Apparatus for restoring cathode-ray tubes

An assembly for the regeneration of a cathode-ray tube for a TV-set and for the visual check of cathode conditions, said tube having pins two of which are connected to a filament and the other of which are respectively connected to a cathode, a grid, and first, focusing and main anodes, said assembly comprising a power supply, a first feeder and a second feeder series-connected with each other, said first feeder being directly connectable with said power supply and including a set of at least first, second, third and fourth terminals, the first terminal being grounded, said feeder being designed to apply a voltage in the range from 50 V to 5000 V to the second terminal, and to apply a voltage in the range of 6 to 12 V between the third and the fourth terminals, said second feeder being directly connected with said first and second terminals of said first feeder, said first feeder including a voltage source, said second feeder being connected with said voltage source, said second feeder comprising at least one set of first, second, third, fourth, fifth, sixth and seventh terminals, of which the first and second are directly connected with the third and fourth terminals of said first feeder, said second feeder being adapted to apply a voltage in the range of 0 V to -50 V to the fourth terminal thereof, a voltage in the range from 150 V to 400 V to the fifth terminal thereof, a voltage in the range of 1000 V to 3000 V to the sixth terminal thereof, and in the range from 4000 V to 7000 V to the seventh terminal thereof, the third terminal of the second feeder being grounded, the third and fourth terminals of the first feeder and the first and second terminals of the second feeder being connectable to the pins connected to said filament, said first and said second terminals of said first feeder being connectable to said pins connected to said grid and said cathode, respectively, said third, said fourth, said fifth, said sixth and said seventh terminals of said second feeder being connectable to the pins connected to said cathode, said grid, said first anode, said focusing anode and said main anode, respectively.