Lock out proximity fuze amplifier

Details Lock out proximity fuze amplifier Lock out proximity fuze amplifier

1975-02-28

1980-10-14

Hubler, Malcolm F.

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

307231, 328 99, 328114, F42C 1100, H03K 522, H03K 1700

Patent

active

042274621

ABSTRACT:
A discriminator circuit having utility in proximity fuze firing circuits is apable of distinguishing between spurious and proper signals on the basis of both amplitude and rate of amplitude rise. A firing switch, operated by a slow-charging trigger circuit, and a lock out switch, operated by a fast-charging trigger circuit, are both triggered by the same signal. If the rate of input signal envelope rise is faster than that for a proper firing signal, the lock out switch fires and inhibits triggering of the firing switch. The trigger circuits are biased to permit the firing switch to be triggered before the lock out switch when the input signal rate of rise is slow enough to be followed by the slow-charging trigger circuit. For signal rates of rise which are slower than that associated with a proper signal, a capacitor in the slow-charging trigger circuit becomes charged to block triggering of the firing switch.

REFERENCES:
patent: 3260861 (1966-07-01), Dalley
patent: 3316451 (1967-04-01), Silberman
patent: 3424924 (1969-01-01), Leisinger et al.
patent: 3665860 (1972-05-01), West
patent: 3808459 (1974-04-01), Guimier

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