My dad loved the Pedoscope. He kept sticking his foot in it too many times for amusement and would up with a touch of cancer on the foot later in life.
Yes, UK is still harmonized with the EU, nominal line voltage is 230V and 50Hz. Note that the UK was never 220V, but was 240V - 250V.
The picture was possibly an export unit for sale in the U.S. or Canada.
I have heard from friends in Ire, and the UK that 120V hand tools were somewhat common before lithium ion power tools were a thing on construction sites, something about the lower operating voltages being safer - used I guess with isolation or auto-transformers. (not sure)
Interesting. I read Loewy's autobiography years ago and seem to have (in my mind) attributed the Honeywell thermostat to him. It was indeed designed by Dreyfuss
Yes, all appliances used by builders were fitted with universal 3 pin plugs, were designed for 110V, and were used with one of these, which was ubiquitous on building sites until quite recently, I suppose.
Just to keep it weird, that plastic box would not be in code on an American construction site. I guess everybody has their own red lines in the sands of safety. Stuff done in our twenties is terrifying in our seventies, or as Joe Walsh said "It was a lot more fun being 20 in the 70s than being 70 in the 20s".
All good fortune,
Chris
All good fortune,
Chris
Demonkleaner,
Perhaps after the original owner was done using that machine, he might have sold it to Hollywood.
Sure looks like something for a space movie, or a science fiction movie. Wooie, Wooie, Click, Snap!
Then from Hollywood to a surplus sale.
Just dreaming/guessing.
Perhaps after the original owner was done using that machine, he might have sold it to Hollywood.
Sure looks like something for a space movie, or a science fiction movie. Wooie, Wooie, Click, Snap!
Then from Hollywood to a surplus sale.
Just dreaming/guessing.
It operated using an 812 transmitting tube oscillating at 1000 HZ. The loads are piezo pads? It was for pain relief.
The power supply had 2 5U4GB's in a voltage doubler configuration. Very weird setup.
The power supply had 2 5U4GB's in a voltage doubler configuration. Very weird setup.
Except for the 1000Hz operating frequency it could be a diathermy machine (could it be 1000KHz?).
The Klipsch Museum has a diathermy machine which uses a pair of United Electronics type 311s, probably running on raw AC, but missing its contact pads. Paul's goal was to test it for its ability to dry glue faster, or so the story goes. Didn't work out, in part because it blanked out every radio and television in town, again, as the story goes.
Don't try this at home, kids!
Chris
The Klipsch Museum has a diathermy machine which uses a pair of United Electronics type 311s, probably running on raw AC, but missing its contact pads. Paul's goal was to test it for its ability to dry glue faster, or so the story goes. Didn't work out, in part because it blanked out every radio and television in town, again, as the story goes.
Don't try this at home, kids!
Chris
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What is it with emotion and anxiety politics these days?
Let's create silly rules that have extremely little significance with very poor objective background.
Used to live and work down under for a while. Knowing what other very silly specific rules there are, it doesn't surprise me.
Although I could never get used to all these different silly rules. Most of them don't make any sense at all and seemed to be just based on emotion.
I would keep the tubes, the vast majority of people don't even know what they look like. It has absolutely extremely little significance in doing any harm as long as you handle them well. Especially the very small quantities and cases that are barely available these days.
Makes you wonder how this works for museums? Or are we just erasing history?
Let's create silly rules that have extremely little significance with very poor objective background.
Used to live and work down under for a while. Knowing what other very silly specific rules there are, it doesn't surprise me.
Although I could never get used to all these different silly rules. Most of them don't make any sense at all and seemed to be just based on emotion.
I would keep the tubes, the vast majority of people don't even know what they look like. It has absolutely extremely little significance in doing any harm as long as you handle them well. Especially the very small quantities and cases that are barely available these days.
Makes you wonder how this works for museums? Or are we just erasing history?
I have all the documentation. I’ll recheck the oscillator frequency. It also had a low voltage supply with a 1619 metal tube doing some kind of duty in there. I have a bunch of the vintage “gel” for the pads free to a good home 😬
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My last oddity was a dumpster retrieval. Was originally part of an electrostatic air filtration system in a very large air handler. Had not been powered up in many years. I have no practical use for it. It scares me just walking by it on the bench. Weighs around 120 lbs just guessing. I may be able to use some of the bits for RF work maybe.
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