GB1366619A - Battery powered blasting machine with a controlled energy range - Google Patents

Battery powered blasting machine with a controlled energy range

Info

Publication number
GB1366619A
GB1366619A GB5278372A GB5278372A GB1366619A GB 1366619 A GB1366619 A GB 1366619A GB 5278372 A GB5278372 A GB 5278372A GB 5278372 A GB5278372 A GB 5278372A GB 1366619 A GB1366619 A GB 1366619A
Authority
GB
United Kingdom
Prior art keywords
capacitor
switch
transistor
winding
blasting
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
GB5278372A
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.)
Bendix Corp
Original Assignee
Bendix Corp
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 Bendix Corp filed Critical Bendix Corp
Publication of GB1366619A publication Critical patent/GB1366619A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
    • H02M3/3381—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement using a single commutation path
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Air Bags (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

1366619 Blasting apparatus comprising D.C. to D.C. conversion BENDIX CORP 15 Nov 1972 [23 Nov 1971] 52783/72 Headings H2H and H2F A blasting machine for detonating blasting caps or squibs connected to terminals 190 comprises a capacitor 153 which is charged from a D.C. supply 140 by way of a solid state oscillator 1 and a transformer 150 a pulse generator 5 having a gaseous breakdown device 170 being provided to generate a plurality of pulses when the capacitor 153 has been charged to a first predetermined level, the pulses being fed to a triggered gaseous breakdown device 180, breakdown of which allows the capacitor 153 to discharge and fire the blasting caps, the machine being provided with a further gaseous breakdown device 160 having a somewhat higher breakdown value than that of the device 170 so that the charge acquired by the capacitor 153 is prevented from exceeding a second predetermined level, higher than the first predetermined level. In the OFF position a switch 9 has a lower contact by means of which the capacitor 153 is discharged when the machine is switched off. A manually operated switch 181 may be provided whereby triggering of the device 180 by the trigger circuit 5 may be controlled manually and the switch 181 may be provided with a lower contact which is in series with the lower contact of the switch 9. When the switch 9 is in the ON position the short circuit is removed from the capacitor 153 and the battery 140 is connected to the oscillator 1. Transistor 121 then conducts with the subsequent conduction of transistor 103 whereupon current flows in the primary winding 101 of transformer 150. With current flowing in winding 101 the transistor 121 gradually returns to the non-conductive state, at which the transistor 103 becomes non-conductive. The energy in the winding 101 then discharges through diodes 104, 106, 110 and resistors 111, 112 thus inducing an output pulse in the secondary winding 151 which charges the capacitor 153 by way of a diode 152.
GB5278372A 1971-11-23 1972-11-15 Battery powered blasting machine with a controlled energy range Expired GB1366619A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20152771A 1971-11-23 1971-11-23

Publications (1)

Publication Number Publication Date
GB1366619A true GB1366619A (en) 1974-09-11

Family

ID=22746197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5278372A Expired GB1366619A (en) 1971-11-23 1972-11-15 Battery powered blasting machine with a controlled energy range

Country Status (6)

Country Link
US (1) US3721886A (en)
CA (1) CA951785A (en)
DE (1) DE2257523A1 (en)
FR (1) FR2163022A5 (en)
GB (1) GB1366619A (en)
IT (1) IT971104B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199998A (en) * 1986-12-30 1988-07-20 Christopher James Wheeler Drive circuitry for a microwave source of a microwave oven

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863132A (en) * 1973-11-19 1975-01-28 Us Navy Efficient dc/dc converter for a solid state fuze
SE416349B (en) * 1976-05-18 1980-12-15 Nitro Nobel Ab METHOD AND DEVICE FOR INITIATING ELECTRIC EXPLOSION CAPS
US5063846A (en) * 1989-12-21 1991-11-12 Hughes Aircraft Company Modular, electronic safe-arm device
US6260483B1 (en) * 1998-04-24 2001-07-17 Richard N. Snyder Remote radio controlled plasma firing system
DE10320425A1 (en) * 2003-05-08 2004-12-16 Forschungszentrum Karlsruhe Gmbh Trigger / ignition device in a Marx generator consisting of n step capacitors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826693A (en) * 1955-02-03 1958-03-11 Arnold E Resnik Pulse generator
US3417306A (en) * 1965-02-09 1968-12-17 Bendix Corp Regulated voltage capacitor discharge circuit
US3541393A (en) * 1969-05-29 1970-11-17 Hercules Inc High energy solid state blasting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199998A (en) * 1986-12-30 1988-07-20 Christopher James Wheeler Drive circuitry for a microwave source of a microwave oven

Also Published As

Publication number Publication date
FR2163022A5 (en) 1973-07-20
CA951785A (en) 1974-07-23
IT971104B (en) 1974-04-30
DE2257523A1 (en) 1973-05-30
US3721886A (en) 1973-03-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee