GB149018A - Improved method of generating electric oscillations - Google Patents

Improved method of generating electric oscillations

Info

Publication number
GB149018A
GB149018A GB494318A GB494318A GB149018A GB 149018 A GB149018 A GB 149018A GB 494318 A GB494318 A GB 494318A GB 494318 A GB494318 A GB 494318A GB 149018 A GB149018 A GB 149018A
Authority
GB
United Kingdom
Prior art keywords
grids
circuit
oscillations
closed
oscillatory circuit
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
GB494318A
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 GB494318A priority Critical patent/GB149018A/en
Publication of GB149018A publication Critical patent/GB149018A/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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/445—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

149,018. Eccles, W. H., and Jordan, F. W. March 20, 1918. Electric oscillations, producing.-In wireless transmission systems of the kind in which oscillations are generated by two three-electrode valves, the closed oscillatory circuit is acted upon by each valve and a source of voltage symmetrically in every half period. Various methods of carrying out this principle of the invention are described. As shown in Figs. 2 and 3, the grids of the two valves are connected by a coil inductively coupled to the closed oscillatory circuit CL. The grid leak resistance R maintains the grids at a potential found advantageous by trial. The anode circuits are in parallel and are connected in series with a high tension battery. An increase of one anode current applies to the closed circuit CL an impulse in one direction, and an increase of the other an impulse in the opposite direction. These variations in the closed circuit are induced in the grid coil and cause the potential of each grid, and consequently the resistance of each valve, to vary symmetrically in opposite directions in every half period with such phase relation as to maintain the oscillations in the circuit CL. As shown in Fig. 2, the coupling between the two anode circuits and the oscillatory circuit is direct. A method in which the anode current acts by mutual induction on the oscillatory circuit is indicated in Fig. 3. Fig. 4 shows a method in which resistance coupling is employed. In Fig. 5 a method of employing condenser coupling is shown. Instead of using two triodes, one tube possessing a single plate, two grids and two filaments, or alternatively one filament, two grids, and two plates, may be employed to obtain the desired symmetrical action. Reference has been directed by the Comptroller to Specification 147,851.
GB494318A 1918-03-20 1918-03-20 Improved method of generating electric oscillations Expired GB149018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB494318A GB149018A (en) 1918-03-20 1918-03-20 Improved method of generating electric oscillations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB494318A GB149018A (en) 1918-03-20 1918-03-20 Improved method of generating electric oscillations

Publications (1)

Publication Number Publication Date
GB149018A true GB149018A (en) 1920-08-12

Family

ID=9786764

Family Applications (1)

Application Number Title Priority Date Filing Date
GB494318A Expired GB149018A (en) 1918-03-20 1918-03-20 Improved method of generating electric oscillations

Country Status (1)

Country Link
GB (1) GB149018A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438595A (en) * 1944-05-03 1948-03-30 Girdler Corp High-frequency generator
US2540275A (en) * 1945-05-10 1951-02-06 Mittelmann Eugene Oscillator
DE1044162B (en) * 1954-09-30 1958-11-20 Ibm Deutschland Astable trigger circuit with surface transistors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438595A (en) * 1944-05-03 1948-03-30 Girdler Corp High-frequency generator
US2540275A (en) * 1945-05-10 1951-02-06 Mittelmann Eugene Oscillator
DE1044162B (en) * 1954-09-30 1958-11-20 Ibm Deutschland Astable trigger circuit with surface transistors

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