Re: gEDA-user: Dropping a few volts

[Bob Paddock <bob.paddock@xxxxxxxxx>]

> Oh, now there's an important tip.  I hadn't thought about the startup
> voltages.  Can I get away with putting a low-value resistor in front
> of the input capacitor, which would limit inrush current and cause Vin
> to ramp up slowly when power is connected?  That might be cheaper and
> smaller than the zener.  Plus, even zeners have a non-zero response
> time -- might the regulator be damaged during those microseconds?
> (nanoseconds?)

http://www.national.com/an/LB/LB-47.pdf

I used Zetex Transistors, and TI783, after several meltdowns
of LM317HV and 2Nxxxx parts.

LB-47 has some warnings, such as what happens during a
output short to ground, of a floating regulator.


-- 
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