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Adjustable high voltage shunt regulators based on a string of zener diodes combined with a totem pole arrangement of bipolar transistors were fairly common in high end display monitor high voltage power supplies throughout the 80's. They were used for the Focus, G2 and G1 outputs, and could be very tightly regulated if used in conjunction with a feedback loop and error amplifier. If I recall correctly, we used 1N5281 zeners and 2N6517 transistors for the Focus and G2 circuits, and 2N6520 transistors for the G1. I used to design them for a living. Great idea for your CT100!
Last edited by hi_volt; 01-23-2014 at 06:50 AM.
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