Electrical Engineering

Questions tagged [enclosure]

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An enclosure is a box to hold your electronic device.

111 questions
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8
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1answer
169 views

Are these (dis)assembly screw symbols standardised?

Sometimes there are these two half-arrow symbols on PCBs and on enclosures. See the images, for examples. Those symbols are often placed near the screws, that are to be unscrewed upon disassembly. ...
0
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0answers
28 views

Placing piezo disk in vibration sensor

I am designing a vibration sensor in enclosure to be placed on vertical surfaces, like windows, doors, etc. My first try was with ready made sw420 module, but looks like it is to sensitive for my ...
4
votes
1answer
126 views

Grounding PCB Within Aluminum Enclosure

I have been doing some research on this question and, while I found a number of questions here asking something similar, I don't quite get the side-by-side comparison I am looking for. Therefore I ...
0
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0answers
28 views

Durable, UV-resistant labeling for electronics enclosure

I'm not sure if this is the right forum for this question. I'm asking here in hopes that someone has dealt with this. If this is the wrong forum, please do not vote me down. If necessary, I'll simply ...
2
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3answers
139 views

Heat dissipation by convection for ICs placed upside down

I'm currently designing a PCB with a couple of fast electronic elements (600MHz ARM, DDR3 ram etc.) and I'm quite puzzled which layer should those elements be placed upon. The product will be closed ...
9
votes
2answers
958 views

Does paint affect EMI ability of enclosure?

This could be a very stupid question, but when it comes to RF you never know. Does painting (non-conductive) over the top of a grounded metal enclosure affect its ability to absorb/block RF ...
2
votes
1answer
72 views

Identify this packaging

I've seen this packaging used by many companies, specifically in mobile equipment, automotive ECU's, marine, and other harsh environment applications. I doubt all these manufactures are making the ...
0
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0answers
31 views

Mounting Lithium Packs in Enclosures

I am planning to use a battery cell similar to the picture below in a product I'm designing. Is it ever appropriate to mount these directly on top of a PCB? (all components will be on one side of the ...
0
votes
2answers
114 views

Can water condensation appear on PCB in IP67 enclosure box?

Does IP67 box protect PCB from moisture? If not, is it OK to have an outdoor air humidity sensor soldered on PCB in IP67 housing? Also if it doesn't block moisture, is there any reason to use IP65/...
1
vote
1answer
95 views

Do metal enclosures block radiated emissions better than plastic ones?

Why are some enclosures made of metal instead of a lighter insulated material? Is there any electrical reason for that? Will such enclosure block radiated EMI in and out better than a plastic one?
0
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1answer
47 views

Is the meshed metal cage connected to the earth terminal in these embedded power supplies?

The SMPS below has screw terminal mains entry as line, earth and neutral: Is its meshed metal cage in general connected to the earth terminal internally? I could check it if I had one but at the ...
1
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0answers
91 views

PCB hanging upside down in its enclosure

Would this be a problem in a moderately high vibrations / shocks environment (passenger car interior) ? The screws are 1.8 mm thread diameter, 5 mm long, the PCB being some 90 x 60 mm with nothing ...
9
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3answers
1k views

PCB enclosure tolerances [closed]

I can imagine problems of PCBs not fitting into their enclosures or misaligned screw/hole pairs. Are these type of problems common, especially with the dirt cheap enclosures? I am planning to use one ...
4
votes
2answers
169 views

What is the best way to mount a LiPo battery in a project box?

If you were going to use a LiPo battery such as this one: . . . and needed to mount it safely and securely inside a project box similar to what is pictured below what best way to achieve that?
0
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3answers
64 views

I designed a touch PCB keypad what can I do for silking and covering

I want to design a custom keypad for my board. I put my board in a Plastic box 15cm x 19cm and the box has a simple box door. I want to put a keypad and a 2x16 character LCD in this door to control ...
-1
votes
1answer
87 views

Safely housing a power supply

I'm building a 3-d printer, which will be driven by a smoothieboard. This needs a 24V power supply. I've bought the one shown below: What I don't know is how to house this safely. I think there's ...
5
votes
1answer
187 views

Flat Yagi antenna Enclosure

So, I was annoyed that my Yagi antenna was enclosed in a plastic-tube, which lets it roll around and fall off the table occasionally, but without its enclosure the elements hooked in anywhere. So I ...
5
votes
4answers
2k views

How to fix a PCB inside this enclosure?

