It's not the cost, but the availability. Ever since the demise of vacuum tubes in the 1970's, high-ish voltage transformers have been getting scarce. The only exception being transformers used in microwave ovens, which produce way too much voltage. I'm leery of salvaged transformers because they can degrade with age, and it's unlikely you will find 2 or more of the same item.
Hooking 2 transformers back-to-back is another method to get isolation, though less efficient. As long as nothing is electrically exposed, it should be fine to use (or should I say, misuse) a dual-primary transformer. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/090b7aab-a39b-4ea9-9c86-1c6984e5c65f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
