GB1173007A – Improvements in and relating to Control Circuits
– Google Patents
GB1173007A – Improvements in and relating to Control Circuits
– Google Patents
Improvements in and relating to Control Circuits
Info
Publication number
GB1173007A
GB1173007A
GB53672/66A
GB5367266A
GB1173007A
GB 1173007 A
GB1173007 A
GB 1173007A
GB 53672/66 A
GB53672/66 A
GB 53672/66A
GB 5367266 A
GB5367266 A
GB 5367266A
GB 1173007 A
GB1173007 A
GB 1173007A
Authority
GB
United Kingdom
Prior art keywords
flame
voltage
established
cell
establishment
Prior art date
1966-01-24
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
GB53672/66A
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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.)
1966-01-24
Filing date
1966-11-30
Publication date
1969-12-03
1966-11-30
Application filed by Honeywell Inc
filed
Critical
Honeywell Inc
1969-12-03
Publication of GB1173007A
publication
Critical
patent/GB1173007A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
F23N—REGULATING OR CONTROLLING COMBUSTION
F23N5/00—Systems for controlling combustion
F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
F23N—REGULATING OR CONTROLLING COMBUSTION
F23N5/00—Systems for controlling combustion
F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
F23N—REGULATING OR CONTROLLING COMBUSTION
F23N5/00—Systems for controlling combustion
F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
F23N—REGULATING OR CONTROLLING COMBUSTION
F23N5/00—Systems for controlling combustion
F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
Abstract
1,173,007. Burner control. HONEYWELL Inc. 30 Nov., 1966 [24 Jan., 1966], No. 53672/66. Heading F4T. [Also in Divisions G1 and H3] In a burner control circuit there is a silicon controlled rectifier 40 which during a trial period for the establishment of a flame is biased to conduct current from an A.C. source 10 in the absence of said flame, and to block the current when the flame is established, wherein bias for the gate of the S.C.R. is derived from the interaction of a voltage drop across the heater 44 of the thermal safety cut-out 22 and a voltage applied to the gate electrode thereof derived from a potential divider circuit 30-33 across the source, the said heater isolating the control circuit at the end of a trial period in the event that the flame is not established. In use, on a call for heat thermostat 20 will close and a voltage be applied across the divider circuit which includes a cadmium cell 33. With the cell not illuminated, since the flame has not been established, the S.C.R. fires energizing relay coil 24 to close burner igniter contact 26 and holding circuit contact 25. Establishment of the flame will illuminate cell 33, lowering its resistance, so that the voltage across resistor 32 drops sufficiently to turn off the S.C.R.
GB53672/66A
1966-01-24
1966-11-30
Improvements in and relating to Control Circuits
Expired
GB1173007A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US522586A
US3416038A
(en)
1966-01-24
1966-01-24
Biased silicon control rectifier control apparatus
Publications (1)
Publication Number
Publication Date
GB1173007A
true
GB1173007A
(en)
1969-12-03
Family
ID=24081465
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB53672/66A
Expired
GB1173007A
(en)
1966-01-24
1966-11-30
Improvements in and relating to Control Circuits
Country Status (3)
Country
Link
US
(1)
US3416038A
(en)
DE
(1)
DE1588268A1
(en)
GB
(1)
GB1173007A
(en)
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3258655A
(en)
*
1966-06-28
Control apparatus
US3089065A
(en)
*
1960-12-07
1963-05-07
Leslie E Worden
Light controlled electrical system and relay therefor
US3294974A
(en)
*
1964-01-22
1966-12-27
Mc Graw Edison Co
Photo-control device employing thermal relay
US3315135A
(en)
*
1965-11-01
1967-04-18
Alfred A Thiele
Silicon controlled rectifier actuated liquid gas filler
1966
1966-01-24
US
US522586A
patent/US3416038A/en
not_active
Expired – Lifetime
1966-11-30
GB
GB53672/66A
patent/GB1173007A/en
not_active
Expired
1967
1967-01-20
DE
DE19671588268
patent/DE1588268A1/en
active
Pending
Also Published As
Publication number
Publication date
US3416038A
(en)
1968-12-10
DE1588268A1
(en)
1970-03-19
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Legal Events
Date
Code
Title
Description
1970-04-15
PS
Patent sealed [section 19, patents act 1949]
1976-06-23
PLNP
Patent lapsed through nonpayment of renewal fees
