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Plasma - pulse method of reconstructing the picture tubes
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Radio components, like everything in this world, are subject to aging. This process also applies to kinescopes. In the tube, during its long operation, a slag is formed on the cathode, it is very difficult to remove it by the traditional method using a spark discharge.
The scheme presented here allows more efficiently to cope with this problem. In this technological solution, a plasma-pulse method for reconstructing a kinescope is used.
The scheme works as follows
On the cathode of the tube, relative to the modulator, short impulses of a voltage of 2 kHz, a duty cycle of the meander type, an amplitude of 300 V are applied. The voltage on the glow of the kinescope during the restoration is first about 8V (about 5 bursts of pulses), then 6.3V (about 5-6 bursts of pulses of 3 seconds). The process can be observed through the throat of the kinescope (a red-yellow glow in the cathode-modulator zone is formed Restored cannon). I have successfully tested this recovery method, it is effective in most cases of recovery.
Attention!
When working with the device, do not forget the safety rules!
Date of publication 22.03.2003.
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