HV treatment of CRT - with end of tube collar connected into socket immersed in liq. dielectric and with HV applied to socket

摘要

The base (17) of the CRT is inserted into a socket (15). The contacts (23) of the socket are connected to conductors (13). The socket (15) is wholly immersed in a liquid dielectric (33) in a glass container (35). Treatment of at least 25 kV is applied to the terminals of the socket (15) via a cable (31). The presence of the liquid dielectric which fills the space between high, low voltage and or earth connections prevents the formation of an electrical arc between the connections. The dielectric has a boiling point between 30 deg. and 80 deg.C at a presure of 1 bar and a dielectric strength between 12 and 24 kV/mm at 25 deg.C.