THE GREAT MULLARD MAGIC BLOG — CRT AGEING

 After exhausting and capping, the tubes were fitted with their bases and still in their linen bags, were transferred onto a conveyor belt where each tube was plugged into an adaptor which supplied the appropriate voltages to the heater, cathode, grid and first anode as well as a heat from an embedded element which baked the cement inside the base cap thus hardening and attaching the base to the bulb neck: - After heating and as power was applied to the tube, the heater fired and cathode emission commenced and this initial 'firing' reduced a part of the cathode...