GB238691A - Improvements in apparatus for obtaining substantially steady heating effects from alternating-current for heating the cathodes of thermionic valves or for other purposes - Google Patents

Improvements in apparatus for obtaining substantially steady heating effects from alternating-current for heating the cathodes of thermionic valves or for other purposes

Info

Publication number
GB238691A
GB238691A GB1878525A GB1878525A GB238691A GB 238691 A GB238691 A GB 238691A GB 1878525 A GB1878525 A GB 1878525A GB 1878525 A GB1878525 A GB 1878525A GB 238691 A GB238691 A GB 238691A
Authority
GB
United Kingdom
Prior art keywords
current
heating
alternating
cathodes
purposes
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
GB1878525A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB1878525A priority Critical patent/GB238691A/en
Publication of GB238691A publication Critical patent/GB238691A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H04B1/1623—Supply circuits using tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Induction Heating (AREA)

Abstract

238,691. Brown, W. J., Robinson, E. Y., Churcher, B. A. G., and Metropolitan-Vickers Electrical Co., Ltd. May 15, 1924. Thermionic valve circuits. - Apparatus for supplying a current of substantially constant heating value, for example to the cathode 14 of a thermionic valve for connection in series with an alternating-current circuit, comprises a current-transformer 12, a resistance 15 having a positive temperature coefficient in series with the secondary 13 and with the cathode or other heating circuit, and a resistance 16 having a negative coefficient in parallel with the cathode. The core of the transformer may be unsaturated magnetically, but is preferably saturated at the desired output.
GB1878525A 1924-05-15 1924-05-15 Improvements in apparatus for obtaining substantially steady heating effects from alternating-current for heating the cathodes of thermionic valves or for other purposes Expired GB238691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1878525A GB238691A (en) 1924-05-15 1924-05-15 Improvements in apparatus for obtaining substantially steady heating effects from alternating-current for heating the cathodes of thermionic valves or for other purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1878525A GB238691A (en) 1924-05-15 1924-05-15 Improvements in apparatus for obtaining substantially steady heating effects from alternating-current for heating the cathodes of thermionic valves or for other purposes

Publications (1)

Publication Number Publication Date
GB238691A true GB238691A (en) 1925-08-17

Family

ID=10118382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1878525A Expired GB238691A (en) 1924-05-15 1924-05-15 Improvements in apparatus for obtaining substantially steady heating effects from alternating-current for heating the cathodes of thermionic valves or for other purposes

Country Status (1)

Country Link
GB (1) GB238691A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE738990C (en) * 1935-10-10 1943-09-08 Siemens App Und Maschinen G M Device for suppressing interference when transmitting signals of only one, but variable frequency
DE1048961B (en) * 1956-10-10 1959-01-22 Akad Wissenschaften Ddr Circuit arrangement for stabilizing the power supplied to a consumer when the resistance changes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE738990C (en) * 1935-10-10 1943-09-08 Siemens App Und Maschinen G M Device for suppressing interference when transmitting signals of only one, but variable frequency
DE1048961B (en) * 1956-10-10 1959-01-22 Akad Wissenschaften Ddr Circuit arrangement for stabilizing the power supplied to a consumer when the resistance changes

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