Hallo Schokohoernl!

Ich stelle mir das in allgemeinem so vor:

MfG
Code:
                                                    Rm
                                                    ___
                                                 +-|___|-+-+
                                                 |       | |
                                              ||-+       | -
                          .----------.        ||<-       |---
     PWM >----------------| Treiber  |--------||-+       | |
                          '----------'           |       |===
                                                 |       |GND
 µC  U/I <-----+                            Rf   |       |
               |          .----------.      ___  |       |
               V o--------|Verstärker|---+-|___|-+       |
     ADC <---o--__        '----------'   |       |       |
                 o-+---+                ---     .-.      |
                   |   |              Cf---     | |Rs    |
                  .-. .-.                |      | |      |
                R2| | | |R1             ===     '-'      |
                  | | | |               GND      |       |
                  '-' '-'                       ===      |
                   |   |                        GND      |
                  ===  +---------------------------------+
                  GND