What did you buy today? Post your latest purchase!

[CatalinaWOW]

I agree that the not calibrated sticker only means that the unit is not on the normal calibration schedule.  I have worked at places where it also means that the only time it will be checked against other instruments is if the readings are so whacky that the person using it can't believe what they are seeing.

So if you are buying, a sticker like this should be interpreted as "probably not terribly wrong".

[Specmaster]

Well now we have cleared that up, keep it under your hat and use it as a bargaining tool like I did 

[Richard Crowley]

I was fully prepared to walk away from the deal if they said no

Yep, that's the best position to be in for negotiations.

When I first read that, I thought it referred to Donald Trump's position on meeting with Kim Jong Un

President Donald Trump says he's "totally prepared to walk away" if his meeting with North Korean leader Kim Jong Un is not productive.
https://www.cnn.com/videos/politics/2018/06/07/trump-maximum-pressure-walk-away-kim-north-korea-nr-bts.cnn

[Mr. Scram]

Yep, that's the best position to be in for negotiations.

I'd say it's not really a negotiation if you're not.

[GerryBags]

I had one of Leo Bodnar's fast-edge pulsers turn up today, very speedy as I only ordered on Friday night! 

Looking forward to testing rise-times... once I've finished fixing my 'scope 

[Calambres]

ON-ON-ON mini switch.
Impossible to find at local stores so I had to web-buy.

[Specmaster]

I get to collect my Fluke 3390B tomorrow so I'll be posting some pics of it later, my first foray into the world of digital scopes apart from a DSO138 which many consider a toy but is really a pretty useful but basic digital scope with a stupidly low band width but good for checking if clock pulses etc are there and does provide rudimentary cursors and automatic measurements etc, especially handy as a floating scope.

[bitseeker]

ON-ON-ON mini switch.
Impossible to find at local stores so I had to web-buy.

I thought that was called a "jumper". Thanks for including the diagram.

[Mr.B]

ON-ON-ON mini switch.

I am curious as to an application where such a switch might be used.
Can someone enlighten me.

[Specmaster]

ON-ON-ON mini switch.

I am curious as to an application where such a switch might be used.
Can someone enlighten me.

Transformer tappings?

[Mr.B]

Ah, yes, that makes sense.

[PTR_1275]

We used to use them for measuring 3 battery bank voltages from one meter.

[bitseeker]

That also makes sense. I had never seen a switch with this kind of arrangement before. Pretty useful.

[capt bullshot]

ON-ON-ON mini switch.

I am curious as to an application where such a switch might be used.
Can someone enlighten me.

It can be wired as a single pole, triple throw switch, like the ones with the rotating knob, but with a lever.
Quite useful back in the days, when you wanted to avoid additional electronics to emulate this behaviour with the more common ON-OFF-ON switch.

[Mr.B]

It can be wired as a single pole, triple throw switch, like the ones with the rotating knob, but with a lever.

I clearly don't have my Tetris hat on tonight.
How would that be wired?
Thanks.

[capt bullshot]

It can be wired as a single pole, triple throw switch, like the ones with the rotating knob, but with a lever.

I clearly don't have my Tetris hat on tonight.
How would that be wired?
Thanks.

Too lazy to make a sketch, so I try to describe it:
Common is middle pin of upper switch. Connect left pin of upper switch to middle of lower.
Pole 1 is left pin of lower switch,
Pole 2 is right pin of lower switch,
Pole 3 is right pin of uppser switch

[Mr.B]

Brilliant.
Thank you.

[Calambres]

Those ON-ON-ON switches are widely used to soup up electric guitars but this is not my case (this time... have look at my signature )
I've ordered it to finish my Mr. Carlson's "Ultra Sensitive Forecasting Capacitor Leakage Tester":

[JaspaJami]

Arrived today. Both pass self test without problems but 33220A have some problems with rotary encoder. Seems that im not only one who have those: http://www.dasarodesigns.com/projects/cleaning-the-encoders-in-agilent-33220a-function-generators/

320€ totally posted to home. Not bad.

Wow, that's a great price. Just a 34401A can cost a lot more than both of these.

i agree, it was good deal.

Funny was that i was she was selling Agilent Power Supply that i bought from her for 120€. Well, there was a mistake and she didn't know that there was multiple different units and she had picture from wrong unit. Did see that before shipping and did say that actually she was selling 34401A and do i still want it for 120€. For sure i agreed. And then i asked if she has some more and there was still this 33220A that i agreed to buy for 200€

[Kjelt]

Bought this last week, was always on my wanted list but since the price now dropped <€100 I could not resist getting one, a Wiha Torque screwdriver with universal bitholder so I can use all my bits and set the torque on the screwdriver from 0,8Nm - 5Nm
Wiha, what else ? 

[thm_w]

Really impressed with this seller of COB LEDs. They have some unique designs, its mostly car oriented (12V rating) but they have lower voltage as well.
For 12V its about 9-11V across the LEDs depending on color, then the 3V ones are 1.9-2V or so. For the 12V I just used a resistor, for the 3V would need a small current regulated dc-dc ideally.

Don't get the triangular red/yellow LEDs yet, they appear to be rejects as one or two LEDs are not lit (still works OK though, as they are in parallel).

https://www.aliexpress.com/store/group/COB-bulb-chip/1657218_260583422.html

[Terry01]

Bought this last week, was always on my wanted list but since the price now dropped <€100 I could not resist getting one, a Wiha Torque screwdriver with universal bitholder so I can use all my bits and set the torque on the screwdriver from 0,8Nm - 5Nm
Wiha, what else ? 

Nice driver set buddy!

Looks very well made and put together and well worth the price. I'm sure it'll last you a long long time.

[Specmaster]

As promised here are a couple of photos of the new scope, nice, now to learn how use this beast, much different to other scopes.

[gamalot]

My first vintage Keithley instrument. 

Here is the video from The Signal Path:

https://www.youtube.com/embed/pMYK5qoQvYo

[Specmaster]

In the auction where I won that Fluke 3390B, there was also a Keithley 220 and 230 and I almost went for them but decided against because of their size and once I calibrated my meters etc, they would be gathering dust. Besides it be getting to the stage where I'd be getting calibrators to check calibrators and thats a step far