Tracor, Inc.

David W Wallace

Beryl W Cotton

As voltage and frequency dependent multiple payload dispenser system in which a variable voltage or frequency signal source is used to selectively fire squibs based on the pass voltages and pass frequencies of a filter network. The filter network is placed near, or incorporated into, the payload dispenser itself or attached to the magazine, reducing system wiring.

Frequency and voltage dependent multiple payload dispenser

A multiple payload cartridge connectible to a source of firing signals by two connecting wires having a first and a second branch each having a squib therein connected in parallel across the connecting wires is characterized by a zener diode connected in series with the second squib in the branch containing the same. The zener diode prevents the flow of current through the branch with the second squib until a firing signal of a predetermined polarity and a magnitude greater than the breakdown voltage of the zener diode is applied across the second branch. The zener diode responds to that firing signal by breaking down into a low resistance conduction path to thereby permit an electrical current sufficient to raise the second squib to incandescence to flow therethrough.

Voltage-coded multiple payload cartridge

A multiple payload cartridge employing circuit components in the squib portion thereof to allow for separate or sequential firing thereof, and hence separate payload ejection, through two-wire connections. Various techniques include the use of a repositionable switch to provide sequential ground connections; the use of mechanical interrupters, e.g., spring-type, crushable-element-type or domed-pop-action type; the use of resistive voltage dividers to permit discrimination in squib firing via applied voltage amplitudes; the use of diodes to permit discrimination in squib firing via applied voltage polarities; and combinations of the above.

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Austin, TX, United States of America

David W Wallace