Soft Start Collection

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Well, our forum is have many thread say about soft start circuits.
I have plan building a kit, for 1500VA toriod transformer anfd 80.000 micro Farad filter caps.
The store of our forum is selling Soft Start & Speaker Turn-On Delay and DC Protector Boards (Set of 2 boards) - Power Supplies and Accessories - PCBs.
They look very good and simple. But this kit can be used for 1500VA transformer? I don't see in build guide said about this.
And can i replace R15 ~ R18 (180R/5W) by NTC thermistor (like CL60)?
How to calculate the value of resistors?

And you, what're you using? Please post them to here. And we have a collection soft start circuit, this would be easy for someone to consult.

Thanks!
Best regard.
 
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