This is a related question to How to fix this in an enclosure without glueing. However, for a protoboard/PCB, how could I attach it to the enclosure? The bottom of the enclosure has holes for ...
3
votes
4answers
587 views

Heat problems when using 5 buck/switching converters in a double isolated enclosure?

I want to use 5 step down converters (220 VAC -> 5V DC) inside an enclosure inside an enclosure (double isolation). The step down converters are similar to these. There will be 5 of them, where one ...
3
votes
1answer
136 views

Manufacturing of Translucent LED Indicating Symbols (e.g. router indicator lights) [closed]

I've been researching how manufacturers create custom LED-illuminated symbols such as those seen on the router in the image below: I haven't been able to find any information online from custom ...
0
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3answers
210 views

Inline Voltage Divider - do they exist?

I'm looking for a neat off the shelf solution to halving a voltage via a resistor network. Some kind of small module, (probably GND, signal in, signal out) that can be wired inline with a sensor that ...
5
votes
1answer
123 views

How to mount pcb with IEC320-C14 power entry connector inside enclosure

I am making a PCB which has one IEC320-C14 and one IEC320-C13 connector on it (Like this one). The PCB will be quite small, just large enough for some sensing circuitry; between 5 and 8 square inches. ...
29
votes
8answers
6k views

Moisture Trapped in IP66 Enclosure

I got a field report of a product which is sealed in an IP66 aluminum die cast body. it was observed that water/moisture had condensed inside the enclosure over and over and creating some white marks ...
0
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2answers
80 views

Questions about earth grounding enclosures

A text mentions about the importance of connecting the earth wire to an instrument case/enclosure as follows: Instruments with ungrounded cases can become lethal devices in the event of ...
0
votes
2answers
106 views

Ways to thermally manage a small enclosure?

hopefully this is an okay place to ask this question, but anyway, I'm working on a project to measure efficiency of a mono-crystalline solar cell based off temperature in the enclosure. The solar cell ...
3
votes
1answer
160 views

Watertight enclosures - what production steps are required to ensure no condensation on the insides?

Background We want to waterproof an electronic device and the specifications call for IP-65 protection. To this end, we have selected a sealed polycarbonate box to put the electronics in. The ...
2
votes
1answer
79 views

5.8GHz omnidirectional antenna inside wood

If one would enclose 5.8GHz transmitting omnidirectional antenna inside dry wooden block (wood would be cut to semi-precisely fit the antenna), how much it would attenuate the signal? (roughly) And ...
0
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0answers
32 views

A question about a sensor in a metallic enclosure

I need to mount this sensor inside an aluminum or metallic enclosure. Then the sensor will stay inside the enclosure. The enclosure will be mounted outdoors on a bridge concrete or some part I dont ...
0
votes
4answers
101 views

Mounting a sensor against the inside of an enclosure

I have a plastic ABS project enclosure which I'm trying to figure out how to mount a sensor to the inside of, against a window that will be placed into the enclosure wall so that it looks through the ...
0
votes
1answer
105 views

DIY EMC Tents for EMC/RFI testing?

Been looking into doing from preliminary work on EMC testing in house prior to sending various bits of machinery to certification labs. One suggestion is that we carry out the testing in an EMC tent ...
1
vote
1answer
121 views

Grounding an Enclosure

I have been working on a hi-fi audio amplifier, and I plan to put it in a metal enclosure when it is finished. The amplifier is (relatively) low power, so I'm powering the system from a wall-wart ...
2
votes
1answer
499 views

Temperature sensor reads higher inside enclosure

I have an HIH6130 temperature and humidity sensor inside a plastic enclosure with a Particle Photon. When it takes reading while inside the enclosure, the readings are ~ 2 degrees too high, vs ...
0
votes
3answers
110 views

How do I make my electrical enclosure waterproof, what type of connectors I use?

