Soft Start Advice

**paulus.v** · 13-01-2015

Originally Posted by Jonathan

For 630VA you'd probably get away with it.

I thought the same but for no apparent reasons I am unable to turn on my router. My 16A main fuse is tripping. After a few attempts I managed to get it on but later on trying again I manage to blow the T4A fuse at the toroid.

The only reasons I could think about are the temperature drop in the workshop (7°C) or some alterations on the mains electricity supply.

**EddyCurrent** · 13-01-2015

Take a look at this;
http://www.ft-transformers.co.uk/wp-...ction-50VA.pdf

**paulus.v** · 13-01-2015

The T4A fuse was just fine, I'll change it with 6.3

I have to check if the MCB is type D. Until now I did not know that there are different types of mcb's based on the instantaneous tripping current.

But my question remains, if I want to implement a soft start will the cheap 10W resistors work?

**Clive S** · 14-01-2015

Originally Posted by paulus.v

But my question remains, if I want to implement a soft start will the cheap 10W resistors work?

Have a read through this :- http://sound.westhost.com/project39.htm there are quite a few posts on this forum regarding " soft start " I have had many in my time

usually after a

.. Clive

**EddyCurrent** · 14-01-2015

Steady now, remember what happened last time http://www.mycncuk.com/threads/8251-...5238#post65238
I'm currently on with that myself but it's black nectar

**Clive S** · 15-01-2015

Originally Posted by EddyCurrent

Steady now, remember what happened last time http://www.mycncuk.com/threads/8251-...5238#post65238
I'm currently on with that myself but it's black nectar

I just can't think what you are on about !! ..Clive