On 1/31/06, Crist=F3v=E3o Dalla Costa <cdallacosta@gmail.com> wrote:
>
> The power supply consists of a transformer, full wave rectifier with 1000=
uF
> electrolytic, a 7805, another 1000uF electrolytic with a 100n disc cap, a=
nd
> every digital chip has its own 100n disc cap. Board current comsumption is
> in the 400mA range. Would a series inductor help with the problem? What e=
lse
> can I do to make my project surge-proof?

Do you have normal protection device like Varistor (over voltage protection)
and fuse (over current protection) in front of the circuits?

Proper layout is also important with this kind of setup. Do you have proper
creepage and clearance between the high voltage side and low voltage side?
Do you have proper isolation between them?

Regards,
Xiaofan

-- =

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