GB992540A - Relay circuit - Google Patents

Relay circuit

Info

Publication number
GB992540A
GB992540A GB190761A GB190761A GB992540A GB 992540 A GB992540 A GB 992540A GB 190761 A GB190761 A GB 190761A GB 190761 A GB190761 A GB 190761A GB 992540 A GB992540 A GB 992540A
Authority
GB
United Kingdom
Prior art keywords
transistor
relay coil
relay circuit
jan
series
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
GB190761A
Inventor
Geoffrey Charles Richards
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB190761A priority Critical patent/GB992540A/en
Publication of GB992540A publication Critical patent/GB992540A/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
    • H03K17/64—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 having inductive loads

Landscapes

  • Relay Circuits (AREA)

Abstract

992,540. Protecting transistor switching circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 17, 1962 [Jan. 17, 1961], No. 1907/61. Heading H3T. In a relay circuit comprising a relay coil R in series with which is a transistor T forming a switching element, the back E.M.F. across the transistor is limited by means of a Zener diode Z shunting the relay coil R. A blocking rectifier X is connected in series with the Zener diode Z to ensure that the relay coil R is fully energized during the period that transistor T is conducting.
GB190761A 1961-01-17 1961-01-17 Relay circuit Expired GB992540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB190761A GB992540A (en) 1961-01-17 1961-01-17 Relay circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190761A GB992540A (en) 1961-01-17 1961-01-17 Relay circuit

Publications (1)

Publication Number Publication Date
GB992540A true GB992540A (en) 1965-05-19

Family

ID=9730133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190761A Expired GB992540A (en) 1961-01-17 1961-01-17 Relay circuit

Country Status (1)

Country Link
GB (1) GB992540A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579830A1 (en) * 1985-04-01 1986-10-03 Sgs Microelettronica Spa Integrated electronic device for controlling inductive loads

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579830A1 (en) * 1985-04-01 1986-10-03 Sgs Microelettronica Spa Integrated electronic device for controlling inductive loads

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