Archive for January 2018

The Traveling Wave Tube inside HP 493A is Radioactive

In my previous video featured on EEVBlog I did a teardown of an HP 493A microwave amplifier along with the traveling wave tube inside. I actually had done a teardown of an identical unit a while ago but this time I managed to take a peek at the traveling wave tube inside. Continue reading ‘The Traveling Wave Tube inside HP 493A is Radioactive’ »

Featured on EEVBlog – HP493A Teardown

Big thanks to Dave Jones at the EEVBlog for featuring one of my teardown videos. His generosity would certainly help smaller channels like mine attracting more viewers. Continue reading ‘Featured on EEVBlog – HP493A Teardown’ »

Amrel PPS-2322 Programmable Power Supply Firmware Backup

Quite a few people had contacted me on the availability of the firmware for the Amrel PPS-2322 programmable power supply I did a teardown with a few years ago. I finally got a chance to it and backed it up with my TL866A, better late than never. For those who wanted to download a copy of the firmware, you can find the link towards the end of this post. Continue reading ‘Amrel PPS-2322 Programmable Power Supply Firmware Backup’ »

Inside a PM1A Color Analyzer

As I mentioned in one of my posts a few years back, a color analyzer from the 80’s can be a treasure trove for the hobbyists. And at the very least, it is a cheap way to get yourself a photomultiplier along with the supporting circuitry to do experiments with. For instance, you can utilize the fast response time of a PMT to do accurate speed of light measurement in a lab setting like I showed in this experiment back in 2015. Continue reading ‘Inside a PM1A Color Analyzer’ »