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Questions tagged [workbench]

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0
votes
1answer
66 views

Electrical gremlins under high Amp draws

I'm new here so I hope all goes well! I have used an ATX PSU to create a power bench tester for testing automotive headlights. HID in particular which draw around 8-10amps on startup. I have noticed ...
0
votes
0answers
152 views

Can a grounded static-shielding antistatic bag be used as a circuitry work surface to protect from ESD?

Basically, I have looked around about how to take proper care with respect to ESD and I am quite confused. I know an antistatic bag of any type would not provide additional protection from ESD if used ...
0
votes
1answer
130 views

Problem getting STM32 debugging to work

Yesterday I debugged a program on my STM32F103C8T6 with Eclipse STM32 workbench without any problem. Today I tried the same but constantly get this error. What I tried to fix: Erase the chip with ...
0
votes
1answer
41 views

replacing pots on bench psu

I have this bench psu. (datasheet, manual). It has worked wonderfully so far, but my one problem is that the current adjustment knobs are only 1 turn, while the voltage knobs are 10 turn. I want to ...
2
votes
1answer
165 views

How can an electronics lab workbench be made feline-compatible?

I have a small-ish desk/lab workbench at my house with basic gear (meter, scope, PSU, etal as well as probes for same) as well as my PC and project stuff (boards, mostly, although a few parts-on-cut-...
1
vote
2answers
96 views

60Hz 20vac on bench top

I accidentally stuck my oscope probe into my ESD mat ontop of my work bench. I happened to look at my oscope. Surprise! There's a 20Vpp 60Hz voltage on the mat! (see picture) (note, the ground clip of ...
0
votes
1answer
933 views

Few doubts about turning an atx psu into a bench lab power supply [closed]

First, thank you for your time of reading my questions. As the title suggested, my questions are about turning a computer power supply into a lab power supply. I already did my homework and read pages ...
2
votes
3answers
994 views

Setting up a non-ESD area in a lab

this question is regarding standards and/or best practice guidelines for ESD control in a professional lab environment. We are currently tightening up our (admittedly too lax) ESD control in the labs,...
2
votes
1answer
357 views

How do variable current limiters work in power supplies?

Bench top power supplies often enable you not only the set the voltage, but the maximum current. How do these bench supplies provide this variable current?
4
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3answers
14k views

LM317 based power supply with current limiting

I'm trying to build my own Bench Power Supply but I'm having a hard time to find a good design (circuit/project) for it. Here are my requirements: Input: main using a 18V 2A transformer Output: 0-...
2
votes
1answer
4k views

How does a first-timer set up a correctly-grounded workbench / work-station?

I'm new here, and new to electronics in general. (for the most part … my [awesome] father had me building some simple Heathkit robots and panels with him when I was a kiddo, but I'm getting into it “...
3
votes
2answers
231 views

Are the ratings on a bench supply absolute or do they imply total power output?

If a bench supply is rated as "30V, 5A", does that does that imply a 150W total output (meaning it could supply say, 10A at 15V), or does it mean that 5A is the maximum it can supply at any voltage in ...
-1
votes
1answer
123 views

Electronics Workbench file structure [closed]

I have searched for information about the .ewb file structure, but I have come to nothing. I opened it with notepad and it´s ciphered, by no known public cipher I know. Can someone give me an advice ...
1
vote
2answers
1k views

how to use a spectrum analyzer?

This is a new topic to me so it would be great if someone could give me a few pointers. I have an amplifier that I would like to get the frequency response for and a spectrum analyser with Probes A, ...
9
votes
2answers
2k views

What should I look for when shopping for an ESD bench mat?

I would like to get an anti-static mat for my bench top and found these two: DigiKey: Table mat ESD blue 2X4' rubber Mouser: Antistatic Control Products 2X4' blue table mat What should I look for ...
-2
votes
1answer
130 views

Prepackaged solutions for voltage step-down [closed]

I want to buy this eventually; http://www.vellemanusa.com/products/view/?id=524708 Howver, it's rated for 10V max. Is there a more or less prepackaged solution for voltage stepdown? I can build ...
9
votes
5answers
11k views

How can I identify lead-free solder if it's unpackaged?

Is there a test to determine whether solder is leaded or lead-free? Perhaps conductivity/resistance?
9
votes
11answers
27k views

What do people use to hold an object in place while being worked on?

I would like to know what people usually do when trying to solder wires together, and hold small things in place while you fasten them together, etc. I can picture one or more vices attached to a ...
16
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12answers
80k views

How to store all those spare cables and connector cords?

One thing that it seems I have many of are cords and connector/patch cables. I don't want to throw out all of them, but am looking for useful storage tips? Most are under 6 foot / 2 metres long, ...
14
votes
12answers
2k views

What Workbench Safety Improvements Have You Made?

What was your worst electronics workbench accident involving equipment, voltage, soldering irons, chemicals, or whatever else, and what changes have you made to prevent that type of accident from ...
11
votes
10answers
6k views

EMI: CFLs vs Incandescent Lights in Your Lab?

Being a green-oriented treehugger, I've put in all CFL lights in my house. Just as much light for about 1/4 or 1/3 the power. Nice, but flourescent lights put out a lot of EMI. Does this cause ...
9
votes
12answers
35k views

What is the best type of magnifier to use for general electronics duties?

I am looking for a magnifier tool for an electronics workbench and was wondering what sort of product would be best. The device must be an all-rounder capable of doing some SMT as well as through ...