Safety circuit with several signal inputs for ammunition - uses two different criteria for safety circuit disarming in selectable timing sequence

The circuit is intended for firing a missile, or a mine. It has several signal inputs and its deblocking takes place, using two different criteria in a selectable time period, e.g. provided by a launching or separation contactless sensor. The used electrical pulse of launching is defined by one or several following criteria, i.e. a given amplitude within upper and lower limits, an adjustable minimum period, a selectable time period, and a given output impedance. The circuit has an input (1) for an activation starting signal, coupled via a filter (4) and an impedance converter (5) to a monoflop (8). The latter output is connected to an input of a logic element (9). A second signal input forms a contact sensor (10), signalling the launching of the missile. The sensor is connected to a second monoflop (12) via a series-connected amplifier (11). The monoflop output is connected to a second input of the logic element.