Browsing by Author "Brown, D. C."

Browsing by Author "Brown, D. C."

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  • The construction of a new type of spectrograph and its use photographically and photoelectrically as an automatic recording spectrophotometer 
    Brown, D. C. (College of Aeronautics, Cranfield, 1956-11)
    A new type of concave mirror plane grating spectrograph has been constructed. The mounting is that of a modified Ebert Type and has all the advantages of that mounting whilst being more efficient in its use of the mirror. ...
  • The PN junction as a variable reactance device for F. M. production 
    Brown, D. C. (College of Aeronautics, 1957-11)
    A completely transistorized modulator has been developed for the production of frequency modulation of a 10Mc Is carrier. A frequency deviation of 100kc s is obtained by a change in the modulating signal of 0.15V and ...
  • A transistorized radiation monitor 
    Brown, D. C.; Faraday, B. P. (College of Aeronautics, 1956-12)
    This paper describes the investigation of a number of possible semiconductor devices which can be used for the detection of radioactive particles. The sensitivities of two types of transistor (a p-n-p alloy junction and ...
  • A variable delay line 
    Brown, D. C. (College of Aeronautics, 1958-01)
    A variable delay line has been designed and built which can be used as an accurate means of measuring time intervals between 10 and 200 p seconds. The use of such a device for the determination of the temperature ...