GB681829A - Improvements in or relating to amplifiers employing semi-conductors - Google Patents

Improvements in or relating to amplifiers employing semi-conductors

Info

Publication number
GB681829A
GB681829A GB604149A GB604149A GB681829A GB 681829 A GB681829 A GB 681829A GB 604149 A GB604149 A GB 604149A GB 604149 A GB604149 A GB 604149A GB 681829 A GB681829 A GB 681829A
Authority
GB
United Kingdom
Prior art keywords
emitter
electrodes
collector
electrode
controller
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
GB604149A
Inventor
Charles De Boismaison White
Kenneth Albert Matthews
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 to BE558880D priority Critical patent/BE558880A/xx
Priority to BE505195D priority patent/BE505195A/xx
Priority to NL7512441.A priority patent/NL162732B/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US152302A priority patent/US2701281A/en
Priority claimed from GB21041/50A external-priority patent/GB692802A/en
Priority to GB21041/50A priority patent/GB692802A/en
Priority to FR1033789D priority patent/FR1033789A/en
Priority to FR61931D priority patent/FR61931E/en
Priority to CH316530D priority patent/CH316530A/en
Priority to US243557A priority patent/US2624016A/en
Priority to DEJ4541A priority patent/DE939699C/en
Publication of GB681829A publication Critical patent/GB681829A/en
Priority to US472109A priority patent/US2918627A/en
Priority to FR69045D priority patent/FR69045E/en
Priority to FR70708D priority patent/FR70708E/en
Priority to US595378A priority patent/US2830257A/en
Priority to FR72080D priority patent/FR72080E/en
Priority to GB20481/57A priority patent/GB809214A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H03F3/14—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with amplifying devices having more than three electrodes or more than two PN junctions

Abstract

681,829. Semi-conductor amplifiers. STANDARD TELEPHONES & CABLES, Ltd. March 10, 1950 [April 1, 1949], No. 6041/50. Divided out of 681,810. Class 40 (iv). [Also in Group XL (c)] An electric amplifying circuit comprises a semi-conductor body 1 having emitter 3, collector 4 and base 2 electrodes, and an additional cat's-whisker controller electrode 5 in contact with the semi-conductor surface at a distance from the collector and emitter electrodes which exceeds the distance between these electrodes, the controller electrode 5 being biased in the same direction as the emitter and spaced such that the gain can be adjusted by varying the controller current. The emitter is biased in the good conducting direction, and the collector is biased in the reverse direction, the input circuit being connected between the emitter 3 and base 2 electrodes, and the output circuit between the collector 4 and base 2 electrodes. The arrangement increases the amplification of the device. A variable resistance 11 may be included to control the current in the controller electrode circuit, which serves to control the amplification and the input and output impedances of the device. The controller electrode may be displaced in the direction normal to the line joining the emitter and collector electrodes. The base electrode may be provided by an additional cat's-whisker electrode as described in Specification 681,810. Specification 681,809 also is referred to.
GB604149A 1949-04-01 1949-04-01 Improvements in or relating to amplifiers employing semi-conductors Expired GB681829A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
BE558880D BE558880A (en) 1949-04-01
BE505195D BE505195A (en) 1949-04-01
NL7512441.A NL162732B (en) 1949-04-01 GAS HEATED STEAM BOILER.
US152302A US2701281A (en) 1949-04-01 1950-03-28 Amplifier employing semiconductor
GB21041/50A GB692802A (en) 1949-04-01 1950-08-25 Improvements in or relating to electric trigger circuits
FR1033789D FR1033789A (en) 1949-04-01 1951-03-09 Triodes using crystals such as germanium crystals
FR61931D FR61931E (en) 1949-04-01 1951-07-26 Triodes using crystals such as germanium crystals
CH316530D CH316530A (en) 1949-04-01 1951-08-09 Two-position tripping electrical circuit
US243557A US2624016A (en) 1949-04-01 1951-08-24 Electric trigger circuits
DEJ4541A DE939699C (en) 1949-04-01 1951-08-25 Bistable multivibrator with crystal triode
US472109A US2918627A (en) 1949-04-01 1954-11-30 Temperature-compensated directcurrent amplifier
FR69045D FR69045E (en) 1949-04-01 1955-11-29 Triodes using crystals such as germanium crystals
FR70708D FR70708E (en) 1949-04-01 1956-01-26 Triodes using crystals such as germanium crystals
US595378A US2830257A (en) 1949-04-01 1956-07-02 Temperature-compensated directcurrent transistor amplifier
FR72080D FR72080E (en) 1949-04-01 1957-06-28 Triodes using crystals such as germanium crystals
GB20481/57A GB809214A (en) 1949-04-01 1957-06-28 Temperature-compensated direct-current amplifier

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB21041/50A GB692802A (en) 1949-04-01 1950-08-25 Improvements in or relating to electric trigger circuits
US472109A US2918627A (en) 1949-04-01 1954-11-30 Temperature-compensated directcurrent amplifier
US595378A US2830257A (en) 1949-04-01 1956-07-02 Temperature-compensated directcurrent transistor amplifier

Publications (1)

Publication Number Publication Date
GB681829A true GB681829A (en) 1952-10-29

Family

ID=27258989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB604149A Expired GB681829A (en) 1949-04-01 1949-04-01 Improvements in or relating to amplifiers employing semi-conductors

Country Status (1)

Country Link
GB (1) GB681829A (en)

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