Electronic control module for a detonator having a printed circuit board embedded in resin inside a tubular casing

摘要

An electronic control module for a detonator comprises a printed circuit board equipped with components of the circuit, which is enclosed in a tubular casing and is embedded in a blocking resin held inside the casing. A shielding screen is interposed between the board and the tubular casing and has an insulating face turned downward the casing and a conductive face turned downward towards the board. The conductive face is electrically connected to the earth wire of the printed circuit board.