GB715970A - Improvements in semi-conductor circuits - Google Patents

Improvements in semi-conductor circuits

Info

Publication number
GB715970A
GB715970A GB2310/52A GB231052A GB715970A GB 715970 A GB715970 A GB 715970A GB 2310/52 A GB2310/52 A GB 2310/52A GB 231052 A GB231052 A GB 231052A GB 715970 A GB715970 A GB 715970A
Authority
GB
United Kingdom
Prior art keywords
resistance
series
emitter
circuit
thermistor
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
GB2310/52A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB715970A publication Critical patent/GB715970A/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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only

Abstract

715,970. Semi-conductor amplifier circuits. STALHANE, B. Jan. 28, 1952 [Jan. 31, 1951], No. 2310/52. Class 40 (6) The bias for the emitter 4 in a transistor circuit is obtained from a constantvoltage type of resistance 11 (e.g. a varistor or a thermistor) which is'connected in series with the base electrode 2. The collector 3 is biased by means of battery 5, and the input signal 9 is applied to the emitter 4. Resistance 8 in series with the emitter enables the emitter current to be adjusted to a desired level. A three stage cascade amplifier is described, in which the bias battery is connected across the collectorbase circuits of the three transistors connected in series. A push-pull amplifier circuit is also described. The signal input circuit may be connected in parallel with the biasing circuit comprising resistance 8; and a linear resistance may be connected in series with a thermistor to provide the constant-voltage resistsance 11. The constant-voltage resistance may consist of silicon carbide, selenium or copper oxide dry plate rectifiers, or varistors of the type described in Specification 589,574, [Group XXXVI], which provide a large shunt capacity. Specification 694,025 also is referred to.
GB2310/52A 1951-01-31 1952-01-28 Improvements in semi-conductor circuits Expired GB715970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE715970X 1951-01-31

Publications (1)

Publication Number Publication Date
GB715970A true GB715970A (en) 1954-09-22

Family

ID=20315842

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2310/52A Expired GB715970A (en) 1951-01-31 1952-01-28 Improvements in semi-conductor circuits

Country Status (4)

Country Link
FR (1) FR1049966A (en)
GB (1) GB715970A (en)
NL (1) NL167001B (en)
SE (1) SE140501C1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032788B (en) * 1954-11-25 1958-06-26 Philips Nv Transistor amplifier with operating point stabilization
DE1069195B (en) * 1959-11-19 Siernens-Schuckertwerke Aktiengesellschaft, Berlin und Erlangen Transistor stage in emitter circuit with measures to compensate for temperature-related changes in their transmission properties
US3028531A (en) * 1957-07-29 1962-04-03 Danly Mach Specialties Inc Automatic shut height motor control circuit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE527086A (en) * 1953-03-09
US2848564A (en) * 1954-07-27 1958-08-19 Gen Electric Temperature stabilized transistor amplifier
US2887540A (en) * 1954-09-20 1959-05-19 Rca Corp Temperature-compensated transistor biasing circuits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069195B (en) * 1959-11-19 Siernens-Schuckertwerke Aktiengesellschaft, Berlin und Erlangen Transistor stage in emitter circuit with measures to compensate for temperature-related changes in their transmission properties
DE1032788B (en) * 1954-11-25 1958-06-26 Philips Nv Transistor amplifier with operating point stabilization
US3028531A (en) * 1957-07-29 1962-04-03 Danly Mach Specialties Inc Automatic shut height motor control circuit

Also Published As

Publication number Publication date
NL167001B (en)
SE140501C1 (en) 1953-05-26
FR1049966A (en) 1954-01-04

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