GB1233751A - - Google Patents

Info

Publication number
GB1233751A
GB1233751A GB1233751DA GB1233751A GB 1233751 A GB1233751 A GB 1233751A GB 1233751D A GB1233751D A GB 1233751DA GB 1233751 A GB1233751 A GB 1233751A
Authority
GB
United Kingdom
Prior art keywords
gating device
main
triac
arrangement
voltage
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 GB1233751A publication Critical patent/GB1233751A/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
    • H03K17/60—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 the devices being bipolar transistors
    • H03K17/68—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 the devices being bipolar transistors specially adapted for switching ac currents or voltages
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/083—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the ignition at the zero crossing of the voltage or the current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/13—Modifications for switching at zero crossing
    • H03K17/136—Modifications for switching at zero crossing in thyristor switches
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant
    • H03K5/1536—Zero-crossing detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electronic Switches (AREA)
  • Control Of Ac Motors In General (AREA)
  • Rectifiers (AREA)

Abstract

1,233,751. Control system for reactive loads. HOLZER PATENT A.G. 20 Aug., 1968 [21 Aug., 1967], No. 39737/68. Heading H2H. [Also in Division G3] An A.C. switching device for the control of the supply of A.C. to a reactive load 12, comprises a main A.C. gating device 11, pulseshaping means 17, 18 to derive a synchronous pulse train from the voltage across the main gating device, and an auxiliary gating device 19 arranged to pass a gating signal to the trigger electrode of the main gating device on a chosen coincidence between an input signal, at 22, to the device 19 and the pulse train, whereby the triggering of the main gating device is synchronized with the passage of the voltage across it through zero. As shown, the pulse shaping means is a transformer 17 having its primary winding connected to the main gating device 11 which is a triac or may include thyristors or gas discharge tubes. The centre tapped secondary winding is connected through rectifiers 18 across a resistor 20 connected in series with the emitter of a transistor 19 serving as the auxiliary gating device. This transistor ceases to conduct when the input signal reaches a chosen low value and the voltage across the triac passes through zero, the triac then being triggered to switch on. In another arrangement, Fig. 3 (not shown), the pulse shaper is formed by a Zener diode, a differentiator and a transistor circuit energized from a potential divider connected across the triac 11. This arrangement may be supplemented by a multi-vibrator, amplifying stages and a Schmitt trigger circuit. A taohogenerator arrangement may be connected to the trigger circuit to provide the input signal, the arrangement then being used for the speed regulation of an electric motor.
GB1233751D 1967-08-21 1968-08-20 Expired GB1233751A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEH0063656 1967-08-21
DE19671588296 DE1588296C3 (en) 1967-08-21 1967-08-21 Device for synchronizing the switch-on moment of a controllable, electronic switch with the zero crossings of the AC mains voltage

Publications (1)

Publication Number Publication Date
GB1233751A true GB1233751A (en) 1971-05-26

Family

ID=25753304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233751D Expired GB1233751A (en) 1967-08-21 1968-08-20

Country Status (3)

Country Link
DE (1) DE1588296C3 (en)
FR (1) FR1600871A (en)
GB (1) GB1233751A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326603A1 (en) * 1982-10-14 1984-04-19 Veb Kombinat Textima, Ddr 9010 Karl-Marx-Stadt Controllable load-dependent regulator for phase-gating controlled motors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121113A (en) * 1977-04-11 1978-10-17 Tektronix, Inc. Electric switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326603A1 (en) * 1982-10-14 1984-04-19 Veb Kombinat Textima, Ddr 9010 Karl-Marx-Stadt Controllable load-dependent regulator for phase-gating controlled motors

Also Published As

Publication number Publication date
FR1600871A (en) 1970-08-03
DE1588296A1 (en) 1970-07-23
DE1588296B2 (en) 1974-09-05
DE1588296C3 (en) 1975-04-30

Similar Documents

Publication Publication Date Title
GB1030632A (en) Apparatus for and method of zero switching
GB1270840A (en) Voltage regulators for direct current supplies
GB1120002A (en) Circuit-controlling systems
GB1263248A (en) Ignition systems
GB1142783A (en) Improvements relating to protective arrangements including electric level-responsive circuits
GB1233751A (en)
US3252058A (en) System for detecting a monitoring input
US3383623A (en) Pulse generators for phase controlled systems
GB1358854A (en) Control circuit for ac supply circuit
GB1239144A (en) Electrical control circuits
GB972673A (en) Supply system for feeding a direct-current magnet system
GB1081575A (en) Improvements in pulse generators
US3343038A (en) Phase loss detector and circuit controlled thereby
US3961235A (en) Static switch controller synchronized with a passage to zero of the supply voltage
GB1146220A (en) An emergency power supply
GB1225416A (en)
GB1004599A (en) Cantactless alternating current switch using controlled valves
GB1059331A (en) Improvements in charging circuits
SE332854B (en)
GB1233227A (en)
GB1008686A (en) Improvements in and relating to electrical control systems
GB1142513A (en) Firing circuits for controllable rectifier devices
GB1199660A (en) Improved Contactor Operating Circuit
GB1288332A (en)
GB1187689A (en) Improvements in or relating to Electrical Switching Devices

Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees