GB706313A - Improvements in or relating to sawtooth generators and to polar position-indicators embodying sawtooth generators - Google Patents

Improvements in or relating to sawtooth generators and to polar position-indicators embodying sawtooth generators

Info

Publication number
GB706313A
GB706313A GB8914/49A GB891449A GB706313A GB 706313 A GB706313 A GB 706313A GB 8914/49 A GB8914/49 A GB 8914/49A GB 891449 A GB891449 A GB 891449A GB 706313 A GB706313 A GB 706313A
Authority
GB
United Kingdom
Prior art keywords
grid
output
wave
charging voltage
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
GB8914/49A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB706313A publication Critical patent/GB706313A/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
    • H03K4/20—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 tube with negative feedback by capacitor, e.g. Miller integrator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G01S7/10—Providing two-dimensional and co-ordinated display of distance and direction
    • G01S7/12—Plan-position indicators, i.e. P.P.I.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Power Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Details Of Television Scanning (AREA)

Abstract

706,313. Saw tooth generating circuits; pulse radar. PHILIPS ELECTRICAL, Ltd. April 1, 1949 [April 6, 1948], No. 8914/49. Classes 40 (6) and 40 (7) In a sawtooth generator of the Miller type in which a capacitor 4 connected between the anode and grid of a valve is periodically charged and discharged, a grid leak 5, the charging voltage 6' and a source of negative grid bias 8', 8" are connected in series-between the grid and cathode and the charging voltage is periodically rendered operative by opening a switch bridging the series combination of charging voltage source and grid leak. The bias may be adjusted such that the valve is normally conducting so that the anode voltage step which usually occurs at the start of the long flank of the output wave is avoided and so that both positive and negative going output waves may be produced. The charging voltage may be sinusoidal so that the amplitudes of successive sawtooth waves follow a sine curve, Fig. 6, two of such generators with the sine waves in quadrature being suitable for producing the deflection voltages in a plan position indicator. The switch comprises reversely arranged diodes periodically rendered conducting by pulses applied to their series resistors 16, 17. A resistor 20 causes a sharp change in anode voltage to occur at the commencement of the long flank of the output wave and may be adjusted so that the anode voltage at start of the long flank is equal to the average value of the wave and the output from the coupling capacitor 13 at this point in the wave is zero. The adjustment is independent of output voltage amplitude.
GB8914/49A 1948-04-06 1949-04-01 Improvements in or relating to sawtooth generators and to polar position-indicators embodying sawtooth generators Expired GB706313A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL139789 1948-04-06

Publications (1)

Publication Number Publication Date
GB706313A true GB706313A (en) 1954-03-31

Family

ID=19750443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8914/49A Expired GB706313A (en) 1948-04-06 1949-04-01 Improvements in or relating to sawtooth generators and to polar position-indicators embodying sawtooth generators

Country Status (7)

Country Link
US (1) US2662197A (en)
BE (1) BE488279A (en)
CH (1) CH272093A (en)
DE (1) DE806269C (en)
FR (1) FR984189A (en)
GB (1) GB706313A (en)
NL (1) NL76817C (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB761853A (en) * 1952-10-17 1956-11-21 Emi Ltd Improvements relating to charging and/or discharging circuits for condensers
US2867721A (en) * 1953-03-27 1959-01-06 Delos B Churchill Regenerative phantastron time delay circuit
US2870411A (en) * 1953-04-21 1959-01-20 Honeywell Regulator Co Frequency modulated oscillator
US2919415A (en) * 1954-03-22 1959-12-29 Hoffman Electronics Corp Amplitude modulated blocking oscillators or the like
NL88035C (en) * 1954-03-27
US2831146A (en) * 1955-06-30 1958-04-15 Panoramic Radio Products Inc Panoramic system
US2961608A (en) * 1956-06-20 1960-11-22 Gen Electric High voltage sawtooth wave generator
US3002158A (en) * 1956-12-31 1961-09-26 North American Aviation Inc Time modulation circuit
US2961612A (en) * 1957-06-17 1960-11-22 Gen Electric Saw tooth wave form generator
BE570333A (en) * 1957-08-13
US2953679A (en) * 1958-01-20 1960-09-20 Rca Corp Sweep circuit
US3003111A (en) * 1958-05-29 1961-10-03 Bell Telephone Labor Inc Pulse generator having means for independently controlling, during successive output periods, amplitude or slope and duration
US2984788A (en) * 1959-11-12 1961-05-16 Rca Corp Sweep circuit
US3281585A (en) * 1960-05-16 1966-10-25 Exxon Research Engineering Co Means for generating a plurality of non-linear functions
US3240942A (en) * 1962-03-14 1966-03-15 Gen Precision Inc Apparatus for establishing and maintaining a predetermined angular relation to a source of radiant energy

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164968A (en) * 1935-08-13 1939-07-04 Telefunken Gmbh Saw-toothed wave form generator
US2109752A (en) * 1935-08-29 1938-03-01 Rca Corp Oscillator
GB487321A (en) * 1936-12-12 1938-06-13 Eric Lawrence Casling White Improvements in or relating to thermionic valve circuits
BE481371A (en) * 1942-02-17
US2436890A (en) * 1945-01-24 1948-03-02 Nasa Modulated saw-tooth sweep generator
US2485938A (en) * 1947-07-08 1949-10-25 Us Navy Voltage generator, hyperbolic wave form

Also Published As

Publication number Publication date
CH272093A (en) 1950-11-30
US2662197A (en) 1953-12-08
DE806269C (en) 1951-06-14
FR984189A (en) 1951-07-03
BE488279A (en)
NL76817C (en)

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