Luminous tube protection circuit

Details Luminous tube protection circuit Luminous tube protection circuit

H - Electricity

05

B

315/41

H05B 41/36 (2006.01) H02H 3/07 (2006.01) H02H 5/04 (2006.01) H02H 7/00 (2006.01) H05B 41/285 (2006.01)

Patent

CA 2030848

A protection circuit for monitoring the power from a luminous tube transformer to a luminous tube including sensor connected to a secondary of the transformer, a window compar- ator circuit connected to the sensor and providing a fault signal when the sensor output exceeds the window limits, and a driver switching off power to the transformer primary when the driver receives a fault signal. A temperature compensation circuit monitors the ambient air temperature for providing a time delay before disconnecting the power supply until the luminous tube stabilizes, and also turns off the power supply when the ambient temperature exceeds upper and lower limits.

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