2 results about "Pyrotechnic initiator" patented technology

An arrangement has an opto-pyrotechnic initiator, at least one laser, and an optical fibre, via which the laser radiation of the laser is guided to the opto-pyrotechnic initiator. Also disclosed is a method for improving the safety of such an opto-pyrotechnic initiator. At least one optical filter element having power-dependent or intensity-dependent transmission or reflection is arranged in the beam path of the laser radiation between the laser and the initiating impingement location of the laser radiation in the initiator. The filter element and the beam guidance for the laser radiation are selected such that for a laser power of the laser, that is intended to effect an initiation, the filter element has a higher transmission or reflection or can be switched to a higher transmission or reflection than for a lower laser power by application of an optical or electronic signal that is independent of the laser radiation.

The invention relates to a system for protecting an electrical circuit, which system comprises: - a main pyrotechnic circuit breaker (1) comprising: • a main electrical conductor (100); • a main electro-pyrotechnic initiator (10) arranged to cause the main electrical conductor (100) to be cut off; - a device (2) for disconnecting the electrical circuit, which device comprises: • a fuse element (21); • a priming circuit breaker (20) comprising:  a priming conductor (200);  a pyrotechnic priming actuator (201) arranged to be controlled by an electronic control unit so as to cut off the priming conductor (200), characterised in that a cut-off voltage of the priming circuit breaker (20) and / or a cut-off voltage of the fuse element (21) are each lower than a supply voltage of the electrical circuit, and in that the main electro-pyrotechnic initiator (10) is connected to the disconnection device (2) in order to be triggered by the disconnection device (2).