5. Packaging circuits

Each detector is associated with conditioning circuits that depend on the signal delivered. There are four main types of conditioning circuit:

• pulse circuits ;

• current measurement circuits (extended range) ;

• linear current measurement circuits (fixed range) ;

• circuits for fluctuations.

In addition to the functions specific to signal shaping, conditioning includes support functions such as the high-voltage power supply needed to polarize the detector, and the low-voltage power supplies required for the circuits themselves to operate correctly. As with all instrumentation used for reactor safety, conditioning is complemented by monitoring functions to guarantee the validity of the measurement. For example,...