GB1275247A - Transistor circuit with an inductive load - Google Patents

Transistor circuit with an inductive load

Info

Publication number
GB1275247A
GB1275247A GB36276/70A GB3627670A GB1275247A GB 1275247 A GB1275247 A GB 1275247A GB 36276/70 A GB36276/70 A GB 36276/70A GB 3627670 A GB3627670 A GB 3627670A GB 1275247 A GB1275247 A GB 1275247A
Authority
GB
United Kingdom
Prior art keywords
transistor
relay
circuit
base
inductive load
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
GB36276/70A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1275247A publication Critical patent/GB1275247A/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

  • Electronic Switches (AREA)

Abstract

1275247 Transistor circuits with inductive loads LICENTIA PATENT VERWALTUNGS GmbH 27 July 1970 [29 July 1969] 36276/70 Heading H3T In a circuit in which an inductive load R (e.g. a relay with a switch S controlling a lamp L1) is energized through a transistor T1, the diode normally provided across the load to shunt the back e.m.f. is constituted by the collector/base path of a second transistor T2, the base of T2 being connected to the collector of T1. The object is to ensure that only a fraction of the current for a network R2 passes through the relay, so that this current does not hold on the relay when T1 is turned off. The network R2 may comprise components connected to the base of a third transistor in a monostable or astable trigger circuit. The circuit may be in integrated form.
GB36276/70A 1969-07-29 1970-07-27 Transistor circuit with an inductive load Expired GB1275247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1938467 1969-07-29

Publications (1)

Publication Number Publication Date
GB1275247A true GB1275247A (en) 1972-05-24

Family

ID=5741232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36276/70A Expired GB1275247A (en) 1969-07-29 1970-07-27 Transistor circuit with an inductive load

Country Status (3)

Country Link
DE (1) DE1938467B1 (en)
FR (1) FR2055670A5 (en)
GB (1) GB1275247A (en)

Also Published As

Publication number Publication date
DE1938467B1 (en) 1971-01-21
FR2055670A5 (en) 1971-05-07

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees