GB987435A - Improvements in or relating to low noise selective amplifiers - Google Patents

Improvements in or relating to low noise selective amplifiers

Info

Publication number
GB987435A
GB987435A GB2548661A GB2548661A GB987435A GB 987435 A GB987435 A GB 987435A GB 2548661 A GB2548661 A GB 2548661A GB 2548661 A GB2548661 A GB 2548661A GB 987435 A GB987435 A GB 987435A
Authority
GB
United Kingdom
Prior art keywords
transistor
relating
low noise
coupled
operating
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
GB2548661A
Inventor
Karlheinz Reinhardt
Gerd Schubert
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.)
Vakutronik VEB
Original Assignee
Vakutronik VEB
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 Vakutronik VEB filed Critical Vakutronik VEB
Priority to GB2548661A priority Critical patent/GB987435A/en
Publication of GB987435A publication Critical patent/GB987435A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F5/00—Amplifiers with both discharge tubes and semiconductor devices as amplifying elements

Abstract

987,435. Transistor amplifying circuits. VAKUTRONIK VEB. July 13, 1961, No. 25486/61. Heading H3T. In a low-noise selective amplifier the input stage is coupled through a tuned transformer 3 to a voltage amplifier comprising a transistor 5 connected in grounded collector configuration D.C. coupled to a transistor 7 connected in grounded emitter configuration. The input stage comprises a valve 1 arranged for operating with anode current and heater voltage below their normal values or a transistor arrangement (not shown) operating with lower collector current than normal. In order to increase the total amplification one or more further voltage amplifiers are used, each comprising two transistors connected as above.
GB2548661A 1961-07-13 1961-07-13 Improvements in or relating to low noise selective amplifiers Expired GB987435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2548661A GB987435A (en) 1961-07-13 1961-07-13 Improvements in or relating to low noise selective amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2548661A GB987435A (en) 1961-07-13 1961-07-13 Improvements in or relating to low noise selective amplifiers

Publications (1)

Publication Number Publication Date
GB987435A true GB987435A (en) 1965-03-31

Family

ID=10228482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2548661A Expired GB987435A (en) 1961-07-13 1961-07-13 Improvements in or relating to low noise selective amplifiers

Country Status (1)

Country Link
GB (1) GB987435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4645768A (en) * 1983-01-21 1987-02-24 Fisons Plc Formulations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4645768A (en) * 1983-01-21 1987-02-24 Fisons Plc Formulations

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