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Electronics Lab Bench Setup Guide

badar.tech

211–220 of 274 posts

Re: Electronics Lab Bench Setup Guide

#211
I generally find that storage drawers and trays don't work for me. Invariably you get it all nicely organised, then at a future point you acquire a new component that breaks the organisation, or you eventually want finer grained sorting than the number of drawers/trays can provide.

The method I've settled on is a (cheap) set of steel storage shelves. I have a bunch of labelled cardboard boxes (shoebox sized) stacked on those shelves, a box per major category (resistors, capacitors, ...). Inside the boxes are a bunch of (cheap) zip lock plastic bags, each holding a particular value component.

This system is versatile as bag sizes can be varied according to how much space is required. (eg. the surface mount box has lots of small bags). It's easy to add new components as you just break out a new bag and throw it in the appropriate box. Have a "miscellaneous" box for bits that don't fit in a category and if that box fills up break out an extra box or two and create some new categories for some of the "misc" stuff. You can customise what goes inside the box, such as anti-static bags for semiconductors, no bags at all for things that will stack in a box or a box full of loose odds and sods of wire.

Shoebox sized is small enough to easily search, but big enough to hold things. The upside down lid of the box can be used as a sorting tray whilst searching.

Re: Electronics Lab Bench Setup Guide

#212

That is wonderfully thorough. And overkill for a large number of projects. But if you're doing real EE work, this is excellent stuff.

> real EE work Oof, we must have different concepts of what that means; I thought just the opposite. The dummy-load is awful and prone to oscillation on certain sources. The o'scope is entry-level, 50MHz (100 with hacks), and doesn't support any advanced analysis. There's no discussion of scope probes whatsoever. There's only one power supply, for cryin' out loud, and it's neither precise nor clean. The DMM is 3½ dig…

Even in a professional environment, there's a limit to how specialized the gear on a single bench can be. With a constraint of finite money, there's a tradeoff between specialized and general-purpose equipment. The Analog Discovery Pro is only 50Mhz, but it's radically smarter than any "real" scope I've ever used. It takes the place of the frequency counter and signal generator. The most obvious omission is a good power supply.

Re: Electronics Lab Bench Setup Guide

#213
post #48

> Rigol DS1054Z Digital Oscilloscope Interesting as I'm considering buying a scope. Does this still give the most bang for your buck in 2023? Many online commenters mention the Siglent SDS1104X-E as a more modern alternative.

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Re: Electronics Lab Bench Setup Guide

#214
post #48

> Rigol DS1054Z Digital Oscilloscope Interesting as I'm considering buying a scope. Does this still give the most bang for your buck in 2023? Many online commenters mention the Siglent SDS1104X-E as a more modern alternative.

The key differences: the screen is a bit better on the Siglent, Rigol makes you go through a stupid unlock routine to get your features, but (and this is the killer) Rigol has LXI (scriptable ethernet control) whereas the Siglent only appears to have a web-based remote control mechanism - substantially inferior IMHO.

The SDS1000X-E datasheet says that it supports SCPI over Ethernet, and there’s a programming manual available from Siglent (weirdly the links seem broken on their website)

Re: Electronics Lab Bench Setup Guide

#215

I used be an ameteur electronics enthusiast. When I was young, I used to assemble trivial circuits (dancing lights etc.): I could go to an electronics shop. They used to sell hobby kits for simple, accessible, devices. The kit had circuit layout, component list, labels, what goes where and all. I then assembled them per the layout ("this leg of the transistor goes to the left leg of the capacitor"). It worked - I use…

I mean, it seems to me that to “build an intuitive understanding” you need to use calculus or at least algebra, so you can model the circuit components mathematically in the time domain and the frequency domain.

Re: Electronics Lab Bench Setup Guide

#216

I used be an ameteur electronics enthusiast. When I was young, I used to assemble trivial circuits (dancing lights etc.): I could go to an electronics shop. They used to sell hobby kits for simple, accessible, devices. The kit had circuit layout, component list, labels, what goes where and all. I then assembled them per the layout ("this leg of the transistor goes to the left leg of the capacitor"). It worked - I use…

I mean, it seems to me that to “build an intuitive understanding” you need to use calculus or at least algebra, so you can model the circuit components mathematically in the time domain and the frequency domain.

As someone who did the math after gaining an intuitive understanding of circuits, I still tend to design circuits by intuition first and do the math after.

Imagine something like: "This needs to be biased a little bit more positive, here we use a precision diode, that needs a little bit of negative feedback, ..."

Math is important, but much more important (IMO) is a systemic understanding of how parts of the ciecuit influence each other and where they are (or should be) decoupled more or less.

Re: Electronics Lab Bench Setup Guide

#217

I was expecting to grouch all over this, but I really like it. A lot of thought went into this, and the choices are mostly very good. A few notes from someone who's been doing this 30+ years and 10 of those years as a volunteer in a community makerspace: * 10" shelves aren't nearly deep enough for vintage test equipment. If all you need is a DS1054Z, that's fine, but as you move up and your needs expand, you'll find…

This guy selss stuff he works with and just yesterday I watched about soldering pen and he actually noted that the tip is short to increase precision: https://www.youtube.com/watch?v=m6d2aj9ddbc&t=11m32s

I'v looked up TS100 and Pinecil and by default looks like they come with long tips?

I'm in the market of soon buying new soldering iron, so paying some attention, but I can't/won't order from US, so would be excellent if someone can point out where to buy quality tip that is short and holds solder like new after many uses.

Re: Electronics Lab Bench Setup Guide

#220
post #148

Earlier quoted context omitted.

Eevblog

EEVBlog is great, but... anybody just discovering the channel should be aware, Dave puts out content that fits into a number of different categories: educational, entertainment, edutainment, test equipment reviews / teardowns, mailbag, repairs, debunking, meta commentary about Youtube, career stuff, and "other". And purely educational stuff isn't a huge part of what he puts out these days. That said, he has put out s…

> And purely educational stuff isn't a huge part of what he puts out these days

That's my reading, too. He isn't quite the 3b1b of electronics. But that's not a statement of the quality of the content; just that he caters to a different audience, perhaps.

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