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GB821517A - Improvements in or relating to electric sawtooth wave generator circuits, time-base circuits and the like - Google Patents

Improvements in or relating to electric sawtooth wave generator circuits, time-base circuits and the like

Info

Publication number
GB821517A
GB821517A GB17917/55A GB1791755A GB821517A GB 821517 A GB821517 A GB 821517A GB 17917/55 A GB17917/55 A GB 17917/55A GB 1791755 A GB1791755 A GB 1791755A GB 821517 A GB821517 A GB 821517A
Authority
GB
United Kingdom
Prior art keywords
capacitor
base
collector
transistor
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
GB17917/55A
Inventor
Derek Robert Skoyles
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co Ltd
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 Mullard Radio Valve Co Ltd filed Critical Mullard Radio Valve Co Ltd
Priority to GB17917/55A priority Critical patent/GB821517A/en
Priority to US592323A priority patent/US2995679A/en
Priority to DEN12375A priority patent/DE1041612B/en
Priority to BE548867A priority patent/BE548867A/en
Priority to FR1192913D priority patent/FR1192913A/en
Publication of GB821517A publication Critical patent/GB821517A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C7/00—Apparatus for pounding, forming, or pressing meat, sausage-meat, or meat products
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/20—Shapes for preparing foodstuffs, e.g. meat-patty moulding devices, pudding moulds
    • 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
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/60—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor
    • H03K4/62—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor using a semiconductor device operating as a switching device
    • H03K4/68—Generators in which the switching device is conducting during the fly-back part of the cycle
    • 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
    • H03K4/86—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements gas-filled tubes or spark-gaps

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Dc-Dc Converters (AREA)
  • Details Of Television Scanning (AREA)

Abstract

821,517. Converting. MULLARD RADIO VALVE CO. Ltd. Aug. 31, 1956 [June 21, 1955], No. 17917/55. Class 38 (2). [Also in Group XL (c)] A D.C. voltage for external use is provided by a circuit in which a sawtooth current is generated in an inductance by charging a capacitance during the forward stroke, discharging it through the inductance and a transistor during the flyback and then permitting the energy in the inductance to discharge at a constant voltage during the next forward stroke. In Fig. 3, a capacitor 61 is charged resonantly from the H.T. supply during the forward stroke through an inductor L2, a diode D2 being provided when necessary to prevent the capacitor discharging through the supply. At the end of the forward stroke a synchronizing pulse applied to the base of a transistor T renders the transistor conducting for a sufficiently long period for the capacitor to discharge resonantly through an inductor L1. The current in the inductor accordingly rises to a peak whereupon the voltage across its terminals reverses and a linear discharge commences through a diode D1 and a substantially constant voltage source V, so producing the forward stroke and charging the capacitor C2 in the source. The voltage across this capacitor may be used in an external circuit. In an alternative circuit operating in a similar manner (Fig. 2, not shown), the positions of the capacitor C1 and transistor are interchanged. The transistor may be operated in an avalanche manner. This may be effected either by causing the input pulses to pass the base voltage through a value at which avalanche multiplication occurs or by applying the pulses through a blocking capacitor to the collector so that the collector potential is suddenly brought to a sufficiently high value to initiate avalanche multiplication. Preferably, the base is simultaneously biased in the forward direction by regenerative reaction between the collector and base. A rectifier connected between the inductance L1 and the junction of the collector and blocking capacitor will prevent the synchronizing pulses discharging through the inductor. A capacitor may be connected between collector and base to improve the avalanche operation. Specification 642,910 is referred to.
GB17917/55A 1955-06-21 1955-06-21 Improvements in or relating to electric sawtooth wave generator circuits, time-base circuits and the like Expired GB821517A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB17917/55A GB821517A (en) 1955-06-21 1955-06-21 Improvements in or relating to electric sawtooth wave generator circuits, time-base circuits and the like
US592323A US2995679A (en) 1955-06-21 1956-06-19 Circuit arrangement for generating a sawtooth current in an inductance
DEN12375A DE1041612B (en) 1955-06-21 1956-06-20 Circuit arrangement for generating a saw tooth current through an inductance
BE548867A BE548867A (en) 1955-06-21 1956-06-21 Assembly to generate a sawtooth current in an induction coil
FR1192913D FR1192913A (en) 1955-06-21 1956-06-26 Sawtooth current generator passing through an induction coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17917/55A GB821517A (en) 1955-06-21 1955-06-21 Improvements in or relating to electric sawtooth wave generator circuits, time-base circuits and the like

