Posts tagged ‘Dummy Load’

Array 3711A Electronic Load Testing – Tips and Pitfalls

In my previous post, I did a teardown of my Array 3711A DC electronic load. And as I promised, this time I did some testing with it and also discussed some tips and pitfalls. Continue reading ‘Array 3711A Electronic Load Testing – Tips and Pitfalls’ »

Teardown of an Array 3711A 300W DC Electronic Load

I have made many electronic loads in the past. For instance this simple harddrive cooler housed small dummy load, this more sophisticated constant current/constant programmable load and this heavy-duty electronic load that is capable of sinking over 1kW under peak load. In this blog post though, I am going to take a look inside an Array 3711A DC electronic load I recently purchased on eBay. You can find a video of this teardown towards the end of the post. Continue reading ‘Teardown of an Array 3711A 300W DC Electronic Load’ »

A 400W (1kW Peak) 100A Electronic Load Using Linear MOSFETs

I bought a couple of IXYS linear MOSFETs (IXTK90N25L2) a while ago to test their capabilities when used as electronic load, and the result was quite impressive. So I decided to build another electronic load using both MOSFETs. As you can see in the video towards the end, this electronic load can sink more than 100 Amps of current while dissipating more than 400W continuously and can withstand more than 1kW of power dissipation in pulsed operation mode. Continue reading ‘A 400W (1kW Peak) 100A Electronic Load Using Linear MOSFETs’ »

Building a Constant Current/Constant Power Electronic Load

A while back I built a simple constant current electronic load using an aluminum HDD cooler case as the heatsink. While it was sufficient for a few amps’ load under low voltages, it could not handle load much higher than a few dozen watts at least not for a prolonged period of time. So this time around, I decided to build a much beefier electronic load so it could be used in more demanding situations. Continue reading ‘Building a Constant Current/Constant Power Electronic Load’ »

Constant Current Dummy Load In an HDD Cooler

Basic constant current dummy load using an Op Amp and a by-passing MOSFET is very easy to build and had been made quite popular following Dave’s video on EEVBlog. I happened to have an old aluminum hard disk cooler case collecting dust. The die-cast aluminum case is relatively thick, making it an excellent heat sink. So I thought why not use it to build a dummy load myself? Continue reading ‘Constant Current Dummy Load In an HDD Cooler’ »