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Inexpensive and workable scheme of the device for
CRT recovery

See also:

When developing this device was set a goal to do as much as possible cheap and simple design for the regeneration of kinescopes, however the device has a number of advantages with respect to other devices using the method of burning the cathode namely; It restores most of the CRT, even if no device type PPVK them takes longer, if they are of course nebyli "killed" PPVK device, there is no chance of burning the picture tube cathode, ease of manufacture of the device.

Driving device for restoration of kinescopes.

Operation is based on applying a large voltage across the damping resistor R3-R6 in reverse polarity to the cathode and the modulator picture tube, as is known, all trash is deposited on the negative territory in addition it still is heating up at the cathode is obtained oxide, minus we in this device is connected to the modulator occurs monoxide transfer with cathode and its recovery in the metal on the modulator.

Operation:

  1. Wear on the top of the neck of the tube coils L1 and L2;

  2. Connect the glow of the tube;

  3. Connect a wire to the cathode and to the modulator + -;
  4. Turn on the device to the network, wait for the heat to warm up with the switch S1 will start high-voltage inverter.

Between the cathode and the modulator there blue glow, turn switch S2 generator of electromagnetic pulses that allow evenly remove oxide from the entire surface of the cathode. The recovery time of 1-3 hours each gun.

On T1 transistor assembled converter voltage on 2-4kilovolta, inverter power supply - 12volt, current consumption 2-2.5 amps. Transformer TR1 TVS110pts11 can be applied to any other. The transistor is mounted on the radiator. On thyristor ku202n assembled generator of electromagnetic pulses on the principle of electric rods, L1 coil, L2 are wound on different frames wide by 10 mm and the diameter of the neck of the tube, contain 200-300vitkov wire 0,5-0,7mm.

When establishing the unit connected to the point A neonku (output multiplier) and choose the polarity of the windings l and ll, to neonka shone at point A.

The first device was made without diodes and a generator of electromagnetic pulses, that is, from the point A immediately went to R3, R6, and like a good idea to recover.

Morozov Yuri Alexandrovich

Attention!
When working with the appliance do not forget about safety precautions!

Publication date 22.03.2003gg.