DIY Constant Current Load

In this small project I will show you how to make a simple adjustable constant current load. Such a gadget is useful if you want to measure the capacity of chinese Li-Ion batteries. Or you can test how stable your power supply is with a certain load. Let's get started !

The video gives you all the information you need to build a constant current load. But I will present you some extra help in the following steps

Here is the small list of parts that you will need (affiliate links):

Ebay:

1x Vero board: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 1Ω / 5W resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x LM358: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

2x PCB terminals: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x IRLZ44N N-channel MOSFET: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 500k potentiometer: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Aliexpress:

1x Vero board: https://s.click.aliexpress.com/e/_dVyKGn9

1x 1Ω / 5W resistor: https://s.click.aliexpress.com/e/_dYdV8ib

1x LM358: https://s.click.aliexpress.com/e/_dWVhDDz

2x PCB terminals: https://s.click.aliexpress.com/e/_dYbstfZ

1x IRLZ44N N-channel MOSFET: https://s.click.aliexpress.com/e/_dWhSrDl

1x 500k potentiometer: https://s.click.aliexpress.com/e/_dX83GAF

Amazon.de:

1x Vero board: http://amzn.to/1yZ4k1J

1x 1Ω / 5W resistor:http://amzn.to/1yZ4u9x

1x LM358: http://amzn.to/1GtRhNH

2x PCB terminals:http://amzn.to/1GtRU9R

1x IRLZ44N N-channel MOSFET: -

1x 500k potentiometer: http://amzn.to/1yZ4Vkb

Here you can find the schematic for the build and the board design that I created. Make sure to interrupt the copper traces underneath the LM358.

Now you should be able to build your own constant current load.
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