GB519435A - Improvements in electrical impedance networks - Google Patents

Improvements in electrical impedance networks

Info

Publication number
GB519435A
GB519435A GB2766138A GB2766138A GB519435A GB 519435 A GB519435 A GB 519435A GB 2766138 A GB2766138 A GB 2766138A GB 2766138 A GB2766138 A GB 2766138A GB 519435 A GB519435 A GB 519435A
Authority
GB
United Kingdom
Prior art keywords
terminals
tube
attenuator
conducting
cylinder
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
GB2766138A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2766138A priority Critical patent/GB519435A/en
Publication of GB519435A publication Critical patent/GB519435A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/22—Attenuating devices

Landscapes

  • Measuring Leads Or Probes (AREA)

Abstract

519,435. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd., BARNARD, R. M., and JARVIS, F. L. J. Sept. 22, 1938, No. 27661. [Class 40 (iii)] An attenuator for very high frequencies comprises a cylinder of solid or liquid semiconducting material encased in a conducting tube and provided with conducting terminals at the centres of the ends. The attenuation is a function of the ratio of the length to the diameter of the outer conductor and the impedance is a function of the ratio of the effective diameter of the inner conductor, as determined by the size of the terminals to that of the outer conductor. The tube and the terminals may be applied by sputtering. In a modification for balanced transmission lines the attenuator consists of a semi-conducting cylinder with two terminals suitably spaced from the centre at each end. A group of attenuators may be mounted on the surface of a fluted brass cylinder 4, Fig. 2, which can be rotated to connect a particular attenuator to the line by means of contact studs connected to the respective terminals and engaged by a stud 12 carried by a spring loaded piece of co-axial cable. In the arrangement shown in Fig. 5, a mixture of glycerine and colloidal carbon is contained in a two-part tube 14 the effective length of which can be adjusted by a nut 15. The terminals 22 are adjustable into and out of the liquid. The tube is kept full with the aid of an adjustable plug 27.
GB2766138A 1938-09-22 1938-09-22 Improvements in electrical impedance networks Expired GB519435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2766138A GB519435A (en) 1938-09-22 1938-09-22 Improvements in electrical impedance networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2766138A GB519435A (en) 1938-09-22 1938-09-22 Improvements in electrical impedance networks

Publications (1)

Publication Number Publication Date
GB519435A true GB519435A (en) 1940-03-27

Family

ID=10263200

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2766138A Expired GB519435A (en) 1938-09-22 1938-09-22 Improvements in electrical impedance networks

Country Status (1)

Country Link
GB (1) GB519435A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523391A (en) * 1942-11-28 1950-09-26 Hartford Nat Bank & Trust Co High-frequency damping tube
DE753319C (en) * 1941-04-06 1954-08-23 Aeg Frequency-independent attenuator in the form of a coaxial line
US3096495A (en) * 1960-11-07 1963-07-02 Stoddart Aircraft Radio Co Inc Coaxial element turret
DE1206042B (en) * 1963-07-25 1965-12-02 Siemens Ag Attenuation or delay element in coaxial design

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753319C (en) * 1941-04-06 1954-08-23 Aeg Frequency-independent attenuator in the form of a coaxial line
US2523391A (en) * 1942-11-28 1950-09-26 Hartford Nat Bank & Trust Co High-frequency damping tube
US3096495A (en) * 1960-11-07 1963-07-02 Stoddart Aircraft Radio Co Inc Coaxial element turret
DE1206042B (en) * 1963-07-25 1965-12-02 Siemens Ag Attenuation or delay element in coaxial design

Similar Documents

Publication Publication Date Title
GB459580A (en) Improvements in or relating to high frequency coaxial cable transmission systems and apparatus therefor
GB579665A (en) Improvements in and relating to impedance matching transformers
GB519435A (en) Improvements in electrical impedance networks
GB605198A (en) Improvements in or relating to attenuating apparatus for high-frequency electromagnetic energy
GB488741A (en) Shielded electric cable system
GB926276A (en) Improvements in coupling members for coaxial transmission lines
US2567379A (en) Terminal device for absorbing electromagnetic energy
GB573451A (en) Electric attenuators
GB691802A (en) Improved electric coupling devices
GB695389A (en) Improvements in and connected with the terminal ends of electric conductors
US2490622A (en) High-frequency transmission line or cable and connector therefor
GB778781A (en) Improvements in electric plugs for plug and socket connections
GB702363A (en) Electrical switch for selectively connecting coaxial transmission lines
GB352011A (en) Improvements in or relating to electric carrier wave transmission systems
GB513287A (en) Improvements in or relating to switching means for interconnecting coaxial conductors
GB572739A (en) Improvements in impedance transformers comprising transmission lines
GB914498A (en) Improvements in or relating to the jointing of electrical coaxial cables
GB961870A (en) Signal energy take-off device
GB609930A (en) An improved terminal plug for small gauge screened electric cables
GB1184187A (en) Coaxial Aerial Isolator
GB514454A (en) Improvements in or relating to attenuators for electric currents and to connecting means therefor
GB628696A (en) Improvements in or relating to connecting devices for coaxial cables
GB701359A (en) Method of balancing telephone cables, means of carrying out same and cables balanced by said method
GB256458A (en) Improvements in or relating to the reduction of losses in transmission systems
GB722894A (en) Improvements in electric plug and socket connectors