Michael J Flaherty

US Patent:

42455588, Jan 20, 1981

Filed:

Sep 26, 1963

Appl. No.:

4/311921

Inventors:

Michael Flaherty - Fullerton CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

F42C 1302

US Classification:

102213

Abstract:

1. An electronic proximity fuze for a projectile comprising transducer me for converting infrared radiation to an electrical signal, amplifying means connected to said transducer for amplifying said signal, said amplifying means including automatic gain control means for decreasing the gain of said amplifying means upon occurrence of a slowly rising signal, electronic switch means, a source of electrical energy, a detonator, means connecting said switch means said source and said detonator in electrical series circuit, means connecting said amplifying means and said electronic switch means for closing said switch means upon occurrence of a rapidly rising signal of predetermined magnitude, said last named means operating to reduce said predetermined magnitude of the signal when said automatic gain control has decreased the gain of said amplifying means.