GB1042550A - An a.c. electrical switching circuit - Google Patents

An a.c. electrical switching circuit

Info

Publication number
GB1042550A
GB1042550A GB3591565A GB3591565A GB1042550A GB 1042550 A GB1042550 A GB 1042550A GB 3591565 A GB3591565 A GB 3591565A GB 3591565 A GB3591565 A GB 3591565A GB 1042550 A GB1042550 A GB 1042550A
Authority
GB
United Kingdom
Prior art keywords
temperature
thyristors
bridge
short
switching 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
GB3591565A
Inventor
Paul Frank Mayes
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB3591565A priority Critical patent/GB1042550A/en
Publication of GB1042550A publication Critical patent/GB1042550A/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
    • H03K17/72—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 having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/725—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 having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents

Landscapes

  • Control Of Temperature (AREA)

Abstract

1,042,550. Automatic temperature control. STANDARD TELEPHONES & CABLES Ltd. Aug. 20, 1965, No. 35915/65. Heading G3R. [Also in Division H3] An automatic system for controlling the temperature of a medium comprises a bridge of two thyristors and two diodes in series with the heating element and the A.C. supply, the other bridge diagonal being short-circuited. The thyristor gates are normally energized from the A.C. supply via diodes MR3, MR4 and resistors R1, R2, but when the temperature of the medium reaches its upper limit the contacts CT of a mercury thermometer close and short-circuit the thyristor gates to the bridge diagonal, thus turning off the thyristors at the next zero point in the A.C. cycle.
GB3591565A 1965-08-20 1965-08-20 An a.c. electrical switching circuit Expired GB1042550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3591565A GB1042550A (en) 1965-08-20 1965-08-20 An a.c. electrical switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3591565A GB1042550A (en) 1965-08-20 1965-08-20 An a.c. electrical switching circuit

Publications (1)

Publication Number Publication Date
GB1042550A true GB1042550A (en) 1966-09-14

Family

ID=10382967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3591565A Expired GB1042550A (en) 1965-08-20 1965-08-20 An a.c. electrical switching circuit

Country Status (1)

Country Link
GB (1) GB1042550A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462034A1 (en) * 1990-06-13 1991-12-18 FERRAZ Société Anonyme Protecting device for semiconductor static relay

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462034A1 (en) * 1990-06-13 1991-12-18 FERRAZ Société Anonyme Protecting device for semiconductor static relay
FR2663478A1 (en) * 1990-06-13 1991-12-20 Ferraz PROTECTIVE DEVICE FOR SEMICONDUCTOR STATIC RELAY.

Similar Documents

Publication Publication Date Title
ES422887A1 (en) Temperature-sensitive control circuit
GB1030632A (en) Apparatus for and method of zero switching
GB1248776A (en) A circuit arrangement for protecting the winding of an a.c. motor against overheating
GB1302357A (en)
GB1420150A (en) Electrically heated panel
ES451399A1 (en) Regulating device for a water-heating and circulating system
GB1042550A (en) An a.c. electrical switching circuit
ES335013A1 (en) A control device for the use of a temperature excess control system on an electrically heated blanket. (Machine-translation by Google Translate, not legally binding)
GB1067859A (en) A control device
GB1133593A (en) Temperature controller
US3166680A (en) Time delay switch
GB1425072A (en) Temperature control switch
GB1225302A (en) Temperature-Dependent control of the supply of current to an electrical appliance
ES372020A1 (en) Sequential loading temperature control system
ES377685A1 (en) Heating control circuit with scr-unijunction transistor combination
GB1329509A (en) Electric power control circuit
GB1187270A (en) Improvements relating to Temperature Control in Electrical Power-Supply Units
GB1312122A (en) Protection circuit
GB1242899A (en) Electric heater control circuit
ES418047A1 (en) Circuit of switching. (Machine-translation by Google Translate, not legally binding)
GB1376294A (en) Electric switching circuits
GB1324100A (en) Three phase current control system
GB1351740A (en) Electric heat storage devices
ES387666A1 (en) Improvements in power regulation systems for heating radiators. (Machine-translation by Google Translate, not legally binding)
GB1081486A (en) Improvements in or relating to electronic circuits