Recent Posts

1

Beginners / Re: Convert US standard 115V to International 230V

« Last post by IanB on Today at 10:42:07 pm »

I'm afraid that such approach is not acceptable for safety critical devices development because it don't guarantee that device will never consume more power under some specific conditions.

Undefined/unspecified behavior of device is not acceptable because it is unpredictable and can make harm to the patient. This is uncontrolled potentially life threatening risks for the patient and it's presence shows serious issue in validation/verification process and broken quality management system. 

The above two statements are in contradiction with each other. Either you can specify the designed behavior, or you cannot. If you specify the behavior, then you cannot also say, "but this is unacceptable, because it may behave in ways other than those specified".

2

Manufacturing & Assembly / Re: Vacuum Pick-Up Tool for Rework (Includes video of my own design)

« Last post by Doctorandus_P on Today at 10:34:39 pm »

Has anyone come across any decent pick-up tool for components?

Use the magic words "luer lock". This is the fitting used between needles and syringes. It's very popular in hospitals, but also used for dispensing solder paste, glues, and all sorts of other liquids. You can buy both straight or bent needles for very little money, and the rest can easily be made from parts lying around. (Except for the vacuum pump).

3

Power/Renewable Energy/EV's / Re: Output Capacitor Selection for Buck Converter

« Last post by uer166 on Today at 10:33:50 pm »

, and fired me ....

Are you 10000% sure it was because of that issue, and that issue only?

4

Manufacturing & Assembly / Re: AXI (xray inspection) licencing / regulatory requirments in Australia

« Last post by loki42 on Today at 10:31:40 pm »

Hah,  yeah the whole x ray part of it sounds a bit hectic. Lucky the machine had all the shielding etc.  Though I'm much less nervous about buying used optical gear! 

The fault finding capabilities does look very impressive compared to 3d AOI but I'd be keen to hear actual user opinions instead of marketing.  I chatted to Oritech (local support) and they also told me new prices...

5

Projects, Designs, and Technical Stuff / Re: How is a motor run capacitor sized?

« Last post by bdunham7 on Today at 10:26:37 pm »

electrolytic.

That certainly looks like an NP electro to me.  They probably used a 150V one to get a high enough current rating.

https://www.cde.com/resources/catalogs/BPA.pdf

6

Test Equipment / Re: Siglent SDS3000X HD and upgraded SDS1000X HD

« Last post by Martin72 on Today at 10:24:26 pm »

I would only be interested in the performance, the bandwidth less so.
And I like multi-grid, you don't get that with SoC systems either...

7

Projects, Designs, and Technical Stuff / Re: How is a motor run capacitor sized?

« Last post by Benta on Today at 10:21:14 pm »

electrolytic.

8

General Technical Chat / Re: Is LinkedIn worth keeping?

« Last post by aeberbach on Today at 10:18:56 pm »

LinkedIn started out in a deceitful spammy way, requesting access to your local computer's contacts database and then sending email to all those contacts to join LinkedIn. It's the original WhatsApp. I do not find anything there that is at all useful most times and do not care for the profile-boosting and endless "I wholly agree" that is most of the site's content.

However... I have gotten (good!) jobs through LinkedIn. I'd say keep it but don't bother with it unless you're looking for something specific.

9

Test Equipment / Re: Siglent SDS3000X HD and upgraded SDS1000X HD

« Last post by KungFuJosh on Today at 10:18:49 pm »

I would have to lie if I said I wasn't interested in the SDS7000A.
At work, I'm used to working with larger scopes, so a PC-based scope naturally has its appeal for private use.
But you have to be realistic.
Around 20000€ for a 3Ghz scope, if I bought that, nobody in my immediate environment would love me anymore.

It's settled then! Somebody in your immediate environment is going to win the lottery and buy it for you. In the end, it will only cost you a high five. 😉

10

Projects, Designs, and Technical Stuff / Re: ESR meter with extended scale.

« Last post by enut11 on Today at 10:16:31 pm »

Interesting adaption for an old analog multimeter. How does the scaling work?