Water treatment system bulb status monitor circuit

Details Water treatment system bulb status monitor circuit Water treatment system bulb status monitor circuit

G - Physics

01

R

G01R 31/02 (2006.01) H05B 41/285 (2006.01) H05B 41/36 (2006.01)

Patent

CA 2111620

The specification discloses a circuit for monitoring the status of an ultraviolet (UV) light bulb in a water treatment system. The circuit uses either transformers or zener diodes with opto-isolators to monitor the voltage across the bulb. A logic signal is emitted when abnormally high voltage is detected, for example, indicating that the bulb is burned out, broken, or missing. A logic signal also is emitted when abnormally low voltage is detected, for example, indicating that the starter circuit is short circuited or that power is interrupted.

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