GB1089893A - Electrically-controlled switching circuit - Google Patents

Electrically-controlled switching circuit

Info

Publication number
GB1089893A
GB1089893A GB251965A GB251965A GB1089893A GB 1089893 A GB1089893 A GB 1089893A GB 251965 A GB251965 A GB 251965A GB 251965 A GB251965 A GB 251965A GB 1089893 A GB1089893 A GB 1089893A
Authority
GB
United Kingdom
Prior art keywords
switches
switch
solid state
variable
control 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
GB251965A
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of GB1089893A publication Critical patent/GB1089893A/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
    • H03K17/70—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 having only two electrodes and exhibiting negative resistance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Keying Circuit Devices (AREA)
  • Adjustable Resistors (AREA)
  • Electronic Switches (AREA)

Abstract

1,089,893. Control systems for consumption apparatus. DANFOSS A.S. Jan. 20, 1965 [Jan. 21, 1964], No. 2519/65. Heading H2H. [Also in Division H3] A switching circuit for controlling current through a load, comprises at least two junctionless non-rectifying semi-conductor switches 3, 4 in series and a means 5 for applying a control voltage above the threshold valve across a part only of the series connection so as to effect switching of the corresponding switch 3 or switches from a high to a low resistance condition. The control voltage applied from 5 causes switch 3 to switch on so that the supply voltage 1 which is not large enough by itself to switch on all of switches; is now applied across the remainder of the solid state switches e.g. 4 to switch them on. The switches then remain on until the current in the circuit is reduced below their holding value. The control voltage may be from a trigger generator in the form of impulses, square and sine waves and direct voltages. In another embodiment (Fig. 3, not shown), the two solid state switches are connected via a load (8) to a D.C. source (7) and a variable potential divider (11, 12) enables the. D.C. source voltage (U G ) to be applied across either of the switches. (9 or 10) so as to switch one on before the other. The variable arm (11) of the potential divider may be positive or negative temperature coefficient resistor, a photo resistor, a pressure-sensitive resistor, variable resistor or a switch. In a further embodiment (Fig. 4, not shown), both arms of the potential divider may be variable and the solid state switches are mounted on a metal plate which electrically joins them together to form a single unit. The solid state switches consist of predominantly tellurium with additions of elements from Groups IV and V of the Periodic Table. The loads 2 may be capacitive or inductive and the control voltage 5 may be provided from a phase shifter which only allows the switches to conduct during certain parts of the A.C. cycle of the supply 1 so controlling the current through the load.
GB251965A 1964-01-21 1965-01-20 Electrically-controlled switching circuit Expired GB1089893A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED43398A DE1224358B (en) 1964-01-21 1964-01-21 Electronic switch

Publications (1)

Publication Number Publication Date
GB1089893A true GB1089893A (en) 1967-11-08

Family

ID=7047549

Family Applications (1)

Application Number Title Priority Date Filing Date
GB251965A Expired GB1089893A (en) 1964-01-21 1965-01-20 Electrically-controlled switching circuit

Country Status (6)

Country Link
BE (1) BE658625A (en)
DE (1) DE1224358B (en)
FR (1) FR1421163A (en)
GB (1) GB1089893A (en)
NL (1) NL6500383A (en)
SE (1) SE328910B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154511B (en) * 1962-05-21 1963-09-19 Siemens Ag Bistable electronic switch

Also Published As

Publication number Publication date
FR1421163A (en) 1966-06-10
SE328910B (en) 1970-09-28
DE1224358B (en) 1966-09-08
NL6500383A (en) 1965-07-22
BE658625A (en) 1965-05-17

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