A trench MOS-transistor includes a body region strengthened by an implantation area that faces the drain region to increase the avalanche resistance. The bucket has a bottom screen having front and rear edges being rotatable about the top edge of the blade section. The lattice reduces cross-talk between signal conductors in the plugs and jacks. Furthermore it comprises an evaluation device for measuring the voltage drop over the measuring resistor and for evaluating this current measurement. The first LDPC code encoder transmits an output signal to the decoding apparatus at odd numbered retransmissions in response to a retransmission request from the decoding apparatus, and the second LDPC code encoder transmits an output signal to the decoding apparatus at even numbered retransmissions in response to the retransmission request from the decoding apparatus. If abnormal, held content of the state holding circuit is cleared.