Detector preamplifier for use with a MCT detector

Details Detector preamplifier for use with a MCT detector Detector preamplifier for use with a MCT detector

1985-02-21

1987-07-21

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

307297, 307310, 307311, 250238, H03K 301, H03K 326, H03K 342

Patent

active

046820221

ABSTRACT:
A preamplifier network or circuit for converting non-linear signal information, such as is produced by a mercury cadmium tellurium (MCT) detector, to a substantially linear voltage signal output corresponding to the incident light levels on the MCT detector. Conceptually speaking, the subject preamplifier functions as a constant-voltage variable-current source to the MCT detector, and incorporates positive feedback for being effective as a negative resistance to nullify the MCT detector resisance introduced signal component of the signal information being monitored.

REFERENCES:
patent: 3723014 (1973-03-01), Nanba
patent: 3793522 (1974-02-01), Coleby et al.
patent: 3843880 (1974-10-01), Tsuchiyasu
patent: 3879138 (1975-04-01), Kobayashi
patent: 3984675 (1976-10-01), Corcoran et al.
patent: 4415803 (1983-11-01), Muoi
patent: 4421985 (1983-12-01), Billingsley et al.
patent: 4567446 (1986-01-01), Konishi

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