General Knowledge - Technology - Discussion

Choke is a inductive coil (wire wound on iron core, made up of iron stampings). When current flow from choke, magnetic field will developed, strength of which depends on inductance (L) in Henry, or L= do/di (variation of flux (do) to the variation of current (di). Voltage induced in choke, could be given by equation, V = do/dt (variation of flux with variation of time) , or V= L (di/dt). To get di/dt starter is provided in series with choke, or starter, brings the current from value I to zero in small time (switch off time) dt, and voltage V developed across choke, sufficient to produce spark and continue the flow of electrons in fluorescent tube to glow, hence once the tube light glow, no need of starter, you can use it, to glow another tube light, what electricians are doing in function decoration used tube lights (starts many using one starter).