GB335009A - - Google Patents

Info

Publication number
GB335009A
GB335009A GB23667/29A GB2366729A GB335009A GB 335009 A GB335009 A GB 335009A GB 23667/29 A GB23667/29 A GB 23667/29A GB 2366729 A GB2366729 A GB 2366729A GB 335009 A GB335009 A GB 335009A
Authority
GB
United Kingdom
Prior art keywords
modulating
anode
grid
load
grids
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
GB23667/29A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB335009A publication Critical patent/GB335009A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/02—Details
    • H03D1/06—Modifications of demodulators to reduce distortion, e.g. by negative feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microwave Tubes (AREA)
  • Secondary Cells (AREA)
  • Details Of Television Scanning (AREA)

Abstract

335,009. Telefonaktiebolaget L. M. Ericsson. Oct. 1, 1928, [Convention date]. Thermionic detectors and modulating systems. -In a modulating or de-modulating circuit having two valves with push-pull connected grids and parallel connected anodes, the reaction of the unode load upon the control voltage is com. pensated by the transference from the anode circuit to each grid, of a compensating voltage of the same phase and amplitude. The input to the grids 6, 6<1>, is taken from the ends of an impedance 11, the tapping 12 of which is connected to the grid bias battery 10, through a coil 13 coupled to the anode coil 8. By a mathematical treatment it is shown that as a modulating system, the device removes certain harmonic frequencies normaIly produced by the anode load, and the dynamic characteristic of the device is made equivalent to the static characteristic. The device may function to suppress the carrier frequency. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification using screen-grid valves for neutralizing the reaction of the anode load upon the control voltages. This subject-matter does not appear in the Specification as accepted.
GB23667/29A 1928-10-01 1929-08-01 Expired GB335009A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE335009T 1928-10-01

Publications (1)

Publication Number Publication Date
GB335009A true GB335009A (en) 1930-09-18

Family

ID=31944982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23667/29A Expired GB335009A (en) 1928-10-01 1929-08-01

Country Status (5)

Country Link
US (1) US1771021A (en)
DE (1) DE585809C (en)
FR (1) FR679886A (en)
GB (1) GB335009A (en)
NL (1) NL29929C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB470085A (en) * 1936-02-08 1937-08-09 Marconi Wireless Telegraph Co Improvements in or relating to electron discharge device circuit arrangements
US3136866A (en) * 1952-05-27 1964-06-09 Ampex Tape recorder circuit

Also Published As

Publication number Publication date
DE585809C (en) 1933-10-13
NL29929C (en)
FR679886A (en) 1930-04-18
US1771021A (en) 1930-07-22

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