Author Topic: What did you buy today? Post your latest purchase!  (Read 1452080 times)

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Online Specmaster

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Re: What did you buy today? Post your latest purchase!
« Reply #6825 on: June 12, 2018, 04:36:07 pm »
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.
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Offline bitseeker

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Re: What did you buy today? Post your latest purchase!
« Reply #6826 on: June 12, 2018, 09:13:35 pm »
ON-ON-ON mini switch.
Impossible to find at local stores so I had to web-buy.

I thought that was called a "jumper". ;D Thanks for including the diagram.
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Offline Mr.B

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Re: What did you buy today? Post your latest purchase!
« Reply #6827 on: June 12, 2018, 09:37:42 pm »
ON-ON-ON mini switch.

I am curious as to an application where such a switch might be used.
Can someone enlighten me.
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Re: What did you buy today? Post your latest purchase!
« Reply #6828 on: June 12, 2018, 09:41:05 pm »
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?
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Offline Mr.B

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Re: What did you buy today? Post your latest purchase!
« Reply #6829 on: June 12, 2018, 09:43:23 pm »
Ah, yes, that makes sense.
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Online PTR_1275

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Re: What did you buy today? Post your latest purchase!
« Reply #6830 on: June 13, 2018, 04:32:25 am »
We used to use them for measuring 3 battery bank voltages from one meter.
 

Offline bitseeker

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Re: What did you buy today? Post your latest purchase!
« Reply #6831 on: June 13, 2018, 04:51:44 am »
That also makes sense. I had never seen a switch with this kind of arrangement before. Pretty useful.
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Online capt bullshot

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Re: What did you buy today? Post your latest purchase!
« Reply #6832 on: June 13, 2018, 04:58:34 am »
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.
Safety devices hinder evolution
 

Offline Mr.B

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Re: What did you buy today? Post your latest purchase!
« Reply #6833 on: June 13, 2018, 06:33:08 am »
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.
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Online capt bullshot

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Re: What did you buy today? Post your latest purchase!
« Reply #6834 on: June 13, 2018, 07:44:02 am »
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
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Offline Mr.B

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Re: What did you buy today? Post your latest purchase!
« Reply #6835 on: June 13, 2018, 08:23:05 am »
Brilliant.
Thank you.
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Offline Calambres

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Re: What did you buy today? Post your latest purchase!
« Reply #6836 on: June 13, 2018, 08:32:15 am »
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":


Offline JaspaJami

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Re: What did you buy today? Post your latest purchase!
« Reply #6837 on: June 13, 2018, 06:12:49 pm »
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€

Online Kjelt

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Re: What did you buy today? Post your latest purchase!
« Reply #6838 on: June 13, 2018, 06:55:03 pm »
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 ?  ;)
 

Offline thm_w

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Re: What did you buy today? Post your latest purchase!
« Reply #6839 on: June 13, 2018, 09:03:55 pm »
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
 

Offline Terry01

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Re: What did you buy today? Post your latest purchase!
« Reply #6840 on: June 13, 2018, 09:32:05 pm »
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.
Sparks and Smoke means i'm nearly there!
 

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Re: What did you buy today? Post your latest purchase!
« Reply #6841 on: June 13, 2018, 10:05:14 pm »
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.

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Online gamalot

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Re: What did you buy today? Post your latest purchase!
« Reply #6842 on: June 13, 2018, 10:09:25 pm »
My first vintage Keithley instrument.  :)

Here is the video from The Signal Path:

https://www.youtube.com/embed/pMYK5qoQvYo
« Last Edit: June 13, 2018, 10:28:19 pm by gamalot »
 

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Re: What did you buy today? Post your latest purchase!
« Reply #6843 on: June 13, 2018, 10:29:15 pm »
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  :-DD
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Online gamalot

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Re: What did you buy today? Post your latest purchase!
« Reply #6844 on: June 13, 2018, 10:35:37 pm »
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  :-DD

I have 30+ bench instruments and most of them are not necessary.  ;D
 

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Re: What did you buy today? Post your latest purchase!
« Reply #6845 on: June 13, 2018, 10:37:54 pm »
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  :-DD

I have 30+ bench instruments and most of them are not necessary.  ;D
I can echo that as well, ut I do need to squeeze me into my tiny box room  :palm:
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Offline Nominal Animal

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Re: What did you buy today? Post your latest purchase!
« Reply #6846 on: June 13, 2018, 11:18:39 pm »
Analog Discovery 2! (Digilent Inc. documentation)

I was saving up to a benchtop oscilloscope, but realized I could not afford that and differential probes.  I want to do differential measurements, to characterize power supplies I can use with SBCs like Odroid HC1 that require a well-regulated 5V supply.  (They're very finicky, and if you use a spinning-disk HDD, they also require quite a lot of current.) The 100 Msps definitely suffices for me for now, as does the ±25V analog and ±5V digital signal range.  I'm also working on some microcontroller projects, including one scientific one, interfacing to pressure and PT100 temperature sensors in an experiment. I've needed tools to examine e.g. power rail noise, since the sensors are quite sensitive; I'm hoping the AD2 will help.

« Last Edit: June 13, 2018, 11:20:59 pm by Nominal Animal »
 

Offline Terry01

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Re: What did you buy today? Post your latest purchase!
« Reply #6847 on: June 13, 2018, 11:26:17 pm »
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.




That's 1 nice instrument buddy! I am a little jealous! JUST A LITTLE!!!!! honest just a little  ;D
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Re: What did you buy today? Post your latest purchase!
« Reply #6848 on: June 14, 2018, 12:05:55 am »
Well, keep your eyes peeled for companies pulling out the UK because of the forthcoming Brexit, thats how I got this one. Philips are pulling out of UK and moving into Europe and just getting auction houses to clear out their old premises. This came from a working Lab and they had about 6 of these, mixed between 100MHz and 200MHz, the others were 4 channels which I prefered TBH but they rapidly rose to dizzy prices. This little 2 channel chappy started off low in the pre auction bids and I was a little worried if everyone else had been to site and knew something I didn't. I however went for it and it went for a low price + buyers premium and VAT. However, as it turns out I had nothing to worry about, its fine.
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Offline tsman

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Re: What did you buy today? Post your latest purchase!
« Reply #6849 on: June 14, 2018, 12:22:39 am »
Analog Discovery 2!
It isn't differential input but the BNC adapter for the Analog Discovery is a useful addition. Increases bandwidth for the scope + signal generator functions and lets you use regular scope probes. The digital I/O lines are passed straight through. I'd recommend getting some jumpers with the long tabs though as the 0/50 Ohm impedance selection jumpers on the adapter are a bit annoying to pull out.
 


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