GB1047524A - Improvements in circuits for energising current or voltage responsive devices - Google Patents

Improvements in circuits for energising current or voltage responsive devices

Info

Publication number
GB1047524A
GB1047524A GB1910662A GB1910662A GB1047524A GB 1047524 A GB1047524 A GB 1047524A GB 1910662 A GB1910662 A GB 1910662A GB 1910662 A GB1910662 A GB 1910662A GB 1047524 A GB1047524 A GB 1047524A
Authority
GB
United Kingdom
Prior art keywords
capacitor
load
transistors
diode
circuit
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
GB1910662A
Inventor
Roy Hutchins
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 GB1910662A priority Critical patent/GB1047524A/en
Publication of GB1047524A publication Critical patent/GB1047524A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H01H47/325—Energising current supplied by semiconductor device by switching regulator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)

Abstract

1,047,524. Transistor switching circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 2, 1963 [May 17, 1962], No. 19106/62. Heading H3T. A fail safe switching circuit comprises a D.C. operated load such as relay RL connected in parallel with diode D between one or other pole of the supply source and (through a capacitor) to the junction of two transistors connected across the source. An input signal applied to the transistors causes the transistors to become conducting alternately, so charging and discharging the capacitor. The charging current is by-passed from the load by the diode but the discharge current flows in pulses through the load to cause it to operate. Failure due to open-circuit or short-circuit of the transistors prevents the load from being energized as also does failure of the capacitor, the diode being so poled as to by-pass short-circuit current from the supply through the capacitor. The Specification also describes known circuits in which transistor 2 is replaced by a resistor (Figs. 1 and 2, not shown).
GB1910662A 1962-05-17 1962-05-17 Improvements in circuits for energising current or voltage responsive devices Expired GB1047524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1910662A GB1047524A (en) 1962-05-17 1962-05-17 Improvements in circuits for energising current or voltage responsive devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1910662A GB1047524A (en) 1962-05-17 1962-05-17 Improvements in circuits for energising current or voltage responsive devices

Publications (1)

Publication Number Publication Date
GB1047524A true GB1047524A (en) 1966-11-09

Family

ID=10123883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1910662A Expired GB1047524A (en) 1962-05-17 1962-05-17 Improvements in circuits for energising current or voltage responsive devices

Country Status (1)

Country Link
GB (1) GB1047524A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083996A2 (en) * 1982-01-13 1983-07-20 Omron Tateisi Electronics Co. Electronic switching device with exciting coil
EP0865059A1 (en) * 1997-03-13 1998-09-16 Electrowatt Technology Innovation AG Circuit arrangement for energy saving operation of a relay
US6061226A (en) * 1997-03-13 2000-05-09 Electrowatt Technology Innovation Ag Relay circuit with cyclical controlled capacitor
EP2180493A1 (en) * 2004-04-01 2010-04-28 Honeywell Technologies Sarl Control circuit for a relay for relay-operated gas valves

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083996A2 (en) * 1982-01-13 1983-07-20 Omron Tateisi Electronics Co. Electronic switching device with exciting coil
EP0083996A3 (en) * 1982-01-13 1985-01-16 Omron Tateisi Electronics Co. Electronic switching device with exciting coil
EP0865059A1 (en) * 1997-03-13 1998-09-16 Electrowatt Technology Innovation AG Circuit arrangement for energy saving operation of a relay
US6061226A (en) * 1997-03-13 2000-05-09 Electrowatt Technology Innovation Ag Relay circuit with cyclical controlled capacitor
EP2180493A1 (en) * 2004-04-01 2010-04-28 Honeywell Technologies Sarl Control circuit for a relay for relay-operated gas valves

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