Hallo!

Inzwischen habe ich es skizziert:
Code:
                        VCC = 12 V
                         +
                         |
                      +--+--+
                      |     |
                     .-.    |
                   R1| |    |
                     | |    |
                     '-'    |
                      |   |<
                      +---| T1
                      |   |\
                     .-.    |
                   R2| |    |
                     | |    |
                     '-'   .-.
               R3     |   ( X ) RL
               ___  |/     '-'
     vom µC >-|___|-| T2    |
                    |>      |
                      |     |
                     ===   ===
                     GND   GND

(created by AACircuit v1.28.6 beta 04/19/05 tech-chat.de)