GB520460A - Improvements in or relating to means for generating electrical saw-tooth oscillations - Google Patents

Improvements in or relating to means for generating electrical saw-tooth oscillations

Info

Publication number
GB520460A
GB520460A GB3145838A GB3145838A GB520460A GB 520460 A GB520460 A GB 520460A GB 3145838 A GB3145838 A GB 3145838A GB 3145838 A GB3145838 A GB 3145838A GB 520460 A GB520460 A GB 520460A
Authority
GB
United Kingdom
Prior art keywords
valve
condenser
resistance
grid
inductance
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
GB3145838A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3145838A priority Critical patent/GB520460A/en
Publication of GB520460A publication Critical patent/GB520460A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
    • H03K4/16—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a single tube with positive feedback through transformer, e.g. blocking oscillator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • X-Ray Techniques (AREA)
  • Amplifiers (AREA)

Abstract

520,460. Valve generating circuits. GENERAL ELECTRIC CO., Ltd., CHERRY, E. C., and CLAYTON, R. J. Oct. 31, 1938, No. 31458. [Class 40 (v)] In a saw-tooth oscillation generator in which a condenser 3 is charged (or discharged) -at a constant rate through a resistance 7, and is discharged (or charged) abruptly through a thermionic valve 1, the grid circuit of the latter includes a resistance 4 and condenser 5 in parallel, the time constant of which in conjunction with the rate of increase of anode voltage determines the frequency of oscillation, and an inductance 6 coupled to an inductance 2 in series with the condenser 3 in such manner that when the valve begins to conduct the grid voltage is made more positive and thus the discharging (or charging) of the condenser 3 through the valve is expedited. The valve 1 may be a multi-grid valve, synchronizing signals being applied to one of the additional grids. Current through the resistance 7 may be supplied through a pentode or like valve operating at constant current. The voltage derived from the condenser 3 may be amplified for application to the deflecting coils of a cathode-ray tube, and the amplifier may be enclosed in the same envelope as the oscillator, the two valves sharing the same cathode. For example, a triode-hexode may be adapted to serve the two functions. Specification 425,035 is referred to.
GB3145838A 1938-10-31 1938-10-31 Improvements in or relating to means for generating electrical saw-tooth oscillations Expired GB520460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3145838A GB520460A (en) 1938-10-31 1938-10-31 Improvements in or relating to means for generating electrical saw-tooth oscillations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3145838A GB520460A (en) 1938-10-31 1938-10-31 Improvements in or relating to means for generating electrical saw-tooth oscillations

Publications (1)

Publication Number Publication Date
GB520460A true GB520460A (en) 1940-04-24

Family

ID=10323369

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3145838A Expired GB520460A (en) 1938-10-31 1938-10-31 Improvements in or relating to means for generating electrical saw-tooth oscillations

Country Status (1)

Country Link
GB (1) GB520460A (en)

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