An apparatus and method for applying a voltage across silicon rods in a CVD reactor has a series connection wherein the silicon rods may be inserted as resistors. In the second-stage and subsequent modulation quantization loops, the difference signal between the input of the local quantizer of the previous stage and the output of the DA converter of the previous stage is used as an analog input signal. The water held in the reservoir can be carbonated using the CO2 when a user activates a CO2 activation mechanism. The guiding step ensures that the spring contacts the socket during assembly and, therefore, ensures that a conductive path from the socket to the spring is provided. To avoid interference of the sound and the vibration sensor, the alarm clock is provided with a filter coupled to the vibration sensor and the control circuit. These peptides may be used in vitro to help control fungal infection.