GB258315A - Improvements in thermionic amplifiers - Google Patents

Improvements in thermionic amplifiers

Info

Publication number
GB258315A
GB258315A GB12972/25A GB1297225A GB258315A GB 258315 A GB258315 A GB 258315A GB 12972/25 A GB12972/25 A GB 12972/25A GB 1297225 A GB1297225 A GB 1297225A GB 258315 A GB258315 A GB 258315A
Authority
GB
United Kingdom
Prior art keywords
resistances
valves
grid
adjustable
thermionic
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
GB12972/25A
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
Priority to GB12972/25A priority Critical patent/GB258315A/en
Priority to US113370A priority patent/US1622851A/en
Publication of GB258315A publication Critical patent/GB258315A/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
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

258,315. Smith, S. B. May 18, 1925. Thermionic amplifiers.-In a multi-stage thermionic amplifier suitable for operating telegraphic relays &c., an adjustable grid-bias for each of the separate valves is derived from a single common battery B3 through resistances or impedances r1, r2 arranged in parallel with the anode resistances R3. The tapping-points from the battery to the three valves t1, t2, t3 are shown at T1, T2, T3 respectively. The value of the potentiometer resistances r1, r2 should be high in comparison with the anode resistance R3, and the dividing point P leading to the grid is adjustable. A stabilizing condenser C may be connected across the anodes of the valves t1, and t3.
GB12972/25A 1925-05-18 1925-05-18 Improvements in thermionic amplifiers Expired GB258315A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB12972/25A GB258315A (en) 1925-05-18 1925-05-18 Improvements in thermionic amplifiers
US113370A US1622851A (en) 1925-05-18 1926-06-03 Thermionic amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12972/25A GB258315A (en) 1925-05-18 1925-05-18 Improvements in thermionic amplifiers

Publications (1)

Publication Number Publication Date
GB258315A true GB258315A (en) 1926-09-20

Family

ID=10014465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12972/25A Expired GB258315A (en) 1925-05-18 1925-05-18 Improvements in thermionic amplifiers

Country Status (2)

Country Link
US (1) US1622851A (en)
GB (1) GB258315A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE934177C (en) * 1943-12-21 1955-10-13 Fernseh Gmbh Switching arrangement for generating the grid bias for an amplifier tube
FR2008410A1 (en) * 1968-05-13 1970-01-23 Rca Corp

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448771A (en) * 1943-09-23 1948-09-07 Du Mont Allen B Lab Inc Cathode-ray oscillograph circuit
US2600423A (en) * 1948-04-30 1952-06-17 Electrodyne Co Electrical system with output signal varying logarithmically with respect to the input signal
US3096488A (en) * 1961-09-14 1963-07-02 Morton R Lomask Electronic filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE934177C (en) * 1943-12-21 1955-10-13 Fernseh Gmbh Switching arrangement for generating the grid bias for an amplifier tube
FR2008410A1 (en) * 1968-05-13 1970-01-23 Rca Corp

Also Published As

Publication number Publication date
US1622851A (en) 1927-03-29

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