Publications (1)

Publication Number Publication Date
GB821517A true GB821517A (en) 1959-10-07

Family

ID=43304910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17917/55A Expired GB821517A (en) 1955-06-21 1955-06-21 Improvements in or relating to electric sawtooth wave generator circuits, time-base circuits and the like

Country Status (5)

Country Link
US (1) US2995679A (en)
BE (1) BE548867A (en)
DE (1) DE1041612B (en)
FR (1) FR1192913A (en)
GB (1) GB821517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107086810A (en) * 2017-06-29 2017-08-22 张玉炜 A high-energy pulse power supply control circuit

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1234785B (en) * 1959-06-04 1967-02-23 Philips Nv Circuit arrangement for generating electrical pulses
US3111603A (en) * 1959-07-02 1963-11-19 Rca Corp Television deflection circuit
US3188517A (en) * 1960-04-19 1965-06-08 Kaiser Aerospace & Electronics Transistorized horizontal sweep output circuit
US3198978A (en) * 1960-09-30 1965-08-03 Philco Corp Low d.c. power horizontal deflection circuit
US3211946A (en) * 1961-04-28 1965-10-12 Warwick Electronics Inc Electromagnetic deflection circuits
GB962264A (en) * 1961-06-02 1964-07-01 Marconi Co Ltd Improvements in or relating to pulse delay circuit arrangements
BE621463A (en) * 1961-08-17
US3185844A (en) * 1961-09-19 1965-05-25 Bess Leon Radiation dosimeter circuit
BE624088A (en) * 1961-10-26
US3197671A (en) * 1962-05-21 1965-07-27 Warwick Eletronics Inc Transistorized deflection system
US3179843A (en) * 1963-01-14 1965-04-20 Fairchild Camera Instr Co Combined television sweep current generator and power supply
DE1263075B (en) * 1965-05-26 1968-03-14 Philips Patentverwaltung Circuit arrangement for generating a saw tooth voltage on a capacitor
US3436591A (en) * 1965-08-06 1969-04-01 Rca Corp Electron beam deflection and low voltage supply circuit
DE1287619B (en) * 1967-06-07 1969-01-23
US3654510A (en) * 1969-11-14 1972-04-04 Gen Electric Direct drive vertical deflection system utilizing a storage capacitor and discharge tube in place of an output transformer
US3700958A (en) * 1971-03-05 1972-10-24 Rca Corp Deflection and pincushion correction circuit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE465084A (en) * 1945-05-11
US2697784A (en) * 1946-03-14 1954-12-21 Richard H Blythe Linear sweep circuit
BE474449A (en) * 1946-03-20
BE491135A (en) * 1948-09-21
US2571824A (en) * 1949-08-25 1951-10-16 Rca Corp Gaseous discharge circuit
US2664521A (en) * 1951-11-07 1953-12-29 Motorola Inc Deflection circuits
US2728857A (en) * 1952-09-09 1955-12-27 Rca Corp Electronic switching
US2760109A (en) * 1952-12-26 1956-08-21 Rca Corp Kinescope deflection circuits
US2774911A (en) * 1954-02-08 1956-12-18 Int Standard Electric Corp Circuit arrangement for the generation of saw-tooth shaped deflecting currents

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107086810A (en) * 2017-06-29 2017-08-22 张玉炜 A high-energy pulse power supply control circuit

Also Published As

Publication number Publication date
US2995679A (en) 1961-08-08
FR1192913A (en) 1959-10-29
BE548867A (en) 1959-11-20
DE1041612B (en) 1958-10-23

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