RJT>I remember seeing projects in the old Popular Electronics that used a 90V
RJT>battery,  most notably the original "nonsense box" (a set of astable
RJT>oscillators using neon bulbs) that the original author potted in clear acry
RJT> I also remember "9V" batteries in other than the original size, all
RJT>rectangular but some significantly larger than the
"standard" size.  And th
RJT>there were all those other voltages,  22.5,  45,  and 67.5 as well.  I *thi
RJT>I saw mention of a 135V battery once.

RJT>I'm gonna have to do some digging,  see what info I can come up with.

 I nmy digging I fould that ALL of those voltages are Stil lavaiable. As
 well as a 500 VDC battery that is used in some Professional Photo
 Strobe units designed for rappid firing.
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 þ SLMR 2.1a þ This note from El Cajon California USA