GB342734A - Devices for automatically regulating temperature - Google Patents

Devices for automatically regulating temperature

Info

Publication number
GB342734A
GB342734A GB3385329A GB3385329A GB342734A GB 342734 A GB342734 A GB 342734A GB 3385329 A GB3385329 A GB 3385329A GB 3385329 A GB3385329 A GB 3385329A GB 342734 A GB342734 A GB 342734A
Authority
GB
United Kingdom
Prior art keywords
mirror
light
cell
photo
lamp
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
GB3385329A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3385329A priority Critical patent/GB342734A/en
Publication of GB342734A publication Critical patent/GB342734A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/04—Constructional details for maintaining temperature constant

Landscapes

  • Optical Measuring Cells (AREA)

Abstract

342,734. Thermostats. STANDARD TELEPHONES & CABLES, Ltd., Columbia House, Aldwych, London.-(Tournior, M. C. ; 46, Avenue de Breteuil, Paris.) Nov. 6, 1929, No. 33853. [Class 64 (ii).] A mirror device sensitive to temperature changes controls a beam of light directed upon a lightsensitive cell, and the output of the cell is amplified by a thermionic device and fed back to a heating device. A box A, which may contain a piezoelectric device, is provided with a heating coil H, and a temperature-sensitive resistance B which is placed in the circuit of a Wheatstone bridge W. The mirror m of a galvanometer G reflects a portion of the triangular beam of light provided by a lamp C and diaphragm D on to a photo-electric cell P. A thermionic amplifier V1, V2, V3 is provided, and the coil H is heated by the current from the amplifier. The Wheatstone bridge may be replaced by a bimetallic spiral S, Fig. 2, carrying the mirror m, or by a reservoir R, Fig. 3, containing liquid the expansion of which deforms a flattened tube T and thus rotates the mirror. In another alternative a mercury thermometer may be used having a flattened tube adapted to reflect light on to the photo-electric cell. The beam of light may be modulated by using an alternating current for the lamp C, or by a rotating slotted disc K.
GB3385329A 1929-11-06 1929-11-06 Devices for automatically regulating temperature Expired GB342734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3385329A GB342734A (en) 1929-11-06 1929-11-06 Devices for automatically regulating temperature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3385329A GB342734A (en) 1929-11-06 1929-11-06 Devices for automatically regulating temperature

Publications (1)

Publication Number Publication Date
GB342734A true GB342734A (en) 1931-02-06

Family

ID=10358292

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3385329A Expired GB342734A (en) 1929-11-06 1929-11-06 Devices for automatically regulating temperature

Country Status (1)

Country Link
GB (1) GB342734A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604528A (en) * 1947-10-28 1952-07-22 Illinois Testing Laboratories Photoelectric measurement translating means
US3134053A (en) * 1959-02-28 1964-05-19 Firm Gebruder Netzsch Non-constant controls with photoelectric switches
US3430220A (en) * 1965-09-15 1969-02-25 Clairex Electronics Inc Fire detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604528A (en) * 1947-10-28 1952-07-22 Illinois Testing Laboratories Photoelectric measurement translating means
US3134053A (en) * 1959-02-28 1964-05-19 Firm Gebruder Netzsch Non-constant controls with photoelectric switches
US3430220A (en) * 1965-09-15 1969-02-25 Clairex Electronics Inc Fire detector

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