ELECTRONIC CONTROLLER FOR A WATER PURIFYING UNIT

摘要

AN ELECTRONIC CONTROLLER FOR A WATER PURIFYING UNIT An electronic controller is disclosed for a water purifying unit for providing monitoring and test functions to indicate, for example, when the filter should be replaced. The electronic controller apparatus comprises an analog ASIC circuit having a power control section, a conductivity filter testing section, a light emitting diode (LED) driving section, and a bias section. The LED driving section is responsive to the conductivity filter testing section for indicating when the filter should be replaced. The power control section, conductivity filter testing section LED driving section and bias section are all operated in a controlled timed relation by a digital ASIC logic system to minimize power use.