The difference between a ballast and a transformer
The transformer usually needs two windings, and the electromagnetic induction principle is used to obtain different voltages, some of which are similar to the ballast, but different functions and USES.
Are core ballast and transformer inductance components, ballast whatever several windings, are linked in the circuit, using the impedance current limitation, other such as qualcomm low-pass choke, current limiting circle and so on.
Electronic ballast is the use of the characteristics of semiconductor materials limited current equipment Normal ballast and transformer principle is the same, all is made using the electromagnetic induction principle, just different functions, a used to limit the current, one is used to change the voltage size. Fluorescent lamps with ballast because its startup needs large current and high voltage, after being launched, only need low voltage and low current to maintain the status of work, we must ballast. Other transformers are due to their rated voltages and must be adjusted.