GB1466676A - Solid state relay - Google Patents

Solid state relay

Info

Publication number
GB1466676A
GB1466676A GB4599473A GB4599473A GB1466676A GB 1466676 A GB1466676 A GB 1466676A GB 4599473 A GB4599473 A GB 4599473A GB 4599473 A GB4599473 A GB 4599473A GB 1466676 A GB1466676 A GB 1466676A
Authority
GB
United Kingdom
Prior art keywords
lascr
load
switching
solid state
state relay
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
GB4599473A
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.)
Bleach J A
Original Assignee
Bleach J A
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 Bleach J A filed Critical Bleach J A
Priority to GB4599473A priority Critical patent/GB1466676A/en
Publication of GB1466676A publication Critical patent/GB1466676A/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
    • H03K17/13—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
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • 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
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • H03K17/79—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar semiconductor switches with more than two PN-junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region

Landscapes

  • Electronic Switches (AREA)
  • Power Conversion In General (AREA)

Abstract

1466676 Thyristor circuits GENERAL ELECTRIC CO 2 Feb 1974 45994/73 Heading H3T [Also in Division H2] In a solid state relay for switching A.C. into a load 17 when the instantaneous voltage is substantially zero, at least one photonactivated switching device 51 has a further switching device 53 arranged to inhibit its operation except when the instantaneous value of the A.C. voltage is substantially zero. As described, LASCR's 51, 52 are arranged to switch A.C. into a load 17 on respective half cycles in response to light emitted from LED's 46, 47 in response to a control signal at 12, 13. Transistors 53, 54 are connected across the gate/cathode paths and are biased from the A.C. so as to inhibit switching of LASCR's 51, 52 except during the zero crossings of the A.C. In Fig. 1 (not shown), the two LASCR's are replaced by a single LASCR, connected across the diagonal of a diode bridge 3. In Figs. 3 and 4 (not shown), a triac (or inverse parallel pair of thyristors) switch the A.C. into the load 17 and are triggered by a circuit as shown in Figs. 1 or 2. The circuit shown at 50 may be formed as an integrated device.
GB4599473A 1974-02-02 1974-02-02 Solid state relay Expired GB1466676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4599473A GB1466676A (en) 1974-02-02 1974-02-02 Solid state relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4599473A GB1466676A (en) 1974-02-02 1974-02-02 Solid state relay

Publications (1)

Publication Number Publication Date
GB1466676A true GB1466676A (en) 1977-03-09

Family

ID=10439411

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4599473A Expired GB1466676A (en) 1974-02-02 1974-02-02 Solid state relay

Country Status (1)

Country Link
GB (1) GB1466676A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812067A1 (en) * 1996-06-07 1997-12-10 Thomson-Csf Photoconductive electric switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812067A1 (en) * 1996-06-07 1997-12-10 Thomson-Csf Photoconductive electric switch
FR2749721A1 (en) * 1996-06-07 1997-12-12 Thomson Csf ELECTRICAL PHOTOCONDUCTOR SWITCH
US5912455A (en) * 1996-06-07 1999-06-15 Thomson-Csf Photoconductor-based electrical switch

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee