What did you buy today? Post your latest purchase!

[BravoV]

Or just for current carrying capacity - 1milliohm at 50 W = 223A

As I don't have any plan on it yet, series with car's battery, wonder if this is enough say coupled with scope at the sense wires to capture car's engine motor start up current ?

[grumpydoc]

New media/NAS server - still a couple of items to go but enough to get started



Minor compromise on some items given availability/price, we'll see how it goes.

[grumpydoc]

New media/NAS server - still a couple of items to go but enough to get started

An 8700k NAS???

I know, I was thinking it might be a bit underpowered as well, do you think I should have stuck with the i9 7980XE?

[grumpydoc]

I guess so, maybe adding in a Titan V and populate all RAM slots. A few Intel 900P for storing movies and a 40Gbps QSFP+ NIC are absolutely necessary.

That would be quite some system.

Being slightly more sensible I covered some of the rationale in my post bemoaning the lack of great choice in 8-bay NAS cases in the market at present. The reason for the system upgrade is I'm running ot of disk space on the existing box. The reason for the overkill CPU (for a NAS) is that I'm trying to consolidate boxes so it will be my go-to PC as well as running a media server, holding the DVD and Blu-ray collection (still have more than 70% to go and the existing box is filling fast), transcoding to h.265, some video editing and hosting email/imap.

I got the "K" because I'll probably want/need to undervolt it if possible - at least initially. Air cooling is always going to be compromised in this case - liquid cooling might just be possible but it will be very tight and I'm got going there in the first instance.

I know it's not exactly best practice to use a server as a production PC but I've had a server/work PC split for the past 5 years and it hasn't turned out to work all that well. Most of the time if I want to quickly check a web page I'll just turn the monitor on and flick the KVM to the server as it's faster than booting the "big" PC, even given the fact that it has an SSD. Also it's running out of disk as well and I figured it was better to kill two birds with one stone.

Fortunately I don't play PC games so the one thing I don't need to try to squeeze in is that Titan V

[tautech]

Or just for current carrying capacity - 1milliohm at 50 W = 223A

As I don't have any plan on it yet, series with car's battery, wonder if this is enough say coupled with scope at the sense wires to capture car's engine motor start up current ?

Yeah they should easy do that with ~200% overload for a short duration. I wouldn't trust that they'll meet original tempco specs later though without some checks.

[BravoV]

Or just for current carrying capacity - 1milliohm at 50 W = 223A

As I don't have any plan on it yet, series with car's battery, wonder if this is enough say coupled with scope at the sense wires to capture car's engine motor start up current ?

Yeah they should easy do that with ~200% overload for a short duration. I wouldn't trust that they'll meet original tempco specs later though without some checks.

Thanks, as I expected, since as datasheet stated its capable of maintaining the +/- 0.1% tolerance up to twice the watt rating, and up to 5 seconds. Also up to 150C for 2 hours at the same tolerance.

5 seconds is more than what I need, as I just want to take a scope single shot during the motor cranking up and starts the engine, that should be way under 5 seconds right ? Did I miss anything ?

[tautech]

Or just for current carrying capacity - 1milliohm at 50 W = 223A

As I don't have any plan on it yet, series with car's battery, wonder if this is enough say coupled with scope at the sense wires to capture car's engine motor start up current ?

Yeah they should easy do that with ~100% overload for a short duration. I wouldn't trust that they'll meet original tempco specs later though without some checks.

Thanks, as I expected, since as datasheet stated its capable of maintaining the +/- 0.1% tolerance up to twice the watt rating, and up to 5 seconds. Also up to 150C for 2 hours at the same tolerance.

5 seconds is more than what I need, as I just want to take a scope single shot during the motor cranking up and starts the engine, that should be way under 5 seconds right ? Did I miss anything ?

That's a pretty good spec IMO.
Don't know what I was thinking and changed previous comment down to 100% (double the rating).

If it not a diesel that have a higher draw you should be good to go.
Looking forward to the scope screenshots !

[BravoV]

That's a pretty good spec IMO.
Don't know what I was thinking and changed previous comment down to 100% (double the rating).

Yep, one of the reason I grabbed bunch of them realizing these are pretty good resistors, not just crude big ass dummy load ones.

If it not a diesel that have a higher draw you should be good to go.
Looking forward to the scope screenshots !

Its gasoline, interested to see the 1st few seconds of the current surge and voltage dropped.

Will do, once I figured out how to attached this bad boy securely and has a good connection to the battery's terminal.

