GB269258A - System for producing electrical oscillations - Google Patents

System for producing electrical oscillations

Info

Publication number
GB269258A
GB269258A GB124126A GB124126A GB269258A GB 269258 A GB269258 A GB 269258A GB 124126 A GB124126 A GB 124126A GB 124126 A GB124126 A GB 124126A GB 269258 A GB269258 A GB 269258A
Authority
GB
United Kingdom
Prior art keywords
control circuit
amplifier
grid
circuit
tuned
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
GB124126A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to GB124126A priority Critical patent/GB269258A/en
Publication of GB269258A publication Critical patent/GB269258A/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
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Amplifiers (AREA)

Abstract

269,258. Standard Telephones & Cables, Ltd., (Western Electric Co., Inc.). Jan. 15, 1926. Thermionic amplifiers and generators.-A thermionic system for producing oscillations of constant frequency comprises two tuned circuits one of which determines the frequency and the other the amount of power taken out of the main oscillating device. The control circuit 12, 13 is constructed of mechanically-rigid components and is shielded by a screen 14 from external interference or temperature variations. The control circuit feeds the grid of an amplifier 9 which, in turn, impulses a power amplifier 1 through a resistance coupling. The output of the tube 1 comprises a tuned circuit 3, 4, the mid-point of the inductance 3 being grounded as shown. A feed-back part including a condenser 16, diverts a small part of the energy of the main oscillatory circuit back into the control circuit 12, 13, thus maintaining the latter in oscillation. The value of the capacity 16 is such that it has no appreciable damping effect upon the control circuit. Stabilizing condensuers 6 and 15 are inserted across the plate and grid of the tubes 1, 9 respectively. Fig. 2 shows an equivalent arrangement for generating frequencies suitable for wired-wireless systems, a second resistancecoupled amplifier 21 being inserted between the control and output circuits.
GB124126A 1926-01-15 1926-01-15 System for producing electrical oscillations Expired GB269258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB124126A GB269258A (en) 1926-01-15 1926-01-15 System for producing electrical oscillations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB124126A GB269258A (en) 1926-01-15 1926-01-15 System for producing electrical oscillations

Publications (1)

Publication Number Publication Date
GB269258A true GB269258A (en) 1927-04-19

Family

ID=9718557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB124126A Expired GB269258A (en) 1926-01-15 1926-01-15 System for producing electrical oscillations

Country Status (1)

Country Link
GB (1) GB269258A (en)

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