GB1078819A - Circuit arrangement for impressing two inversely varying direct currents, the sum of which is constant, on two different resistors - Google Patents

Circuit arrangement for impressing two inversely varying direct currents, the sum of which is constant, on two different resistors

Info

Publication number
GB1078819A
GB1078819A GB30906/64A GB3090664A GB1078819A GB 1078819 A GB1078819 A GB 1078819A GB 30906/64 A GB30906/64 A GB 30906/64A GB 3090664 A GB3090664 A GB 3090664A GB 1078819 A GB1078819 A GB 1078819A
Authority
GB
United Kingdom
Prior art keywords
transistor
impressing
sum
constant
circuit arrangement
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
GB30906/64A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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
Priority claimed from DET19777A external-priority patent/DE1118831B/en
Priority claimed from DET21225A external-priority patent/DE1138432B/en
Priority claimed from DET24432A external-priority patent/DE1175281B/en
Application filed by Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1078819A publication Critical patent/GB1078819A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Control Of Electrical Variables (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1,078,819. Pilot controlled a.g.c. TELE. FUNKEN PATENTVERWERTUNGS. G.m.b.H. Aug. 4, 1964 [Aug. 6, 1963], No. 30906/64. Addition to 992,663. Heading H4R. The heater currents of a pair of thermistors in a pilot controlled a.g.c. system or in a cosine equalizer system, e.g. of Specification 992,663, are varied inversely by connecting the heaters as collector loads R5 and R6 in a common emitter differential transistor amplifier. The control signal from unit EV is applied to transistor Ts1 while the base potential of transistor Ts2 is held at a reference potential by Zener diode D 1 . The bias on transistor Ts2 is arranged, by resistors R 7 , R 2 , and R 1 , to operate the circuit on the linear portion of its characteristic.
GB30906/64A 1961-03-10 1964-08-04 Circuit arrangement for impressing two inversely varying direct currents, the sum of which is constant, on two different resistors Expired GB1078819A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DET19777A DE1118831B (en) 1961-03-10 1961-03-10 Electronic setting device, especially for setting cosine equalizers in multi-channel carrier frequency transmission lines
DET21225A DE1138432B (en) 1961-03-10 1961-12-05 Electronic adjustment device, especially for level control in multi-channel carrier frequency transmission lines
DET24432A DE1175281B (en) 1963-08-06 1963-08-06 Circuit arrangement for impressing two oppositely variable DC currents, the sum of which is constant, into two different resistances, in particular for use in pilot-controlled level regulators in multi-channel carrier frequency wide-area systems

Publications (1)

Publication Number Publication Date
GB1078819A true GB1078819A (en) 1967-08-09

Family

ID=27213064

Family Applications (2)

Application Number Title Priority Date Filing Date
GB6725/62A Expired GB992663A (en) 1961-03-10 1962-02-21 A control arrangement for the current which passes through a regulating resistor
GB30906/64A Expired GB1078819A (en) 1961-03-10 1964-08-04 Circuit arrangement for impressing two inversely varying direct currents, the sum of which is constant, on two different resistors

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB6725/62A Expired GB992663A (en) 1961-03-10 1962-02-21 A control arrangement for the current which passes through a regulating resistor

Country Status (2)

Country Link
FR (1) FR1397001A (en)
GB (2) GB992663A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2160321B1 (en) * 1971-11-19 1974-05-31 Cit Alcatel

Also Published As

Publication number Publication date
FR1397001A (en) 1965-04-23
GB992663A (en) 1965-05-19

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