GB1191351A - Improvements in or relating to Apparatus for Providing D.C. Pulses of Predetermined Duration - Google Patents

Improvements in or relating to Apparatus for Providing D.C. Pulses of Predetermined Duration

Info

Publication number
GB1191351A
GB1191351A GB5524967A GB5524967A GB1191351A GB 1191351 A GB1191351 A GB 1191351A GB 5524967 A GB5524967 A GB 5524967A GB 5524967 A GB5524967 A GB 5524967A GB 1191351 A GB1191351 A GB 1191351A
Authority
GB
United Kingdom
Prior art keywords
capacitor
load
thyristor
unijunction transistor
pulse
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
GB5524967A
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
Brown Boveri und Cie AG Switzerland
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 BBC Brown Boveri AG Switzerland, Brown Boveri und Cie AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1191351A publication Critical patent/GB1191351A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/73—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for dc voltages or currents
    • 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
    • H03K3/57—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 semiconductor device

Landscapes

  • Generation Of Surge Voltage And Current (AREA)

Abstract

1,191,351. Pulse generators. BROWN, BOVERI & CO. Ltd. 5 Dec., 1967 [7 Dec., 1966], No. 55249/67. Heading H3T. A pulse generator comprises a thyratron or thyristor 3 connected as shown to terminals of a load 4 and direct current supply 1, 2. As described, capacitor 5 is initially charged with the polarity shown via the load 4 and the path E-B 1 of unijunction transistor 7. When the unijunction transistor 7 becomes non-conductive, capacitor 5 discharges slowly via 4 and 6 until unijunction transistor 7 is again triggered, recharging the capacitor with the polarity shown. The duration of the charging pulses is sufficiently short as to have no effect on load 4. When the thyratron or thyristor 3 is fired by a short pulse applied to its control electrode, the load is connected across the direct current supply, initiating an output pulse. Capacitor 5 is immediately discharged via devices 3 and 9 and subsequently recharged through resistor 6 until unijunction transistor 7 once more becomes triggered when capacitor 5 discharges via the thyristor 3 and path E-B 1 , quenching the thyristor 3 and terminating the output pulse in load 4. The duration of output pulse may be adjusted by variation of resistor 6.
GB5524967A 1966-12-07 1967-12-05 Improvements in or relating to Apparatus for Providing D.C. Pulses of Predetermined Duration Expired GB1191351A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR86425A FR1510958A (en) 1966-12-07 1966-12-07 Pulse extinguishing device

Publications (1)

Publication Number Publication Date
GB1191351A true GB1191351A (en) 1970-05-13

Family

ID=8622075

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5524967A Expired GB1191351A (en) 1966-12-07 1967-12-05 Improvements in or relating to Apparatus for Providing D.C. Pulses of Predetermined Duration

Country Status (6)

Country Link
BE (1) BE707598A (en)
CH (1) CH462885A (en)
DE (1) DE1271170B (en)
ES (1) ES348053A1 (en)
FR (1) FR1510958A (en)
GB (1) GB1191351A (en)

Also Published As

Publication number Publication date
BE707598A (en) 1968-04-16
DE1271170B (en) 1968-06-27
FR1510958A (en) 1968-01-26
CH462885A (en) 1968-09-30
ES348053A1 (en) 1969-03-01

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed