A novel automatic electronic resettable circuit for detecting switching of failing fluorescent lamp

摘要

The main purpose of this study is to develop a criterion for detecting a failing fluorescent lamp with magnetic ballast and latch it to switch off condition until it is replaced. The circuit developed detects, switches off the lamp & remembers that it is faulty. On subsequent switching 'On' of the power to the circuit, the lamp does not make any attempt to start. This prevents any further high voltage appearing on the magnetic ballast to protect the ballast from failure. It prevents injection of emi into the power limes. The novel method employed does so using non-volatile memory in the circuit.