On Tue, 29 Oct 2002, Jim wrote:

*>What are 317's rated for (Max V wise) these days?

36V I think. There are schemes to run them higher (zener in series). The
datasheet contains application diagrams afair.

*>Are there any conditions during startup (power-up)
*>of the supply where you have the possibility of
*>a damaging condition?

You can't damage a 317 easily it has SOA and current limiting. Maybe a 337
would be better (TO3). I think that the unloaded input is 40V for 28V out
regulated.

Peter

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