GB450986A - Improvements in thermionic and like time-base circuits - Google Patents

Improvements in thermionic and like time-base circuits

Info

Publication number
GB450986A
GB450986A GB733935A GB733935A GB450986A GB 450986 A GB450986 A GB 450986A GB 733935 A GB733935 A GB 733935A GB 733935 A GB733935 A GB 733935A GB 450986 A GB450986 A GB 450986A
Authority
GB
United Kingdom
Prior art keywords
valve
condenser
coupled
saw
voltage
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
GB733935A
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 GB733935A priority Critical patent/GB450986A/en
Priority to DER95725D priority patent/DE754223C/en
Publication of GB450986A publication Critical patent/GB450986A/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)
  • Surgical Instruments (AREA)
  • Particle Accelerators (AREA)

Abstract

450,986. Valve generating circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ESPLEY, D. C., c /o General Electric Co., Ltd., Wembley, Middlesex. March 8, 1935, No. 7339. [Class 40 (v)] Relates to means for producing saw-toothed oscillations, of the kind in which a back-coupled discharge valve of the vacuum type is used, in place of the well-known gas-filled type, and in which the required saw-toothed waveform is developed by means of two coupled inductances one in each of the back-coupled circuits. U.S.A. Specification 1,913,449 is referred to in this connection. Fig. 1 shows a known circuit of the kind in which current from the input terminals 9, 10 charges up the condenser 4 through a pentode 8 until the positive bias across a resistance 12 allows the back-coupled valve 1 to start discharging. The resulting drop in voltage across the coil 5 induces through the coil 11 a voltage on the grid 13 which accelerates the discharge. Similarly a negative grid voltage is developed as the condenser 4 charges. According to the invention, the output terminal 7 is transferred from one plate of the condenser 4, as shown, to the grid 13. The second terminal 6 is then more remote, electrically, from the cathode of the valve. This has the effect of further " sharpening " the saw-toothed wave-form. In a modified arrangement, the condenser 4 is charged (and not discharged), by the anode-cathode current through the valve 1. British Specification 438,235 also is referred to.
GB733935A 1935-03-08 1935-03-08 Improvements in thermionic and like time-base circuits Expired GB450986A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB733935A GB450986A (en) 1935-03-08 1935-03-08 Improvements in thermionic and like time-base circuits
DER95725D DE754223C (en) 1935-03-08 1936-03-07 Circuit arrangement for generating sawtooth-shaped breakover voltages with a grid-controlled high vacuum charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB733935A GB450986A (en) 1935-03-08 1935-03-08 Improvements in thermionic and like time-base circuits

Publications (1)

Publication Number Publication Date
GB450986A true GB450986A (en) 1936-07-28

Family

ID=9831215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB733935A Expired GB450986A (en) 1935-03-08 1935-03-08 Improvements in thermionic and like time-base circuits

Country Status (2)

Country Link
DE (1) DE754223C (en)
GB (1) GB450986A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438845A (en) * 1942-06-26 1948-03-30 Vickers Electrical Co Ltd Relaxation circuits for producing electrical impulses at regular recurrence frequencies
US2442286A (en) * 1940-09-20 1948-05-25 Vickers Electrical Co Ltd Synchronized pulse producer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1913449A (en) * 1929-03-05 1933-06-13 Western Electric Co Electric oscillator
DE564234C (en) * 1931-04-28 1932-11-15 Erich Hudec Dr Ing Arrangement for converting an alternating voltage into a synchronously running alternating voltage of lower frequency
USRE21400E (en) * 1932-04-04 1940-03-19 blumlein
US2055611A (en) * 1932-12-29 1936-09-29 Nakashima Tomomasa Saw-tooth wave form current and voltage generating device
NL41904C (en) * 1933-05-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442286A (en) * 1940-09-20 1948-05-25 Vickers Electrical Co Ltd Synchronized pulse producer
US2438845A (en) * 1942-06-26 1948-03-30 Vickers Electrical Co Ltd Relaxation circuits for producing electrical impulses at regular recurrence frequencies

Also Published As

Publication number Publication date
DE754223C (en) 1955-08-04

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