GB489849A - Improvements in and relating to thermionic valve oscillators and amplifiers - Google Patents

Improvements in and relating to thermionic valve oscillators and amplifiers

Info

Publication number
GB489849A
GB489849A GB17237A GB17237A GB489849A GB 489849 A GB489849 A GB 489849A GB 17237 A GB17237 A GB 17237A GB 17237 A GB17237 A GB 17237A GB 489849 A GB489849 A GB 489849A
Authority
GB
United Kingdom
Prior art keywords
valve
grid
condenser
resistance
coupled
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
GB17237A
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.)
NORMAN LAWRENCE YATES FISH
Muirhead and Co Ltd
Original Assignee
NORMAN LAWRENCE YATES FISH
Muirhead and Co 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 NORMAN LAWRENCE YATES FISH, Muirhead and Co Ltd filed Critical NORMAN LAWRENCE YATES FISH
Priority to GB17237A priority Critical patent/GB489849A/en
Publication of GB489849A publication Critical patent/GB489849A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
    • H03B5/22—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator active element in amplifier being vacuum tube

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Meat, Egg Or Seafood Products (AREA)

Abstract

489,849. Valve generating circuits. FISH, N. L. YATES-, WILLANS, P. W., and MUIRHEAD & CO., Ltd. Jan. 4, 1937, No. 172. [Class 40 (v)] Reciprocally coupled valves coupled by non-resonant combinations of reactance and resistance elements are used to generate or selectively amplify oscillations. In Fig. 1, the plate of valve 1 is coupled to the grid of valve (i by coupling condenser 3, grid leak 4 and resistance 5 whilst condenser 11 connects the grid and cathode of valve 6. The plate of valve 6 is coupled to the grid of valve 1 by condenser 8, and resistance 10 connects the grid of valve 1 to the cathode of valve 6. By altering the values of condensers 8 and 11, the frequency of the oscillations can be varied. Reaction is controlled by adjustment of the tapping on resistance 2. An additional valve 13, Fig. 2, may be provided to prevent the grid current which tends to flow in valve 1 from loading the valve 6. In the circuit illustrated, automatic grid bias is provided by resistances 16 and condensers 17 whilst the anode of valve 1 is connected to earth through condenser 18 and resistance 19. A padding condenser 20 in parallel to condenser 8 is also provided. Oscillations of from 20-20,000 cycles can be obtained and sizes of components are given in the Specification. Embodiments using pentode valves are also described. Specification 395,596 is referred to.
GB17237A 1937-01-04 1937-01-04 Improvements in and relating to thermionic valve oscillators and amplifiers Expired GB489849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17237A GB489849A (en) 1937-01-04 1937-01-04 Improvements in and relating to thermionic valve oscillators and amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17237A GB489849A (en) 1937-01-04 1937-01-04 Improvements in and relating to thermionic valve oscillators and amplifiers

Publications (1)

Publication Number Publication Date
GB489849A true GB489849A (en) 1938-08-04

Family

ID=9699670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17237A Expired GB489849A (en) 1937-01-04 1937-01-04 Improvements in and relating to thermionic valve oscillators and amplifiers

Country Status (1)

Country Link
GB (1) GB489849A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451858A (en) * 1945-01-26 1948-10-19 Gen Electric Controlled frequency oscillator
US2452586A (en) * 1944-03-23 1948-11-02 Sperry Corp Phase shift circuits
US2577235A (en) * 1945-06-05 1951-12-04 Murihead And Company Ltd Thermionic valve oscillator
US2589816A (en) * 1945-02-08 1952-03-18 Us Sec War Balanced series loop sine wave oscillator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452586A (en) * 1944-03-23 1948-11-02 Sperry Corp Phase shift circuits
US2451858A (en) * 1945-01-26 1948-10-19 Gen Electric Controlled frequency oscillator
US2589816A (en) * 1945-02-08 1952-03-18 Us Sec War Balanced series loop sine wave oscillator
US2577235A (en) * 1945-06-05 1951-12-04 Murihead And Company Ltd Thermionic valve oscillator

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