Process for the connection of electrical loads to the terminals of an amplifier, and for detection of a possible defect of connection of these loads

Process for connection of electrical loads (A5, A6;

• A7, A8, A9) to terminals (B1, B2) of an amplifier (Am), and for detection of a possible connection defect of said electrical loads, said process being characterized in that:
• an electrical load (A5;
• A7) is connected to two terminals (B1, B2) of the amplifier (Am) according to a complete-bridge mounting consisting in connecting each of the poles of said electrical load to one of said terminals by means of an electrical connection branch (P6, P7;
• P9, P10),
• connecting at least one second electrical load (A6;
• A8, A9) according to a half-bridge mounting consisting in connecting one of the poles of each of said electrical loads to ground, and the other pole of this electrical load to one of the connection branches (P7;
• P9, P10) of the complete bridge, by an electrical connection branch (P8;
• P11, P12),
• in a preliminary phase, measuring and memorizing reference values representative of currents flowing in each of the connection branches (P6-P8;
• P9-P12) of the complete-bridge mounting and half-bridge mountings, and deducing from these measurements and memorizing reference values of the currents flowing through each of the two terminals (B1, B2),
• and during operation of the amplifier (Am), measuring the current passing through each of the two terminals (B1, B2), comparing each measured value to the corresponding memorized reference value, so as to detect a possible decrease of the measured current representative of a connection defect in a connection branch (P6-P8;
• P9-P12) connected to the terminal in question, and upon a significant decrease of at least one of the measured currents, carrying out a comparison of the measured values of the two currents each flowing through the two terminals (B1, B2) with memorized reference values representative of the currents flowing in each of the connection branches, so as to deduce therefrom the connection branch or branches containing a connection defect of an electrical load (A5, A6;
• A7-A9).