GB1304742A - - Google Patents

Info

Publication number
GB1304742A
GB1304742A GB1304742DA GB1304742A GB 1304742 A GB1304742 A GB 1304742A GB 1304742D A GB1304742D A GB 1304742DA GB 1304742 A GB1304742 A GB 1304742A
Authority
GB
United Kingdom
Prior art keywords
switch
capacitors
pulse
pulses
arrangement
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
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 filed Critical
Publication of GB1304742A publication Critical patent/GB1304742A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K3/00Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/53Generators 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
    • H03K3/57Generators 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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K3/00Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/35Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H03K3/351Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being unijunction transistors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05CELECTRIC CIRCUITS OR APPARATUS SPECIALLY DESIGNED FOR USE IN EQUIPMENT FOR KILLING, STUNNING, OR GUIDING LIVING BEINGS
    • H05C1/00Circuits or apparatus for generating electric shock effects
    • H05C1/04Circuits or apparatus for generating electric shock effects providing pulse voltages

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

1304742 D.C.-D.C. converters ENCON ELECTRONICS Ltd and M C JACKSON 25 May 1971 [26 May 1970] 25172/70 Heading H2F [Also in Division H3] A pulse generating circuit comprises a first switch 31, e.g. a PUT, having two inputs 54, 56 coupled in a balanced arrangement to a D.C. source i.e. via impedances 32-35 and 29, 30, so that conduction of the switch 31 is achieved periodically in which state a signal is applied to the control electrode of a second switch 46, e.g. an SCR, for the production of output pulses and an arrangement e.g. a ganged control switch 36, 37 for adjusting the pulse rate independently of the pulse amplitude and an arrangement e.g. variable resistor 21, for adjusting the pulse amplitude independently of the pulse rate. The time constant of a charging network 32-35 determines the conduction of PUT 31 and hence the rate of the timing pulses produced, which pulses trigger a controlled rectifier 46 so that a charge stored in capacitors 39-41 is discharged via a primary winding 49, with the consequent production of high tension pulses across the secondary 50. The charging circuit for the capacitors 39-41 includes a converter formed of a ringing choke oscillator circuit comprising a transistor 26 which is turned full on when a switch 15 is closed so that the current through a primary winding 24 increases linearly until a maximum limit determined by a resistor 21 is reached when transistor 26 is turned off and a reverse voltage is developed across the secondaries 20, 28 as the magnetic field in the transformer collapses. This reverse voltage is applied via a diode 38 to charge capacitors 39-41 with the above operations being repeated periodically. A pulse lengthening circuit 42, 43, 45 enables an indicating neon tube 48 to be operating even after the discharge of capacitors 39-41 is completed.
GB1304742D 1970-05-26 1970-05-26 Expired GB1304742A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2517270 1970-05-26

Publications (1)

Publication Number Publication Date
GB1304742A true GB1304742A (en) 1973-01-31

Family

ID=10223399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1304742D Expired GB1304742A (en) 1970-05-26 1970-05-26

Country Status (1)

Country Link
GB (1) GB1304742A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2408941A2 (en) * 1976-11-02 1979-06-08 Bicosa Recherches High energy pulse generator - uses thyristor switch and capacitance discharge circuit to drive voltage step=up transformer
FR2416590A1 (en) * 1978-01-31 1979-08-31 Bicosa Recherches LOW CONSUMPTION ELECTRICAL DISCHARGE PULSE GENERATOR
GB2153164A (en) * 1984-01-18 1985-08-14 Moore John Richard Control circuit for electric fencing
FR2635991A1 (en) * 1988-09-07 1990-03-09 Adamczuk Jacques Method for intermittently controlling an electric-control apparatus, means for implementing this method and apparatuses equipped with these means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2408941A2 (en) * 1976-11-02 1979-06-08 Bicosa Recherches High energy pulse generator - uses thyristor switch and capacitance discharge circuit to drive voltage step=up transformer
FR2416590A1 (en) * 1978-01-31 1979-08-31 Bicosa Recherches LOW CONSUMPTION ELECTRICAL DISCHARGE PULSE GENERATOR
GB2153164A (en) * 1984-01-18 1985-08-14 Moore John Richard Control circuit for electric fencing
FR2635991A1 (en) * 1988-09-07 1990-03-09 Adamczuk Jacques Method for intermittently controlling an electric-control apparatus, means for implementing this method and apparatuses equipped with these means

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee