Water filter replacement indicator

A water filter replacement indicator for apparatus having a filter for purifying water comprising:

• a power supply having means for converting an alternating current to a direct current along with an accompanying voltage reduction,
• a direct current auxiliary power supply interconnected with the power supply such that when voltage of said power supply drops below voltage of the auxiliary power supply the auxiliary power supply continues to furnish current,
• a timer operable to receive electrical energy from at least one of the power supplies, generating a first square wave output signal indicating timed intervals,
• a divider operable to receive the first square wave output signal from the timer quantifying the signal until a predetermined number of square wave modulations are perceived, said divider then producing a second square wave output signal,
• a counter operable to receive the second square wave output signal from the divider until a predetermined number of square wave events are perceived, said counter then producing a third output signal a fourth output signal and a fifth output signal,
• a green light having a first light circuit in electrical communication with the counter third output signal energizing said green light through the first light circuit indicating that the filter is operating within its usable life,
• a yellow light having a second light circuit in electrical communication with the counter fourth output signal energizing said yellow light through the second light circuit indicating that the filter is about to reach its predetermined life span, and
• a red light having a third light circuit, including an oscillator, in electrical communication with the counter fifth output signal energizing said red light through the third light circuit allowing the oscillator to produce a momentary interruption in the third light circuit creating a flashing effect designating that it is time for filter replacement, further, when said red light is energized said counter third output signal disconnects the green light and simultaneously said counter fourth output signal disengages the yellow light.

A water filter replacement indicator for apparatus having a filter for purifying water comprising:

• a power supply including means for converting an alternating current to a direct current,
• an auxiliary power supply interconnected with the power supply such that when voltage of said power supply drops below voltage of the auxiliary power supply the auxiliary power supply continues to furnish current,
• a timer operable to receive electrical energy from at least one of the power supplies, generating a first square wave signal indicating timed intervals,
• a divider operable to receive the timer first signal quantifying the signal until a predetermined number of square wave modulations are perceived, said divider then producing a second square wave output signal,
• a counter operable to receive the second signal from the divider until a predetermined number of square wave events are perceived, said counter then producing plurality of output signals,
• a plurality of lights adapted to receive output signals from the counter with the lights indicating that the filter is operating within its usable life, the filter is about to reach its predetermined life span or a solitary flashing light designating that it is time for filter replacement.