Register now or log in to join your professional community.
Tube contains vacuum. to make conduction though it we need a kilo volts of electricity. so a normal230v can not start conduction through the vacuum inside it. so we use the principle that when ever a charging coil is disturbed suddenly, it will produce a kv of electricity across its terminals. for this purpose, we use choke as coil as starter to interrupt the charging coil which develops a kv across it. this kv in addition to supply voltage will helps to conduct through vacuum. the lourcent coating will give the respective color. once conduction started, no need of that choke.
