GB482241A - Improvements in or relating to carrier telephony systems - Google Patents

Improvements in or relating to carrier telephony systems

Info

Publication number
GB482241A
GB482241A GB18068/37A GB1806837A GB482241A GB 482241 A GB482241 A GB 482241A GB 18068/37 A GB18068/37 A GB 18068/37A GB 1806837 A GB1806837 A GB 1806837A GB 482241 A GB482241 A GB 482241A
Authority
GB
United Kingdom
Prior art keywords
impedance
june
relating
rectifier
electrode
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
GB18068/37A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB482241A publication Critical patent/GB482241A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/54—Balanced modulators, e.g. bridge type, ring type or double balanced type
    • H03C1/56—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising variable two-pole elements only
    • H03C1/58—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising variable two-pole elements only comprising diodes

Landscapes

  • Amplitude Modulation (AREA)

Abstract

482,241. Modulating and demodulating apparatus. SIEMENS & HALSKE AKT.-GES. June 29, 1937, No. 18068. Convention date, June 30, 1936. Drawings to Specification. [Class 40 (v)] In known modulating or demodulating circuits employing two-electrode rectifiers an ohmic resistance large compared with the impedance of the rectifier in the pass direction and small compared with its impedance in the blocking direction is connected in series with each two-electrode rectifier. The resultant impedance of the series combination approaches more nearly to that of the ideal non-linear impedance for use in modulator circuits in which the impedance in one direction is infinite and in the other direction is of a constant finite value. Specifications 423,875 and 435,201 are referred to.
GB18068/37A 1936-06-30 1937-06-29 Improvements in or relating to carrier telephony systems Expired GB482241A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE482241X 1936-06-30

Publications (1)

Publication Number Publication Date
GB482241A true GB482241A (en) 1938-03-25

Family

ID=6542801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18068/37A Expired GB482241A (en) 1936-06-30 1937-06-29 Improvements in or relating to carrier telephony systems

Country Status (1)

Country Link
GB (1) GB482241A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759966C (en) * 1940-07-12 1953-03-02 Siemens & Halske A G Double push-pull modulator
US2907887A (en) * 1955-12-15 1959-10-06 Honeywell Regulator Co Electrical apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759966C (en) * 1940-07-12 1953-03-02 Siemens & Halske A G Double push-pull modulator
US2907887A (en) * 1955-12-15 1959-10-06 Honeywell Regulator Co Electrical apparatus

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Eastland Senator James O. Eastland to Bryce N. Harlow, 15 April 1969