What did you buy today? Post your latest purchase!

[AF6LJ]

Well I didn't buy it but I am paying for it with a sore back...
Rescued from the Dumpster....
3KV power supply.....
As posted over on the QRZ Forums....

An acquaintance of Pat's (WA6MHZ) showed up at the Radio Hospital one day while I was there.
We engaged in some RF related conversation, really smart guy, he said the same about me Blush.....
He had this and was going to send it to E-Waste....

Supposedly this is a power supply from a transmitter built by Northern Radio Co.
I picked it up yesterday from the back of Pat's Flex..
I still feel it... That is one heavy sucker...



Yes I will check the bleeders before powering up...
Note the caps which are oil filled... Something is missing......
The socket is control and metering. There is something down in the lower right corner that makes me a bit nervous..... I wonder who's idea that was?

Reasonably nice iron, it is a choke input filter and the choke is in the negative side of the power supply.
You can see the metering circuits in the upper left hand corner.
The bride rectifier is hard to see in this photo but it is there.


Here is the bridge that makes me a little nervous....


Close up of the label on the power transformer.


And finally the south facing end of a north bound power supply...

[SeanB]

You are right Sue, that bridge could do with around 5mm of ceramic thermal pad between it and the heatsink, or a 2mm hard anodised thermal pad, which will ithstand that voltage no problem.

Caps probably are PCB filled though, so do not drool too much on them.

[tautech]

Note the caps which are oil filled...

Maybe not. PCB...............

Best you do some homework on those.

[AF6LJ]

I plan on pulling one and seeing if the numbers are behind the brackets.
I'll pull out the bridge and see what value they are if there are no numbers on the caps...
While I am at it I'll check the choke also.
I am not too thrilled with the AGC type fuse in the HV DC out...
If that fuse lets go it can explode from the high temperature arc.

[Cubdriver]

That does look like a mighty heavy beast!!  I was wondering where the rectifiers were at first, too, til the later photo.  Is that a 7109 date code I see on the bridge?  It does look awfully small.   

And if the caps have PCBs, it'll still be ok to drool on them - just don't lick 'em!

-Pat

[AF6LJ]

That does look like a mighty heavy beast!!  I was wondering where the rectifiers were at first, too, til the later photo.  Is that a 7109 date code I see on the bridge?  It does look awfully small.   

And if the caps have PCBs, it'll still be ok to drool on them - just don't lick 'em!

-Pat

I think that is the date code on the bridge. that makes it somewhere around the first few days in March.

As for PCBs As I remember they were banned in the us in 1972.
The caps would be okay as long as they are not sweating, and as long as any of the escaped oil was not heated. When PCBs become vapors they are especially dangerous, as bad as drinking them.

[jonovid]

Chinese nuts and bolts, some will say im nuts  - but this lot made it thru the postage system. 

[SeanB]

Chinese brass, may be plated steel though, as often I find they do stick to magnets.

[Kjelt]

Nostalgia in a box

Is that Pong? I thought they were round like this
https://www.digitalgamemuseum.org/collection/items/show/936

[AF6LJ]

Cool thanks 

[NottheDan]

Nostalgia in a box

Is that Pong? I thought they were round like this
https://www.digitalgamemuseum.org/collection/items/show/936

Don't think it is Pong. Might be Space Invaders or a reconfigurable one.

[NivagSwerdna]

Nostalgia in a box

Is that Pong? I thought they were round like this
https://www.digitalgamemuseum.org/collection/items/show/936

It's currently Hunchback from circa 1983.  The controls need some work and the general condition is a bit poor and rusty but it does appear to function.  It's a Z80 motherboard.

[rdl]

I don't think the table style video games were all that common, at least not in the area I lived. I only remember playing on one. It was sometime in the mid 80s and I don't recall the name of the club, but I'm certain it was some kind of tank vs tank game played from a top down view.

[mmagin]

Not today, but I wanted to introduce my Dad to the wonderful world of Metcal/Thermaltronics so I got him some tips/handpiece/stand new and bought a couple old Metcal RFG-30 used (one as a backup for the one I already use myself) on eBay, since that part doesn't seem to get worn out at the same rate as the handpieces.  So far I've recapped the electrolytics in one (the ESR didn't seem that great, one was bulging too), and replaced the incandescent pilot light which is always dead with a resistor + orange LED.

As for the one I bought for myself, I think I am going to find one of the slow-fading rainbow LEDs I have around to use as the pilot light.

[NivagSwerdna]

While some prefer old arcade machines, I prefer some newer systems, in this case, I got a Nintendo Switch today.

I'm tempted to do the same... just for Zelda.    I prefer new too.  it was just a moment of madness.

[McBryce]

While some prefer old arcade machines, I prefer some newer systems, in this case, I got a Nintendo Switch today.

I'm tempted to do the same... just for Zelda.    I prefer new too.  it was just a moment of madness.

It's screaming to be converted into a MAME cabinet with LCD screen. Or maybe even a Neo Geo MVS?

McBryce.

[razberik]

What did you buy today? Post your latest purchase!

A car !  My first one.

[GreyWoolfe]

Congratulations on your first car!    Working on getting a second vehicle again, being a 1 car family is a pain.  I am working on buying my company cargo van, looks just like a regular mini van.  Hopefully, the deal will happen within the next 30 days.

[McBryce]

What did you buy today? Post your latest purchase!

A car !  My first one.

Congratulations. It's been a while for me, but your first car is always something special.

McBryce.

[AF6LJ]

That's very Cool Congratulations on the car.

[P90]

What did you buy today? Post your latest purchase!

A car !  My first one.

Cool!
All I got was a couple flux pens and a roll of solder... 

[bitseeker]

Solder here as well.

[Richard Crowley]

A HyperDeck Studio Mini from Blackmagic Design in Melbourne. 



Records 6G-SDI 2160p30 digital video onto UHS-II SD cards...

[mmagin]

Blackmagic

Records 6G-SDI 2160p30 digital video onto UHS-II SD cards...

That is magic!  My experiences with SD cards would have never made me imagine that being possible.

[onesixright]

A HyperDeck Studio Mini from Blackmagic Design in Melbourne. 

Sorry, I guess a stupid question but do you use this business-wise? Looks cool, but I have not a clue what you would use it for