Soft Start Inrush Current Limiter- PCB design

[the great waldo]

Hi Muzzer
Any chance of a quick schematic for timer relay and a metal clad resistor wiring ?
Thanks in advance.
Cheers
Andrew

[TStar]

Hi Muzzer
Any chance of a quick schematic for timer relay and a metal clad resistor wiring ?
Thanks in advance.
Cheers
Andrew

I'm not Muzzer but as I understand it, just wire the resistor across the terminals of the timer on the input side ie in parallel. When the timer relay is open the current flows through the resistor, expending inrush current as heat. Then after a short period the timer relay closes, the current will choose the path of least resistance and flow through your main circuit instead. Just have to make sure your resistor is appropriately sized.

It's actually the same thing as my module just using commercial units.