GB1090859A – Improvements in or relating to timers or time alarm devices for cooking apparatus
– Google Patents
GB1090859A – Improvements in or relating to timers or time alarm devices for cooking apparatus
– Google Patents
Improvements in or relating to timers or time alarm devices for cooking apparatus
Info
Publication number
GB1090859A
GB1090859A
GB44548/64A
GB4454864A
GB1090859A
GB 1090859 A
GB1090859 A
GB 1090859A
GB 44548/64 A
GB44548/64 A
GB 44548/64A
GB 4454864 A
GB4454864 A
GB 4454864A
GB 1090859 A
GB1090859 A
GB 1090859A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
resistor
condenser
conducting
Prior art date
1963-11-05
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
GB44548/64A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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.)
1963-11-05
Filing date
1964-11-02
Publication date
1967-11-15
1964-11-02
Application filed by Philips Gloeilampenfabrieken NV
filed
Critical
Philips Gloeilampenfabrieken NV
1967-11-15
Publication of GB1090859A
publication
Critical
patent/GB1090859A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
A—HUMAN NECESSITIES
A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
A47J27/00—Cooking-vessels
A47J27/56—Preventing boiling over, e.g. of milk
A47J27/62—Preventing boiling over, e.g. of milk by devices for automatically controlling the heat supply by switching off heaters or for automatically lifting the cooking-vessels
G—PHYSICS
G04—HOROLOGY
G04F—TIME-INTERVAL MEASURING
G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
G04F1/005—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers using electronic timing, e.g. counting means
G—PHYSICS
G05—CONTROLLING; REGULATING
G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05D23/00—Control of temperature
G05D23/19—Control of temperature characterised by the use of electric means
G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values
G—PHYSICS
G05—CONTROLLING; REGULATING
G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05D23/00—Control of temperature
G05D23/19—Control of temperature characterised by the use of electric means
G05D23/1951—Control of temperature characterised by the use of electric means with control of the working time of a temperature controlling device
G—PHYSICS
G05—CONTROLLING; REGULATING
G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05D23/00—Control of temperature
G05D23/19—Control of temperature characterised by the use of electric means
G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/28—Modifications for introducing a time delay before switching
Abstract
1,090,859. Transistor delayed switching circuit. PHILIPS’ GLOEILAMPENFABRIEKEN N.V. Nov. 2, 1964 [Nov. 5, 1963], No. 44548/64. Heading H3T. [Also in Divisions G3 and G4] A cooking time alarm circuit for egg-boiling includes a temperature-sensitive resistor 5 for immersion in the water and an alarm buzzer 29 in circuit with a switch 20 controlled by a relay 17. When resistor 5 is cold, transistor 1 is conducting. A diode 20 and transistor 3 are also conducting and a Miller condenser 12 is charged. The current through transistor 2 is negligible. Transistor 4 is conducting so that the relay 17 holds switch 60 off. When the water has reached, say, 70‹ C., transistor 3 is cut off. Transistor 2 begins to conduct and condenser 12 is discharged at a very low rate. As boiling point approaches the voltage drop across resistor 10 decreases and condenser 12 discharges more rapidly. This time is adjustable by resistor 11. Eventually, transistor 4 is cut off, switch 60 returns to rest position and the alarm buzzer 29 is operated. In a modification, Fig. 2 (not shown), the circuit includes an emitter follower in the Miller feedback circuit and a voltage stabilizing network supplying D.C. from an A.C. mains.
GB44548/64A
1963-11-05
1964-11-02
Improvements in or relating to timers or time alarm devices for cooking apparatus
Expired
GB1090859A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
NL300119
1963-11-05
Publications (1)
Publication Number
Publication Date
GB1090859A
true
GB1090859A
(en)
1967-11-15
Family
ID=19755190
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB44548/64A
Expired
GB1090859A
(en)
1963-11-05
1964-11-02
Improvements in or relating to timers or time alarm devices for cooking apparatus
Country Status (2)
Country
Link
CH
(1)
CH448304A
(en)
GB
(1)
GB1090859A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP3611430A1
(en)
*
2018-08-15
2020-02-19
Electrolux Appliances Aktiebolag
Control circuit for a water feeding system of a steam cooking apparatus
1964
1964-11-02
CH
CH1412764A
patent/CH448304A/en
unknown
1964-11-02
GB
GB44548/64A
patent/GB1090859A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP3611430A1
(en)
*
2018-08-15
2020-02-19
Electrolux Appliances Aktiebolag
Control circuit for a water feeding system of a steam cooking apparatus
Also Published As
Publication number
Publication date
CH448304A
(en)
1967-12-15
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