What did you buy today? Post your latest purchase!

[mehdi]

An old straight-key Morse (German, un-used, very good condition)
http://imgur.com/a/0BHGt

A military headset made by Larimart (for chopper pilots)
http://imgur.com/a/V5VdY

[PartialDischarge]

I am now working on power over fiber based on multi-junction silicon PV cells (the wide band gap InGaAs/GaAs/Ge rubbish won't work).
Luckily I saved up for enough money to buy a fusion splicer, and I have access to a clean room (crude fab with silicon/SiC/GaN/GaAs capability).
After this power over fiber project I will probably move to fiber medium lasers, focusing on short wavelength, for direct power device firing.

Is this related to your power inverter project? That would be very cool.

No. It makes no sense to use fiber to drive a 600V device. It starts to making sense when the bus voltage goes beyond 10kV.
I'm now working on a 6.5kV SiC module, then it will be extrapolated to 10kV. We also have groups working on 12.47kV distribution level solid state xfmrs.
Since I am going to patent this, no more technical details will be revealed here.
I didn't continue the inverter project since it takes my time, and it does not contribute any new knowledge to the society.

sorry to contradict you here. Fiber optics do make sense below 10kV.  Fiber optics are used for example from 3.3kV and upwards in motor starters to fire the thyristors to isolate the HV from the control. Even in a 690V module with IGBTs it would make sense to use fiber optics if those modules were to be cascaded on top of each other, for example in  a CHB architecture to handle several kV.
6.5kV SiC modules are expensive and not every manufacturer offers them, whereas 1700V igbts....

[FuzzyOnion]

Not really electronic in nature - but it is an instrument.

A Cobb & Co barometer.

http://cobbco.co/cobb-co-round-barometer-walnut.html

I'm sure there are plenty of digital versions that are more accurate, but sometimes aesthetics win the day.

[VK5RC]

A Gossen MetraHit Energy arrived today after a slow carrier pigeon delivered it!

[HighVoltage]

Not really electronic in nature - but it is an instrument.

A Cobb & Co barometer.

http://cobbco.co/cobb-co-round-barometer-walnut.html

I'm sure there are plenty of digital versions that are more accurate, but sometimes aesthetics win the day.

What a nice looking barometer

What is so special about it?
Probably hand built and all mechanical and very precise

[System Error Message]

Can i say something unethical like purchasing a person for example ?

[Kilrah]

If you really did, no problem

[canibalimao]

Can i say something unethical like purchasing a person for example ?

Only if that purchase means you're getting married in a near future 





This is so bad humor!

[PartialDischarge]

Audio spectrum analyzer 5Hz-50khZ HP 3580A

[McBryce]

Can i say something unethical like purchasing a person for example ?

Only if that purchase means you're getting married in a near future 

This is so bad humor!

Then he was the seller (of his freedom), not the buyer

McBryce.

[bollio]

Picked this up today for a whopping $10.  Was just going to use it for the chassis, but having a look on eBay, used ones go for WAY more than I was expecting.  Might have to post it as-is/for parts and see what kind of price it get!

[bollio]

So evidently this thing puts out up to 200kV and 10mA... up to 900w.  Maybe I'll just use it as a lab power supply and I can fry my projects even faster than normal!

[PartialDischarge]

So evidently this thing puts out up to 200kV and 10mA... up to 900w.  Maybe I'll just use it as a lab power supply and I can fry my projects even faster than normal!

x ray generators, by design, don't supply continuous power, just during the exposure time which is usually less than a second. 'mAs' is the time by current parameter, important in radiography.
Usually you have to "prepare" the exposure which charges some capacitors, and then that hv pulse is generated within the selected parameters.
Also, if you want the system to generate this voltage you'll probably have to fake a current, the filament current, which is a wound coil found inside the tube.
Lastly, dont open the HV tank, as it either will contain nasty oil or nastier Sulfur hexafluoride.

[bollio]

So evidently this thing puts out up to 200kV and 10mA... up to 900w.  Maybe I'll just use it as a lab power supply and I can fry my projects even faster than normal!

x ray generators, by design, don't supply continuous power, just during the exposure time which is usually less than a second. 'mAs' is the time by current parameter, important in radiography.
Usually you have to "prepare" the exposure which charges some capacitors, and then that hv pulse is generated within the selected parameters.

Was a bit of a joke, but the manual for this thing does state it's capable of exposures adjustable from 1 second to 99min and 59 seconds in 1 second increments... Again really have no experience in this type of gear, but certainly seems like a legit amount of power... Lol

[PartialDischarge]

So evidently this thing puts out up to 200kV and 10mA... up to 900w.  Maybe I'll just use it as a lab power supply and I can fry my projects even faster than normal!

x ray generators, by design, don't supply continuous power, just during the exposure time which is usually less than a second. 'mAs' is the time by current parameter, important in radiography.
Usually you have to "prepare" the exposure which charges some capacitors, and then that hv pulse is generated within the selected parameters.

Was a bit of a joke, but the manual for this thing does state it's capable of exposures adjustable from 1 second to 99min and 59 seconds in 1 second increments... Again really have no experience in this type of gear, but certainly seems like a legit amount of power... Lol

oh, right, then it's not a medical x ray system but for inspection purposes... then it should be ok as long as you can trick the system with no tube into believing there is one 

[wkb]

Can i say something unethical like purchasing a person for example ?

Only if that purchase means you're getting married in a near future 

This is so bad humor!

Mind you, there is a "no returns/no refunds" policy for this kind of purchase.  Or, looking at it from a different angle, the policy is that you loose 50% of your assets if you try to return your purchase 

[bitseeker]

Yeah, 50% restocking fee.

[System Error Message]

its just a joke lol, thought i would break the norm atmosphere. It wasnt really specified if it had to be ethical, lawful or electronics related lol.

You could always say "i purchased some uranium from amazon"

[bitseeker]

You could always say "i purchased some uranium from amazon"

Now that would be something.

[Cubdriver]

Snared an HP 4274A LCR meter that's throwing an error code from the 'bay.  It'll cost more to ship it than I paid for the instrument, but for about $120 total I figure it's worth a roll of the dice.   

-Pat

[System Error Message]

You could always say "i purchased some uranium from amazon"

Now that would be something.

You can actually buy uranium and other radioactive materials from amazon. They are often used in calibrating test and measuring equipment. Ofcourse theres nothing stopping you from buying in bulk through secret and distributed means.

[rrinker]

 Just don't try to obtain plutonium from Libyans.

[Kilrah]

TE-Q1+

[Falkra]

I bought two of these isolation transformers (120 euros shipping included).
They are like new, and came with certificates in original box/packaging.

[SteveyG]

I bought two of these isolation transformers (120 euros shipping included).
They are like new, and came with certificates in original box/packaging.

Nice. Very similar to one I modified on my YT channel a few years ago.