Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1976-09-30
1978-04-25
Mullins, James B.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250213VT, 313103R, 313105R, 330 42, H01J 3912
Patent
active
040864871
ABSTRACT:
A dynode assembly having a given length and a field electrode assembly having the same given length are disposed in a vacuum envelope. The dynode assembly is in a first plane parallel to and spaced from the longitudinal axis of the envelope and the field electrode assembly is disposed in a second plane parallel to and spaced from the axis in a direction opposite to the spacing of the dynode assembly. The dynode assembly receives on its input end input electrons produced by an input signal which may be either electrical or optical. The field electrode assembly is shifted along the axis with respect to the dynode assembly such that the output end of the field electrode assembly extends beyond the output end of the dynode assembly such that lines of equal potential between the two assemblies form an angle .theta. with the first and second planes. A first operating voltage is coupled to both assemblies adjacent the input end thereof and a second operating voltage is coupled to both assemblies adjacent the output ends thereof. The second operating voltage has a value which is greater and more positive than the value of the first operating voltage. A bias voltage electrode having a bias voltage coupled thereto is disposed in the envelope adjacent the input end of both of the assemblies at an angle .theta. with respect to the first and second planes to ensure that all of the electrons are directed between the two assemblies. A collector electrode having an accelerating voltage coupled thereto is disposed in the envelope adjacent the output end of both assemblies at an angle .theta. with respect to the first and second planes. The collector electrode provides a multiplied output current for the multiplier.
REFERENCES:
patent: 2209847 (1940-07-01), Rabuteau et al.
patent: 2231676 (1941-02-01), Muller
patent: 2700116 (1955-01-01), Sherdon
patent: 2836760 (1958-05-01), Winter
patent: 3235765 (1966-02-01), Goodrich et al.
Hill Alfred C.
International Telephone and Telegraph Corporation
Mullins James B.
O'Halloran John T.
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