How can you start-up the 40w tube lite with 230v AC/DC without using any choke/Coil?
It’s possible by means of Electronic chokes,otherwise it’s not possible to ionize the particles in tube light with normal voltage.
Conventional tubelights require a choke for two purposes:
1. To momentarily increase voltage to strike the arc inside the tubelight.
2. Tubelights have negative resistance. This means that once arc is struck, they keep drawing more current until they burn out. Chokes serve the purpose of reducing the current drawn by tubelight once arc is struck within tubelight.