Full wave rectifier

UM1955

10/28

DocID028405 Rev 1

4

Full wave rectifier

The full wave rectifier configuration allows rectification of an input signal. This means that by

defining a reference voltage with a potentiometer, all signals below it will become positive.

When the voltage goes above the reference, the output voltage will not change.

4.1

Schematic diagram

Figure 5 shows the circuit schematic of the full wave rectifier configuration.

Figure 5. Full wave rectifier configuration circuit schematic

4.2

How to set up the board

The input signal must be connected to the Rect_in pin within the rectifier expansion board

section. Similarly, the output signal is available on the Rect_out pin. The output voltage of

the rectifier structure is not intended to be connected to any microcontroller input on the

board since this configuration is most often connected to another analog block.

4.3

Theoretical output

Thus, we have two formulas to define this configuration:

4.4

Measurement example

Input voltage = -1 V