I may be missing something, but neither one of the schematics shown in
your link will work as you want.
For example, in link 2, you cannot get 70V out from a 24V AC source
without some sort of voltage trippling or use of reactive components.
Neither of these is present.
In link 1, you show a 24V regulater incorrectly wired and employed
above its ratings.
Did you leave something out perhaps, like your input and output leads?
Your post leaves me a little confused, but for me that's nothing new.
:-)
Harry C.
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