Quote:
Originally Posted by Kevin Kuehn
Those screen shots look pretty good to me.
Dummy question here: What's the reason that HOT circuits typically don't incorporate some type of current regulation circuitry? The way I understand it, is that if you loose Horizontal drive, you end up with a melt down.
Kevin
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The simple answer is that anything more sophisticated than a fuse would have been way too expensive with tube technology - the simplest current comparison circuit would require at least one more tube stage. Safety shut downs became affordable with the use of transistors, and eminently affordable with ICs. Even then, there were cases of tolerance issues causing unnecessary shutdowns sometimes. With the wide tolerances on consumer tube circuits, this would have reached intolerable false failure rates.