[rdl]

That seems like massive overkill for a home NAS. I guess maybe if you also use it for other things it makes sense.

Nice looking case. 

New media/NAS server - still a couple of items to go but enough to get started



Minor compromise on some items given availability/price, we'll see how it goes.

[hugo]

Or just for current carrying capacity - 1milliohm at 50 W = 223A

As I don't have any plan on it yet, series with car's battery, wonder if this is enough say coupled with scope at the sense wires to capture car's engine motor start up current ?

Just use a clamp meter, it's easier ...

[URI]

This Hermes story is becoming strange..

My wife and I were having lunch when the door bell rang.
I walked to the door immediately and found a big cardbox package right on our door step. Our flat is on the ground floor, so I can check the door of the house easily: there was nobody at all, the door was closed. The person who put the package there and rang must have been really rushing out of the house. I walked back in and opened a window to look if there was somebody hurrying down the street but again: nobody at all.   

The cardbox package is the missing Hermes package. It seemed untouched and after I opened it I still had this impression: It was nicely packed and it didn't look like beeing inspected be someone else before.   

No surprise, Hermes still hasn't answered my complaint yet.
They told me I could use the email with the complaints ticket notice to reply to them if the package should get to me.   
But I won't do them this favour: I *!Q#X?&!* do want to know to whom the package was delivered originally..!   

After all a happy end:
I now have an Agilent 6063B 0-10A,3-240V 250W DC Electronic Load in nearly mint condition to be used.   

By the way: According to its serial number it's my newest piece of Test Equipment besides my Fluke 85 III, 87 V and other miscellaneous hand held Multimeters.

Here is a pic of the front and back panel to give you an impression:

Only some sticker residue right the LCD that will easily be removed.

It was offered on *bay as "the 120V-Version".
I guess that's why I had not much competition on that auction and won it for 167EUR. 

And it was indeed the 120V version. -But it's easily convertible to 220V/240V by switches inside -what I did.   

With this price and the shipping costs plus customs (~ half of the price) the over all price is quite a bargain for me: I also considered to buy a Maynuo or Itech and their 300W-Versions go for more..

On the other hand, the 6063B is unquestionable solid and reliable.
I tested it using two HP 6643A Power Supplies for giving 240 Watts to it and it blew that power right out of its back vents for over two hours without a moan.   

With its Transient feature I'm now able to do things I wasn't able to test without it. Very handy. 

Happy.  Addiction satisfied once again 

[BravoV]

Or just for current carrying capacity - 1milliohm at 50 W = 223A

As I don't have any plan on it yet, series with car's battery, wonder if this is enough say coupled with scope at the sense wires to capture car's engine motor start up current ?

Just use a clamp meter, it's easier ...

Thanks, do you mean like using my humble clamp meter -> Here ?  Done that years ago.

[bitseeker]

After all a happy end:
I now have an Agilent 6063B 0-10A,3-240V 250W DC Electronic Load in nearly mint condition to be used.   

Glad it finally arrived. It really does look like new.

It was offered on *bay as "the 120V-Version".
I guess that's why I had not much competition on that auction and won it for 167EUR. 

And it was indeed the 120V version. -But it's easily convertible to 220V/240V by switches inside -what I did.   

That's a great deal! I guess lots of people don't read the manual prior to purchase. That's a good thing.

Happy.  Addiction satisfied once again 

 

[Specmaster]

That's a great deal! I guess lots of people don't read the manual prior to purchase. That's a good thing.

Thats the first thing I do, check for a manual and if it can be modified.

[grumpydoc]

That seems like massive overkill for a home NAS. I guess maybe if you also use it for other things it makes sense.

Overkill is fun 

Nice looking case. 

Nice looking, yes.

It's cramped - my fault for liking lots of CPU and disk in a small box, there are no individual hdd activity LEDs which is a pain, the front surface is matt, almost rubbery and it looks like it will be a finger print magnet and not all that robust against scratches, cable management is somewhat non-existent, thermals are going to be "interesting" and it has an odd extra USB connection going up to the front panel - when I looked there is what I suspect is an RGB LED and an empty 8-pin DIP socket which I suppose is intended to contain some sort of interface between the two - I've had a quick look and can't see anything standard so i suspect it needs a microcontroller there.

But I wanted small and it meets that criterion - the other problems mostly flow from that choice so I'm not complaining as such. If I can get everything squeezed in I'll be happy.

[paulca]

A NAS has been on my list for a while.  I have 8 SATA drives in my PC and an external and most of it is not shared.  The plan is to move to a NAS for everything except OS and Games which will go onto SSDs.

