Water sterilization apparatus

Details Water sterilization apparatus Water sterilization apparatus

1977-06-08

1978-06-27

Mack, John H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204149, C02B 182, C25B 1500

Patent

active

040973557

ABSTRACT:
The electrodes of a water purification cell are immersed in the water to be sterilized. The current through the cell is kept constant by varying the resistance of an emitter-collector circuit of a transistor connected in series with the cell to compensate for changes in the cell's internal resistance. The voltage across the cell is monitored by two threshold circuits to determine if the conductivity of the water is within an allowable conductivity range. If the conductivity falls outside the range, a light-emitting diode is energized. The light-emitting diode is also energized if the voltage of the battery supplying the power for the cell falls below a given value. If no water is present in the supply line to the cell, a switching transistor is blocked, thereby disconnecting most of the equipment from one side of the battery.

REFERENCES:
patent: 3095365 (1963-06-01), Green
patent: 3479256 (1969-11-01), Smith et al.
patent: 3566246 (1971-02-01), Seer, Jr.
patent: 3796919 (1974-03-01), Johnson
patent: 3813666 (1974-04-01), Gately
patent: 3865710 (1975-02-01), Phipps
patent: 3933606 (1976-01-01), Harms

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