Archive for January 2017

HP 5350B Backlight Upgrade

I got myself an HP 5350B microwave counter a couple of years ago and did a teardown of it. The backlight on the LCD is pretty weak and does not provide much contrast however. So I thought I would upgrade the backlight with a few white LEDs and see if I can make the display easier to read. Continue reading ‘HP 5350B Backlight Upgrade’ »

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’ »