We are designing this meter which will monitor house hold consumption. The problem that I am facing right now for days and weeks now, how do I make the meter water proof. I have tried everything but ...
2
votes
2answers
568 views

What metal-printing methods exist to create this style of finish? [closed]

I have an old panel faceplate (circa 2000) that I am trying to create a replacement for. It appears that the two commonly available methods to put graphics on a metal faceplate are UV printing and ...
21
votes
17answers
4k views

How to 'fix' this in an enclosure without glueing?

I have an enclosure, and want to fix/put a STM32 inside, a relay and probably later a small circuit board. However, the STM (STM32F103C8T6) and the relay do not have holes to fix them... and I do not ...
0
votes
1answer
549 views

Will a cheap RFID reader work behind a 2mm aluminium sheet?

I'm building a information contact panel that will serve as a point of communication between employees and their company. Part of this process involves putting an ID card to the panel, so it can be '...
0
votes
1answer
187 views

Grounding a soldering iron and it's enclosure

So, I assembled a soldering iron kit and put the control unit in an aluminum enclosure and intend to use a Mean Well SP-240 24V power supply with it. I just wanted to verify a couple of things. The ...
3
votes
1answer
136 views

Tactile switches to meet EMC standards and IP67

I'm designing a handheld device that has just a few buttons that will make some configuration changes. (Very much like a game controller) I'm currently making a set of 3 prototypes - a production run ...
0
votes
1answer
58 views

What converter to use?

I am going to build a stage box, and I need 5V for that (to add some logic, maybe even later an STM32). I also need mains (220V) for a 12W RGBW LED PAR light. At first I thought to put in the box a '...
0
votes
0answers
267 views

Connecting multiple series battery holder in parallel of 18650 batteries

I'm pretty new to this, i understand how series and parallel work. Just want to ask if it's safe to connect multiple series battery holder in order for them to be parallel? If my battery are all the ...
6
votes
5answers
972 views

Motor enclosure top lid has electric spring

I fear this might be a little bit too simple for this Stack but I'll still ask. I dismantled a motor from an electric meat slicer of the very old type: When I opened the enclosure I found that the ...
0
votes
1answer
72 views

Modifying power strip in enclosure to attach to power entry connector

We are using an off-the-shelf power strip to distribute power to several devices in a large aluminum, painted Hammond brand enclosure. We'd like to be able to switch the power on and off with an ...
1
vote
1answer
224 views

Heat problems for STM32F103C8T6 in enclosure

For my hobby project, I'm intending to add a STM32F103C8T6 (and later STM32F407VET6 or ZET6) into an enclosure. For worst case case, let's take the 407, the datasheet can be found here. On page 80, ...
0
votes
1answer
172 views

vibration dampening comparison [closed]

I am trying to mitigate between costs, ease of mounting, of enclosure matching and costs for a smallish PCB (< 100 g / 4 oz and about 35 x 50 mm / 1.5 x 2 in) used inside a passenger car. And so ...
1
vote
2answers
927 views

Grounding without Ground

My system use only line and neutral connection from mains (no ground.) Inside this system it is converted to 5V using SMPS. My enclosure is metal, I need to ground this enclosure. Since I do not ...
3
votes
3answers
237 views

Shielding Amplification Stages Separately

I am currently designing a prototyping board for fast pulse detection with 4 amplification stages at the input. I am currently not able to provide a schematic portion of it as I don't have access to ...
2
votes
1answer
458 views

Metal enclosure for custom car stereo project

I'm thinking about developing a custom car stereo, and it surprised me that there's no DIY enclosures for this purpose. I've just found plastic boxes in the 1 DIN size which can be installed into an ...
0
votes
2answers
71 views

battery enclosures - i am not geting the hang of it [closed]

I find it so hard to search for some casings for my board... Why are the battery casings so rare ? I must be missing something. Other questions Will this case fit 2 AAA batteries ? how do I ...
3
votes
0answers
858 views

Tactile switch actuator extension methods?

I am not a 100% sure this is the right place to ask this, but I couldn't figure out another, more appropriate community. I am designing a PCB for a product, which will have a tactile switch. The PCB ...
4
votes
1answer
598 views

Acrylic mounting and esd

I like the aesthetic of clear acrylic mounting of PCBs and I want to use it for a project I'm working on. For example as seen in the Mighty Ohm Geiger Counter, Is esd something I should worry about? ...

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