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Text and graphics on CRT
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Topic: Text and graphics on CRT (Read 11736 times)
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SeanB
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Re: Text and graphics on CRT
«
Reply #25 on:
December 14, 2012, 03:16:39 pm »
They use a voltage derived from the other windings as a sample of the EHT generated. If it gets too high generally there is a zener or gas discharge tube that fires and shuts down the power supply.
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Mr Smiley
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Re: Text and graphics on CRT
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Reply #26 on:
December 14, 2012, 04:51:45 pm »
They monitor the B+ voltage, as that drives the HV.
All you ever wanted to know about CRT's and monitors
https://www.youtube.com/user/randyfromm/videos
Check out the 'CRT monitors' parts 1 to 4.
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EEVblog Electronics Community Forum
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Text and graphics on CRT
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