Quote:
Originally Posted by Tom Albrecht
TV Engineer,
Any tips on where to get a solid state voltage tripler? Do a lot of modern CRT sets have them, or is it something a bit obscure to find?
Tom
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Almost any American solid state color set (and a few hybrids) from the early 70s til the early 80s have them. Zenith, Magnavox, Sylvania, RCA, Admiral... they all used them at some point. You can also order one new with the ECG/NTE523 part number. They're about $25. Hook the output of your flyback to the in, ground the ground pin, and connect the output to your CRT. Ignore any remaining pins. That is all there is to it.
Somebody here mentioned the 2 Meg resistors in the original tripler circuit being bad...
They did fail, but if yours were bad, the regulation would be even worse, and you might not have any high voltage at all. I experienced this with my set too. I replaced them, but the HV regulation still sucked, which was when I came up with the solid state tripler idea.
Let us know how it works for you if you try it.