[M Caldeira] necessary to take a look at a tube and did not have a spare to do the outdated swap check. He also did not have a tube tester helpful. Drawing inspiration from a 2015 video, he managed to cobble up an advertisement hoc tube tester employing things all-around the workbench. You can see a video clip of the course of action down below.
To copy his effort and hard work, you are going to need a number of meters. Excellent thing they are somewhat low cost these days. Usually, a tube tester has a way to regulate all the various parameters for the tube, but there is no rationale you can not just set those people parameters working with your testbench ability supplies.
Of course, that’s going to require substantial voltage electrical power provides. You will not be in a position to use a USB port to electricity most tubes. A simple take a look at board offers the proper bias and hassle-free ways to link the power materials. A person provide powers the heater, even though other electrical power provides travel the other voltages. A small DC to DC converter offers the higher voltage B+ line from 12V input.
Looking at the tube in operation is unquestionably one way to test it. The times when tube testers have been everywhere are extended absent. But you can continue to discover some exciting types on the utilized market if you really have to have to examination a great deal of tubes. If you are really inspired, you can even make your personal tubes.