GB776589A - Improvements in or relating to transistor amplifiers - Google Patents

Improvements in or relating to transistor amplifiers

Info

Publication number
GB776589A
GB776589A GB22011/55A GB2201155A GB776589A GB 776589 A GB776589 A GB 776589A GB 22011/55 A GB22011/55 A GB 22011/55A GB 2201155 A GB2201155 A GB 2201155A GB 776589 A GB776589 A GB 776589A
Authority
GB
United Kingdom
Prior art keywords
collector
inductor
capacitor
transistor
resistor
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
GB22011/55A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB776589A publication Critical patent/GB776589A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/191—Tuned amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/72—Indexing scheme relating to amplifiers the amplifier stage being a common gate configuration MOSFET

Abstract

776,589. Transistor selective amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 29, 1955 [Aug. 4, 1954], No. 22011/55. Class 40(6) In a circuit employing a capacitor C and inductor L between the emitter and base of a transistor 2 Fig. 1 tuned to the signal frequency undesired feed back is reduced by feeding part of the collector voltage across resistor R to a point between the inductor and capacitor. To overcome the effects of the stray capacity 6, Fig. 2 resistor R may be returned to a tap on the collector load 5 and a further capacitor C<SP>1</SP> may be used. In a modification, Fig. 3 (not shown) a small inductor is included in the base lead which also reduces the effect of the internal collector resistance and collector capacity.
GB22011/55A 1954-08-04 1955-07-29 Improvements in or relating to transistor amplifiers Expired GB776589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL332013X 1954-08-04

Publications (1)

Publication Number Publication Date
GB776589A true GB776589A (en) 1957-06-12

Family

ID=19784407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22011/55A Expired GB776589A (en) 1954-08-04 1955-07-29 Improvements in or relating to transistor amplifiers

Country Status (6)

Country Link
BE (1) BE540278A (en)
CH (1) CH332013A (en)
DE (1) DE1013718B (en)
FR (1) FR1128811A (en)
GB (1) GB776589A (en)
NL (2) NL189723B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471316A (en) * 1981-02-10 1984-09-11 Pass Matvei I Electric oscillation generator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE518900A (en) * 1952-06-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471316A (en) * 1981-02-10 1984-09-11 Pass Matvei I Electric oscillation generator

Also Published As

Publication number Publication date
FR1128811A (en) 1957-01-10
CH332013A (en) 1958-08-15
NL88567C (en)
DE1013718B (en) 1957-08-14
BE540278A (en)
NL189723B (en)

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