GB324942A - Improvements in or relating to inter-valve coupling devices for speech-amplifying apparatus and the like - Google Patents

Improvements in or relating to inter-valve coupling devices for speech-amplifying apparatus and the like

Info

Publication number
GB324942A
GB324942A GB3077628A GB3077628A GB324942A GB 324942 A GB324942 A GB 324942A GB 3077628 A GB3077628 A GB 3077628A GB 3077628 A GB3077628 A GB 3077628A GB 324942 A GB324942 A GB 324942A
Authority
GB
United Kingdom
Prior art keywords
inter
speech
relating
coupling devices
amplifying apparatus
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
GB3077628A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3077628A priority Critical patent/GB324942A/en
Publication of GB324942A publication Critical patent/GB324942A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/02—Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

324,942. Douglas, A. L. M., and Ward, G. E. Oct. 24, 1928. Transformers.-An inter-valve low-frequency transformer comprises two tightly-coupled coils A, B of high-resistance wire with no iron core, the coils being connected by a condenser C.
GB3077628A 1928-10-24 1928-10-24 Improvements in or relating to inter-valve coupling devices for speech-amplifying apparatus and the like Expired GB324942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3077628A GB324942A (en) 1928-10-24 1928-10-24 Improvements in or relating to inter-valve coupling devices for speech-amplifying apparatus and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3077628A GB324942A (en) 1928-10-24 1928-10-24 Improvements in or relating to inter-valve coupling devices for speech-amplifying apparatus and the like

Publications (1)

Publication Number Publication Date
GB324942A true GB324942A (en) 1930-01-24

Family

ID=10312960

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3077628A Expired GB324942A (en) 1928-10-24 1928-10-24 Improvements in or relating to inter-valve coupling devices for speech-amplifying apparatus and the like

Country Status (1)

Country Link
GB (1) GB324942A (en)

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