Snubber caps across standby and power switch

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Joost
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Snubber caps across standby and power switch

Post by Joost »

I put 0,01 uF 1000V snubber caps across the power and standby switch to minimize arching on power up. Any adverse effects to doing that?
I assume I'll see a small trickle of leakage on first power up with a bulb limiter right?
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Bierschinken
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Re: Snubber caps across standby and power switch

Post by Bierschinken »

Dag!

There is no need for a cap on the mains-switch.
If you use it though, it has to be a special one specified for use direct on wall-voltage. (In Germany those are called X2-Type capacitors).

Cheers,
Swen
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David Root
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Re: Snubber caps across standby and power switch

Post by David Root »

Same on this side of the pond. X-type mandatory. On the AC switch I have sometimes used inrush current limiters. This is especially a good idea with toroidal power transformers.
Cliff Schecht
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Re: Snubber caps across standby and power switch

Post by Cliff Schecht »

David Root wrote:Same on this side of the pond. X-type mandatory. On the AC switch I have sometimes used inrush current limiters. This is especially a good idea with toroidal power transformers.
Why is that so for toroidals? I've never heard that before.
Cliff Schecht - Circuit P.I.
d95err
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Re: Snubber caps across standby and power switch

Post by d95err »

Cliff Schecht wrote: Why is that so for toroidals? I've never heard that before.
From Wikipedia: Because of the lack of a residual gap in the magnetic path, toroidal transformers also tend to exhibit higher inrush current, compared to laminated E-I types.
http://en.wikipedia.org/wiki/Transformer#Cores
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