Abstract: An integrated ignition-transformer assembly for the cylinder of a heat engine having controlled ignition, the assembly being of the type comprising a tubular body (11) delimiting: an internal shoulder (12), mounting means (13) on one side of said shoulder for mounting on the stem of a spark plug (15), and a housing (14) on the other side of said shoulder containing an axially fixed transformer coil (24) which is encapsulated in a dielectric coating (25) and which includes a terminal (30) for making contact with the spark plug; said mounting means (13) being constituted by disconnectably fixing means for co-operating with a complementary thread provided on the base (17) of an adopted spark plug; and said terminal (30) being in contact with the terminal pin (35) of a spark plug and being surrounded by an internal sleeve (32) of dielectric material which extends said transformer coil (24) to said shoulder (12), and which is intended to receive, in sealed manner, the stem (16) of the spark plug on which the assem

Abstract: An electromagnetic pickup includes an insulating body that mounts a coil of wire surrounding a spool portion at one end of the body. A magnetic element is disposed within an axial passage through the body, including its spool portion. A sleeve-like molded plastic cover surrounds the spool portion and other portions of the body, and an encapsulation occupies the spaces within the cover that are not occupied by the body and elements mounted thereto. One end of the magnetic element extends to one end of the body and abuts the inner surface of the wall that encloses one end of the cover. The other end of the body is provided with a self-centering flange that engages the inner surface of the cover, and the other end of the cover is provided with the flange that is embedded in the encapsulation that also forms a seat external of the cover.