CRT over-voltage protection circuit

Published:2011/6/20 21:46:00 Author:TaoXi | Keyword: CRT, over-voltage, protection | From:SeekIC

Because the distance between the poles of the CRT is very small, and also because some reasons of the production process, so if we add the ten thousand volt high voltage on the CRT's anode, there will be the jump-fire phenomenon between the anode and the other electrodes. In order to eliminate this phenomenon, some TVs install the disrharge tube on the CRT or use the metal clearance mode, but the two methods have poor reliability, if we use the ZnO voltage sensitive resistance, the effect will be good.



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