>
>Marv says:
>
>>No need. Avalanche diodes are "self-protecting" against the effects
>>that required those parts.
>
>I would still recommend a fairly large MOV across the primary of the
>transformer to snub the worst spikes on the mains, but parallel resistors
>aren't needed.
>
With a capacitor DC filter, the worst spikes on the mains simply get
rectified and stored in the capacitor. With a choke filter, a MOV makes
more sense.
cheers
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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