Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1984-02-13
1986-07-29
Smith, Alfred E.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
250363S, 250369, G01T 1208, G01T 1164, G01T 120
Patent
active
046032568
ABSTRACT:
A radiation measuring device comprises a scintillator for detection of radiation, a photomultiplier tube and an amplifier circuit for supplying signals having amplitudes dependent on the output current of the photodetector. A first series circuit of a sampling and digital-to-analog converter circuit and an adder is provided with a first storage register connected to the adder. A second storage register is connected to the output of the adder, and the output of the second storage register provides the output of the measuring device. A second series circuit is connected to the output of the photodetector or the amplifier circuit, and includes a pulse start detector, a clock pulse generator, a clock pulse counter, and a comparison circuit. The output of the comparison circuit is connected to the second storage register for storing a sum signal which is supplied by the adder, as well as the first storage register, in order to reset the first storage register to zero.
REFERENCES:
patent: 3541311 (1970-11-01), Taylor
patent: 4186307 (1980-01-01), Tanaka et al.
Hannaher Constantine
Miller Paul R.
Smith Alfred E.
U.S. Philips Corporation
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