GB975816A - Gas discharge tube pulsing circuit - Google Patents

Gas discharge tube pulsing circuit

Info

Publication number
GB975816A
GB975816A GB8515/61A GB851561A GB975816A GB 975816 A GB975816 A GB 975816A GB 8515/61 A GB8515/61 A GB 8515/61A GB 851561 A GB851561 A GB 851561A GB 975816 A GB975816 A GB 975816A
Authority
GB
United Kingdom
Prior art keywords
tube
pulse
primary
transformer
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
GB8515/61A
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB975816A publication Critical patent/GB975816A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
    • H03K3/55—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a gas-filled tube having a control electrode
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor

Landscapes

  • Amplifiers (AREA)

Abstract

975,816. Transistor pulse circuits. HEWLETT-PACKARD CO. March 8, 1961 [March 17, 1960], No. 8515/61. Heading H3T. [Also in Division H2] In a circuit for supplying pulses to a gas-discharge tube, the tappings on the transformer primary are first set to provide a high secondary voltage at the beginning of each pulse and, when the gas tube breaks down, the primary tappings are automatically adjusted to reduce the primary current. Fig. 1 shows a circuit for pulsing a microwave noise generator tube 41. Positive pulses from a source 11 are amplified by a transistor 13 and amplifier 15 before being fed to terminal 21 of transformer 25. The switching device 55 is normally closed so that the effective primary connections are terminals 21, 51. The secondary winding provides a 4,000V pulse which strikes the tube 41, thus giving an increase in primary current. The striking of tube 41 causes a positive pulse to appear at terminal 27 which renders diode 29 conductive, hence the effective primary connections are now terminals 21, 27, so that the primary current is reduced. Negative feedback from point 46 maintains constant current in tube 41 until the end of the pulse from source 11, when the switching device 55 is opened and tube 41 extinguished. Device 55 is reclosed, in readiness for the next pulse, by the decay of flux in an inter-stage transformer of amplifier 15. The negative feedback from point 46 is inoperative when the tube 41 is extinguished.
GB8515/61A 1960-03-17 1961-03-08 Gas discharge tube pulsing circuit Expired GB975816A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15593A US2994012A (en) 1960-03-17 1960-03-17 Gas discharge tube pulsing circuit

Publications (1)

Publication Number Publication Date
GB975816A true GB975816A (en) 1964-11-18

Family

ID=21772341

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8515/61A Expired GB975816A (en) 1960-03-17 1961-03-08 Gas discharge tube pulsing circuit

Country Status (2)

Country Link
US (1) US2994012A (en)
GB (1) GB975816A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834560A (en) * 1981-08-21 1983-03-01 周　成祥 Discharge lamp display unit
US5694006A (en) * 1996-04-04 1997-12-02 Motorola, Inc. Single switch ballast with integrated power factor correction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495301A (en) * 1950-01-24 Voltage regulator
US2901671A (en) * 1956-04-05 1959-08-25 Acr Electronics Corp Controlled flash lamp power supply
US2877385A (en) * 1957-08-21 1959-03-10 Honeywell Regulator Co Electric system
US2935650A (en) * 1958-12-29 1960-05-03 Honeywell Regulator Co Photographic flash apparatus

Also Published As

Publication number Publication date
US2994012A (en) 1961-07-25

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