GB551767A - Improvements in and relating to control apparatus for vapour electric discharge devices - Google Patents

Improvements in and relating to control apparatus for vapour electric discharge devices

Info

Publication number
GB551767A
GB551767A GB1613641A GB1613641A GB551767A GB 551767 A GB551767 A GB 551767A GB 1613641 A GB1613641 A GB 1613641A GB 1613641 A GB1613641 A GB 1613641A GB 551767 A GB551767 A GB 551767A
Authority
GB
United Kingdom
Prior art keywords
resistance
anode
electric discharge
condenser
photo
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
GB1613641A
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.)
General Electric Co
Original Assignee
General Electric Co
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
Priority to US354533A priority Critical patent/US2248611A/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to GB1613641A priority patent/GB551767A/en
Publication of GB551767A publication Critical patent/GB551767A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/14—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens

Landscapes

  • Thyristors (AREA)

Abstract

551,767. Thermionic relay circuits. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Dec. 15, 1941, No. 16136. [Class 40 (v)] A relay 5 shunted by a capacitor preferably electrolytic with a resistance 7 to prevent oscillation or polarity reversal in the capacitor, is controlled by a vapour electric discharge device 4 of the shield grid type described in Specification 445,593 and a rectifying photo-electric device 19 arranged as follows. - A transformer winding 3 supplying the anode .circuit of the valve 4 has a section 9, 12 supplying a condenser 10 and resistance 11 to give a grid bias wave through resistances 13, 14 which is 90 degrees in advance of the anode voltage wave, and a section 12, 21 arranged in association with the recifying photocell 19 to charge a condenser 22 in parallel with resistance 13 whereby negative bias impulses are supplied during current conducting half-cycles of the anode circuit. Thus the grid voltage is maintained below the critical voltage until the intensity of light on the photo-cell is sufficiently decreased, whereupon the valve will fire early in each positive half cycle. Specification 436,811 also is referred to.
GB1613641A 1940-08-28 1941-12-15 Improvements in and relating to control apparatus for vapour electric discharge devices Expired GB551767A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US354533A US2248611A (en) 1940-08-28 1940-08-28 Control apparatus for vapor electric discharge devices
GB1613641A GB551767A (en) 1941-12-15 1941-12-15 Improvements in and relating to control apparatus for vapour electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1613641A GB551767A (en) 1941-12-15 1941-12-15 Improvements in and relating to control apparatus for vapour electric discharge devices

Publications (1)

Publication Number Publication Date
GB551767A true GB551767A (en) 1943-03-09

Family

ID=10071826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1613641A Expired GB551767A (en) 1940-08-28 1941-12-15 Improvements in and relating to control apparatus for vapour electric discharge devices

Country Status (1)

Country Link
GB (1) GB551767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966619A (en) * 1957-11-14 1960-12-27 Rheostatic Co Ltd Control of combustion furnaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966619A (en) * 1957-11-14 1960-12-27 Rheostatic Co Ltd Control of combustion furnaces

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