Light pulse detecting device with improved response characterist

Details Light pulse detecting device with improved response characterist Light pulse detecting device with improved response characterist

1986-02-26

1988-04-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

330308, 307311, H01J 4014

Patent

active

047406879

ABSTRACT:
A light pulse detecting device having a photo-transistor whose output is compared with a level to detect incidence of a light pulse thereon. In this device, the photo-transistor is provided with other transistors cascode-connected thereto. For this reason, the capacitance of the emitter-collector path of the photo-transistor becomes equivalently smaller, improving the response characteristic of the light pulse detecting device.

REFERENCES:
patent: 3786264 (1974-01-01), Ferro et al.
patent: 3867628 (1975-02-01), Brown
patent: 3946241 (1976-03-01), Malinowski
patent: 4485301 (1984-11-01), Gontowski, Jr. et al.

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