Circuit arrangement for a position-sensitive radiation detector

Details Circuit arrangement for a position-sensitive radiation detector Circuit arrangement for a position-sensitive radiation detector

1987-08-17

1988-09-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250210, H01J 4014

Patent

active

047695331

ABSTRACT:
The invention relates to a circuit arrangement for a position sensitive radiation detector which produces a current or voltage signal (U.sub.Y) that depends exclusively on the coordinates x and y of the point of incidence of electromagnetic radiation on the EMR sensitive surface of a lateral diode (1). For this purpose, the circuit arrangement has integrators (4, 5), in which the voltages (U.sub.1, U.sub.2) are formed, which are proportional to the integral over time of the output currents (I.sub.1, I.sub.2) of the lateral diode (1). The difference between the voltages (U.sub.1, U.sub.2) is used as a signal, which depends exclusively on the coordinates at that particular time, at which the arithmetic mean of these voltages (U.sub.1, U.sub.2) has reached a preselected, constant value.

REFERENCES:
patent: 3028500 (1962-04-01), Wallmark
patent: 3904871 (1975-09-01), Dueker et al.

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