Hyperloop's first test in a vacuum tube only reached 70mph, but the company is hailing it as a breakthrough moment for the future of mass transportation. The private test was carried out on May 12 at ...

There is nothing simple about a good vacuum tube tester. In fact, most tube testers were very complicated to set up for each different type of tube to be tested. Testing a quantity of different tubes ...

There’s still a mystique around vacuum tubes long after they were rendered obsolete by solid state devices, and many continue to experiment with them. They can be bought new, but most of us still come ...