To demagnetize a transformer in a single-ended forward DCDC converter with self-driven synchronized rectifiers connected across the secondary winding of the transformer, a diode is connected in series with a capacitor across the primary winding of the transformer. At least one another module is configured to transfer the conductive particles to the planar insulating substrate, wherein the conductive particles are arranged to gather according to the predefined pattern. The operating system will not initiate an application if insufficient resources are available for executing the tasks of the application.