The ignition chamber (13) is disposed in a base part (10) of the housing and contains an ignition device (12) and an ignition charge (14) charged therein.

A combustion chamber (2) with a gas-generating charge (3) surrounds an igniting chamber with an igniter and an igniting charge (1).

An electronic detonator (1) which comprises an ignition charge, a battery unit (19) for emitting igniter current for initiating the ignition charge, and an electronic circuit (4) for controlling said emission of igniter current.

The free cross-section of the ignition channel (3) ensures a virtually simultaneous ignition of the ignition charge (7) over the overall charge length.

The ignition charge (3) is thus continuously pressed against the heating filament (2) so that a highly reliable ignition system is provided.

The invention relates to a pyrotechnical primer comprising a heating filament (2), an ignition charge (3) and an amplifying charge (5).

The limiting wall (4) of the ignition channel (3) may consist of a tube (14) in whose wall cross-section an ignition charge (5) is incorporated.

The propellant module (1) comprises over the entire length of the module (1) a co-axially-arranged free ignition channel (3) which is formed by an ignition charge (5, 7) which is symmetrically arranged to the end-walls (8, 9) of the container (10).

An electric detonator of simple structure in which initiator and ignition charge are eliminated and secondary explosive, i.e. base charge, can be ignited directly.

According to the invention, an elastic intermediate layer (4) is provided between the ignition charge (3) and the amplifying charge (5), said layer being compressed due to pressure inside the primer.