GB878053A - Temperature controlled oven for a frequency standard generator - Google Patents

Temperature controlled oven for a frequency standard generator

Info

Publication number
GB878053A
GB878053A GB2966259A GB2966259A GB878053A GB 878053 A GB878053 A GB 878053A GB 2966259 A GB2966259 A GB 2966259A GB 2966259 A GB2966259 A GB 2966259A GB 878053 A GB878053 A GB 878053A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
oven
temperature
transistor
oscillator
inner
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
GB2966259A
Inventor
Samuel Andrew Johnston
Carl Arnold Berg
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.)
Amphenol-Borg Electronics Corp
Original Assignee
Amphenol-Borg Electronics Corp
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

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/04Constructional details for maintaining temperature constant
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/20Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24Control 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
    • G05D23/2451Details of the regulator
    • G05D23/2453Details of the regulator using discharge tubes

Abstract

878,053. Automatic temperature control systems. AMPHENOL-BORG ELECTRONICS CORPORATION. Aug. 31, 1959, No. 29662/59. Class 38 (4). [Also in Group XIII] In an automatic temperaturecontrol system for a frequency standard generator, temperaturesensitive components of an oscillator are contained within an inner oven enclosed within an outer oven; each oven has a separate heating element and control circuit, and temperature-sensitive components of the inner oven control circuit are contained within the outer oven. As shown, a crystal 11, associated capacitor 13 and inductance 14 of an oscillator 10 are contained in an inner oven 12 heated by an element 16. A temperature-sensitive resistor 43 is connected as one arm of a bridge having in the remaining arms resistors 44-47. The out-ofbalance voltage of the bridge control the amplitude of oscillation of a transistor oscillator 60, the frequency of which is determined by a resonant circuit 59. A transistor amplifier 66 is coupled to the resonant circuit by a winding 65. A transformer having a primary 67 in the collector circuit of the transistor 66 has a secondary 68 supplying the temperature-sensitive bridge and a secondary 75 connected to a transistor amplifier 76. The voltage across a secondary 78 of a transformer in the output from the transistor oscillator 76 is rectified by a full-wave rectifier 80 and applied as a bias to the base of a transistor 83 controlling the current to the heating element 16. The element 16 is energized so as to tend to maintain the inner oven temperature constant at the turning-point of the crystal 11 by the output voltage of the oscillator 60 falling to zero as the temperature increases. The temperature of the outer oven is controlled by a temperaturesensitive resistor 89, through a modification of the system for the inner oven, varying the supply to a heating element 20. The output of a transistor oscillator 105 is fed to a transistor amplifier 108, the output of which is rectified to apply a bias to the base of a transistor 118 controlling the current to a relay coil 119. When a temperature-sensitive bridge comprising resistors 85-89, approaches balance the current to the relay coil 119 is reduced and a relay contact 122 is opened to disconnect the element 20 from a battery 121. The components comprising the inner oven controller 42 are contained in the space between the inner and outer oven.
GB2966259A 1959-08-31 1959-08-31 Temperature controlled oven for a frequency standard generator Expired GB878053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2966259A GB878053A (en) 1959-08-31 1959-08-31 Temperature controlled oven for a frequency standard generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2966259A GB878053A (en) 1959-08-31 1959-08-31 Temperature controlled oven for a frequency standard generator

Publications (1)

Publication Number Publication Date
GB878053A true true GB878053A (en) 1961-09-20

Family

ID=10295114

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2966259A Expired GB878053A (en) 1959-08-31 1959-08-31 Temperature controlled oven for a frequency standard generator

Country Status (1)

Country Link
GB (1) GB878053A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065406A2 (en) * 1981-05-13 1982-11-24 Marconi Instruments Limited Frequency sources
GB2170930A (en) * 1985-02-07 1986-08-13 Sherritt Gordon Mines Ltd Quadrupole mass spectrometers
EP2634793A3 (en) * 2002-05-31 2014-03-26 Thermo Finnigan LLC Mass spectrometer with improved mass accuracy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065406A2 (en) * 1981-05-13 1982-11-24 Marconi Instruments Limited Frequency sources
EP0065406A3 (en) * 1981-05-13 1984-10-10 Marconi Instruments Limited Frequency sources
GB2170930A (en) * 1985-02-07 1986-08-13 Sherritt Gordon Mines Ltd Quadrupole mass spectrometers
EP2634793A3 (en) * 2002-05-31 2014-03-26 Thermo Finnigan LLC Mass spectrometer with improved mass accuracy

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