295C (de) 1917-03-21 1917-03-31 Einrichtung zur Vermeidung des Knackens im Telephon beim Einschalten verschiedener, mit dem Telephon transformatorisch verbundener Geber

Publications (1)

Publication Number Publication Date
GB147948A true GB147948A (en) 1921-09-22

Family

ID=25752307

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2000320A Expired GB147948A (en) 1917-03-21 1920-07-09 Arrangement for avoiding disturbing noises in listening devices caused by changing circuits associated therewith
GB2036520A Expired GB148418A (en) 1917-03-21 1920-07-10 Arrangement for avoiding disturbing noises in listening devices caused by changing circuits associated therewith

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2036520A Expired GB148418A (en) 1917-03-21 1920-07-10 Arrangement for avoiding disturbing noises in listening devices caused by changing circuits associated therewith

Country Status (4)

Country Link
DE (2) DE363173C (de)
FR (1) FR526539A (de)
GB (2) GB147948A (de)
NL (1) NL9296C (de)

Also Published As

Publication number Publication date
GB148418A (en) 1921-09-22
NL9296C (de) 1923-08-15
DE365295C (de) 1922-12-14
DE363173C (de) 1922-11-04
FR526539A (fr) 1921-10-10

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