Other supply voltages are provided by the LOT. It supplies +50 V (only for large screen
sets), +13 V, +8 V, +5V and a +200 V source for the video drive. The secondary
voltages of the LOT are monitored by the ‘EHT information’ lines. These lines are fed to
the video processor part of the UOC IC 7200on pins 11 and 34.
This circuit will shut ‘off’ the horizontal drive in case of over-voltage or excessive beam current.
Figure:
Figure:
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