A drive train for a hybrid vehicle is described herein. A position detecting software running on the electronic device analyzes the audio signal. The intermediate voltage charge pump circuit comprises switching elements, a first charge pump circuit comprising capacitors, a second charge pump circuit comprising switching elements, capacitors and an equalizer comprising switching elements. The first network node receives, from the first layer, any existing first layer congestion level indication, indicating congestion between the first layer of the first network node and the first layer of the second network node. In a preferred embodiment, the apparatus additionally comprises: a drill member coupled with a motor, an irrigation tube and an aspiration tube.