Those are very expensive and at that high voltage even 100M is a big load (= 100M=20 at 30kV is 9W). /Ruben > I wonder if some high value (>100M), high voltage (30kV) resistor > might be suitable to protect against over voltage by providing a > minimum load to the transformers? >=20 > --=20 > Jason White --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .