Fluke 407D, built near the end of the 2nd (modern) tube era, designed for bench work with tubes. It has a high voltage side (500v + series 250v) bias supply 0-250v and filament 6/12v. It's absolutely perfect for anything to do with tubes, my favorite power supply and in constant use. I was lucky to find a nearly new version (with manual) that only required minor work to make fully operational.
Thanks! You I'm sure realize what goes into making 50 vids! My Fluke 407D was made sometime after 1964 (I was born in 63, so it's old!). Normally I don't use vintage test gear, but I love the utility of this unit and it is rock solid. Came with wonderful high quality tubes, the 12ax7's are all Mullards! I was very lucky to find a unit that had basically sat in a university (physics Dept) storage room for almost 60 years! And it came with the original manual.
Happy 50th Anniversary! May the Lucky Crane triple your stylus lifetime. Thank you for sharing your testing methods.
Congrats on the 50 videos! Well done. Curious which model fluke power supply are you using?
Fluke 407D, built near the end of the 2nd (modern) tube era, designed for bench work with tubes. It has a high voltage side (500v + series 250v) bias supply 0-250v and filament 6/12v. It's absolutely perfect for anything to do with tubes, my favorite power supply and in constant use. I was lucky to find a nearly new version (with manual) that only required minor work to make fully operational.
@@tubelab194 I've had a few fluke HV supplies but haven't ran across this one, most have been 3K+ KV.
Thanks! You I'm sure realize what goes into making 50 vids! My Fluke 407D was made sometime after 1964 (I was born in 63, so it's old!). Normally I don't use vintage test gear, but I love the utility of this unit and it is rock solid. Came with wonderful high quality tubes, the 12ax7's are all Mullards! I was very lucky to find a unit that had basically sat in a university (physics Dept) storage room for almost 60 years! And it came with the original manual.