The reason I left off the electrolytic capacitor is space.  I have=20
provision on this board for it, but will need that space back later, if=20
I can get away without it.  I will make space for some at this point though=
..

Cheers,
-Neil.

On 10/27/2014 12:44 AM, RussellMc wrote:
> On 27 October 2014 13:17, Neil <picdude3@narwani.org> wrote:
>
>> My power supply is fairly basic --  reverse protection diode, small
>> resistor, 8V regulator, then 5V regulator.  0.1uf caps on the input and
>> output of the regulators.  Total current draw is 60mA.
>>
> IF you genuinely have no larger capacitors anywhere in the system then th=
e
> holdup time for a full Vin dropout
>
> approximates zero quite well indeed - work it out.
>
> If you really have no electrolytics or similar anywhere on Vin then that'=
s
> almost certainly enough reason to have a problem like this. then
>
>
>         R

--=20
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