Abstract: This printed circuit board (12) comprising: a first portion (20) having first electronic components (22) of which the earth electrode is on a first voltage source (14); a second portion (24) having second electronic components (26) of which the earth electrode is on a second voltage source (16); a third portion (28) inserted between the first portion (20) and the second portion (24); a switched-mode power supply circuit (32) connecting the first portion (20) and the second portion (24); the said second portion (24) also comprising an electronic component (30) powered by the said first voltage source (14), is characterized in that it also comprises detection means (34) for detecting a drop in electrical consumption of the component (30) and switching means for switching the switched-mode power supply circuit (32) when a predetermined drop in electrical consumption of the said component (30) is detected.

Abstract: This printed circuit board (12) comprising: a first portion (20) having first electronic components (22) of which the earth electrode is on a first voltage source (14); a second portion (24) having second electronic components (26) of which the earth electrode is on a second voltage source (16); a switched-mode power supply circuit (34) of which one input is connected to the first portion (20) and of which at least one output is connected to the second portion (24), is characterized in that it comprises modification means (36) for modifying a switching frequency of the switched-mode power supply circuit (34) depending on data values (32) to be transmitted between the first portion (20) and the second portion (24), the said data being able to take at least two distinct values.

Abstract: This printed circuit board (12) comprising: a first portion (20) having first electronic components (22) of which the earth electrode is on a first voltage source (14); a second portion (24) having second electronic components (26) of which the earth electrode is on a second voltage source (16); a third portion (28) inserted between the first portion (20) and the second portion (24); a switched-mode power supply circuit (32) connecting the first portion (20) and the second portion (24); the said second portion (24) also comprising an electronic component (30) powered by the said first voltage source (14), is characterized in that it also comprises detection means (34) for detecting a drop in electrical consumption of the component (30) and switching means for switching the switched-mode power supply circuit (32) when a predetermined drop in electrical consumption of the said component (30) is detected.

Abstract: This printed circuit board (12) comprising: a first portion (20) having first electronic components (22) of which the earth electrode is on a first voltage source (14); a second portion (24) having second electronic components (26) of which the earth electrode is on a second voltage source (16); a switched-mode power supply circuit (34) of which one input is connected to the first portion (20) and of which at least one output is connected to the second portion (24), is characterized in that it comprises modification means (36) for modifying a switching frequency of the switched-mode power supply circuit (34) depending on data values (32) to be transmitted between the first portion (20) and the second portion (24), the said data being able to take at least two distinct values.