How to Make a Softstarter

In this small project we will be having a closer look at appliances that require a softstarter in order to properly work with a limited output current system. The shown appliances in this project include an inverter, a boost converter, a power supply and a motor. We will find out why a big inrush current requires a softstarter and how we can build a simple circuit that can do this job. Let's get started!

Step 1: Watch the Video!

The video gives you all the information you need to create your own softstarter. During the next steps though I will present you some additional information.

Step 2: Order Your Components!

Here you can find a parts list with example seller (affiliate links):

Aliexpress:

1x 12V Relay: https://s.click.aliexpress.com/e/_dXD9RFD

1x Power Resistor: https://s.click.aliexpress.com/e/_dYcUD15

1x 1N4002 Diode: https://s.click.aliexpress.com/e/_d7kxFwJ

1x IRFZ44N MOSFET: https://s.click.aliexpress.com/e/_dZR4bLh

1x 10µF Capacitor: https://s.click.aliexpress.com/e/_Bf6I4EJN

2x 100k Resistor: https://s.click.aliexpress.com/e/_dWqBQrV

Ebay:

1x 12V Relay: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Power Resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 1N4002 Diode: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x IRFZ44N MOSFET: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 10µF Capacitor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

2x 100k Resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

1x 12V Relay: https://amzn.to/2Yq6UWs

1x Power Resistor: https://amzn.to/2YG6AlO

1x 1N4002 Diode: https://amzn.to/2Yq7pQk

1x IRFZ44N MOSFET: https://amzn.to/2GYPCFh

1x 10µF Capacitor: https://amzn.to/2GJajoc

2x 100k Resistor: https://amzn.to/2YJXhkG

Step 3: Build the Circuit!

Here you can find the schematic and pictures of my finished board. Use them as a reference while creating your own softstarter.

Step 4: Success!

You did it! You just created your own softstarter!
Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab
https://www.facebook.com/greatscottlab