The downside is NASes are either weedy, plagued with nonsense software or really expensive.

Building my own is a nice idea.  I tried a Raspberry PI.  It just can't cut it under heavy interactive load like browsing video thumbnails on a smart tv would just lock it up with 12 fileserver threads hitting it simultaneously..

So I understand the want for some power too   An i7 ... a little overkill though.

[grumpydoc]

A NAS has been on my list for a while.  I have 8 SATA drives in my PC and an external and most of it is not shared.  The plan is to move to a NAS for everything except OS and Games which will go onto SSDs.

The downside is NASes are either weedy, plagued with nonsense software or really expensive.

Building my own is a nice idea.  I tried a Raspberry PI.  It just can't cut it under heavy interactive load like browsing video thumbnails on a smart tv would just lock it up with 12 fileserver threads hitting it simultaneously..

So I understand the want for some power too   An i7 ... a little overkill though.

A Pi is probably a bit underpowered for that - makes a nice enough email server though.

I was only half joking about the i9 - I did actually consider it briefly before deciding that it wasn't going to fly, but there actually are mini-itx X299 chipset motherboards 

I actually quite like the existing set-up - an i7-3770T in a Morex Venus 669 case with the original 5.25" bays filled with an Icy-Dock 3x 3.5" caddy and the original 3.5" bay taking a 2x 2.5" caddy. Works well, not too cramped inside, temperatures absolutely fine. I just can't get more disks into it.

[Inverted18650]

Scooped up a lot of precision resistors from eBay.

https://www.ebay.com/itm/Caddock-High-Performance-Film-Resistors-TF020R-BUNDLE-NEW-OLD-STOCK-/112812652488

I am certain URI outbid me for the 6063  I too was shocked noone else was bidding on the unit so I thought I was going to steal it at $150...nice ctach mate, Im kicking myself!

[Specmaster]

Scooped up a lot of precision resistors from eBay.

https://www.ebay.com/itm/Caddock-High-Performance-Film-Resistors-TF020R-BUNDLE-NEW-OLD-STOCK-/112812652488

I am certain URI outbid me for the 6063  I too was shocked noone else was bidding on the unit so I thought I was going to steal it at $150...nice ctach mate, Im kicking myself!

They are expensive for 1% resistors if you don't me saying so.

[GerryBags]

Bits and bobs to make a dim bulb tester and an LG FG-7002C (putting all the fun back in) function gen for hundred quid were today's purchases. 2 MHz is plenty for me at the moment. I have an old TTi one that will go a little higher but it has no sweep. The LG also has CMOS/TTL output. That's my excuse and I'm sticking to it.

[BravoV]

Scooped up a lot of precision resistors from eBay.

https://www.ebay.com/itm/Caddock-High-Performance-Film-Resistors-TF020R-BUNDLE-NEW-OLD-STOCK-/112812652488

I'm so jealous, nice score. 

[Inverted18650]

Caddock has a line of 0.1 and even 0.01% abs accuracy but they are still just 5ppm and cost at least $20 each, so I think this lot was a good buy. They are getting increasingly harder to find as well.

https://www.digikey.com/products/en/resistors/through-hole-resistors/53?k=caddock&k=&pkeyword=caddock&pv17=108&FV=ffe00035&mnonly=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25

I may just keep two or three of each and relist the rest to recoup some of the investment. I don't really have a plan for them, but wanted a variety for experiments. I am currently rebuilding the Scullcom/Barbouri Millivolt Meter so I will get to play with various dividers and see how they behave.

https://www.barbouri.com/2016/05/26/millivolt-meter/

[nanofrog]

You didn't buy those, you STOLE them.   

That's definitely worthy of a YOU SUCK award. 

[Terry01]

I bought myself a Fluke 289 today. I've wanted 1 for a while now and finally pulled the trigger today! I should get it Monday or Tuesday so looking forward to that! 

It's funny how we talk ourselves into "really" needing these things! Electronics is a very expensive hobby that could very easy get out of hand if your not careful...... 

[BravoV]

I bought myself a Fluke 289 today. I've wanted 1 for a while now and finally pulled the trigger today! I should get it Monday or Tuesday so looking forward to that! 

It's funny how we talk ourselves into "really" needing these things! Electronics is a very expensive hobby that could very easy get out of hand if your not careful...... 

Its called TEA, you will be welcomed there -> TEA Brotherhood Pub.

Everyone there "need" every T&M equipment they could get, not just wanting it.