Choke

[boby]

how choke in tube light gives high voltage impulse at the time of starting and how it gives normal voltage after the tube glown... any one explain please

[marke]

Hello boby

 

There is a starter which operates when the voltage across the tube is high, and puts a temporary short across the tube and then releases. This creates a field in the choke which then collapses generating a voltage strike due to the back emf of the collapsing field.

When the tube is lit, the voltage is lower and the starter does not strike.

 

Best regards,