GB1162745A - Pulse Circuit - Google Patents

Pulse Circuit

Info

Publication number
GB1162745A
GB1162745A GB21388/67A GB2138867A GB1162745A GB 1162745 A GB1162745 A GB 1162745A GB 21388/67 A GB21388/67 A GB 21388/67A GB 2138867 A GB2138867 A GB 2138867A GB 1162745 A GB1162745 A GB 1162745A
Authority
GB
United Kingdom
Prior art keywords
capacitor
thyristor
operate
switches
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
GB21388/67A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1162745A publication Critical patent/GB1162745A/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
    • 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

Abstract

1,162,745. Typewriters etc.; selective printing. INTERNATIONAL BUSINESS MACHINES CORP. 9 May, 1967 [3 June, 1966], No. 21388/67. Heading B6F. [Also in Division H3] A thyristor circuit (see Division H3) is used to operate a print hammer winding 2. When thyristor 1 is fired to operate the hammer, a commutating capacitor 7 switches off a thyristor 4 and through a diode 12 rapidly charges a capacitor 13 with its upper plate negative. The commutating capacitor rapidly charges through a transistor 5 which is now conducting and capacitor 13 begins to charge in a positive direction through resistor 14. This continues until the capacitor voltage fires thyristor 4 and so through the action of the commutating capacitor switches off 1 and de-energizes the print hammer. If the timing components 10-14 are omitted the circuit is bi-stable.
GB21388/67A 1966-06-03 1967-05-09 Pulse Circuit Expired GB1162745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US555196A US3458730A (en) 1966-06-03 1966-06-03 Monostable controlled rectifier switching circuit with variable impedance for low power dissipation and rapid recovery

Publications (1)

Publication Number Publication Date
GB1162745A true GB1162745A (en) 1969-08-27

Family

ID=24216345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21388/67A Expired GB1162745A (en) 1966-06-03 1967-05-09 Pulse Circuit

Country Status (6)

Country Link
US (1) US3458730A (en)
JP (1) JPS4424649B1 (en)
DE (1) DE1283893B (en)
FR (1) FR1529740A (en)
GB (1) GB1162745A (en)
NL (1) NL6707674A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142486A (en) * 1983-05-31 1985-01-16 Olympus Optical Co Electronic flash system and circuits therefor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566157A (en) * 1968-07-16 1971-02-23 Westinghouse Air Brake Co Load driving circuit employing a control gate to prevent overloading
US3867651A (en) * 1973-09-28 1975-02-18 Rca Corp Monostable switching circuit
US3941034A (en) * 1974-07-11 1976-03-02 Carl Helwig Filter attachment for automobile passenger compartment air intake

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231812A (en) * 1961-02-10 1966-01-25 Gen Electric Co Ltd Electric circuits for controlling the supply of electric current to a load
US3238418A (en) * 1962-06-25 1966-03-01 Gen Electric Electrical protective circuit
US3193733A (en) * 1962-09-27 1965-07-06 Veeder Root Inc Counter driving circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142486A (en) * 1983-05-31 1985-01-16 Olympus Optical Co Electronic flash system and circuits therefor

Also Published As

Publication number Publication date
US3458730A (en) 1969-07-29
FR1529740A (en) 1968-06-21
NL6707674A (en) 1967-12-04
JPS4424649B1 (en) 1969-10-18
DE1283893B (en) 1968-11-28

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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