When I was 14, I had to make a power supply for a Heath HW-32A. Mine ended up working, but it was nowhere near as nice as Mr. Carlson's BC-348 supply (shown in the video above). I didn't have a sand blaster, nor a drill press, nor much of anything else, really.
But hey, don't real boatanchor hams use Greenlee chassis punches? What's with the drill press and the hole saws?
Note that Mr. C takes care to make sure that the rectifier tube is in the proper angle FOR OPTIMAL VIEWING. That's some serious attention to detail OM. And whoa, DELICATE SURFACE MASKING TAPE from 3M? Respect! Also, era-specific looming material.
His point about the importance of the cardboard washers in the power transformer was really useful. I hadn't thought about that.
Here are the two previous BC-348 videos:
Thanks Paul!
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In my day we called them
ReplyDeletevacuum tubes. And at 70 I still do. Thermatron sounds like a woke interpetation of the same.
"O, be some other name!
DeleteWhat's in a name? That which we call a rose
[b]y any other name would smell as sweet." (Romeo and Juliet, Act 2, Scene 2)
And at 70 you are still living in the past Mr. anonymous woke! Get with the program! Thermatrons has been the accepted term since...well...since...I renamed them! Didn't you get the memo?
ReplyDeleteThank you Grayson. You beat me to it. Of course before they were called any of those things they were called Fleming Valves, and then Lee Deforest came around and called them Audions. And if you are in the UK, they are still called valves today. But hey if you want to use that newfangled term "vacuum tube" for an audion valve, that's fine with me.
ReplyDelete