A disc filter is provided having a controller for controlling effluent surges that are produced by the disc filter. By baking the electrically conductive material and anti-oxidant material coated separately onto the resin semi-finished good, the conductive layer can be made by using a minimum quantity of electrically conductive material, and the oxidation rate of the conductive layer exposed in air can be retarded significantly. A first portion of the transmit pulse is processed by the radar system to form transmit pulse data. The controller is coupled to switch the switch in response to the feedback signal to regulate the output of the power supply. In particular the methods are accomplished by administering to a subject CI-994 or dinaline or a pharmaceutically acceptable salt, ester, prodrug or metabolite thereof. Other embodiments may be described and claimed.