The shielding tag has no wiki summary.
4
votes
7answers
158 views
Why does an XLR connector use 3 pins instead of two
Why does XLR connectors use 3 pins instead of just 2. The wiring is
...
3
votes
4answers
80 views
Energized circuit in a 3M Static Shielding Bag (silver color)
I'm wondering if it's safe to put an energized circuit in a static shielding bag...as part of a high altitude balloon project.
I'm not too sure how these work, so I tried seeing if either the outside ...
2
votes
1answer
136 views
EMI/RFI emissions and computer cases
I have designed a computer case (enclosure) for mini-itx motherboards.
Its bottom and rear are made out of 2mm thick aluminium and the sides and top out of 4mm plastic (ABS).
I'd like some advice ...
1
vote
3answers
141 views
Why would this wire be shielded?
I'm trying to work out how I might emulate this assembly to replace the seat weight sensors below. I'd guess the sensors are just strain gauges, so a variable resistance or maybe capacitance. ...
3
votes
1answer
165 views
Connecting the Shield of a strain gage cable connector to PCB with ADC
I have a half-bridge strain gage sensor (pre-assembled product) with a 30cm cable, which I am trying to interface with my PCB containing a 24-bit ADC.
The connector at the cable end toward the ADC ...
6
votes
1answer
272 views
Proper shielding techniques for chassis grounded equipment located 30 feet apart
I am just hoping to get some best practices out of this discussion:
I have two pieces of equipment that are located about 30 feet apart and bolted to a metal frame (chassis ground). They interface ...
2
votes
1answer
234 views
Best practice design ground and shielding
Case:
I design a pcb with a microprocessor and a adc (I'll leave out the details).
Is this correct:
The digital ground and the analog ground should be connected, but by a small passage.
Next ...
5
votes
3answers
145 views
Running router out of its case
I'm currently building a robot, and as part of its spec it must connect to a wifi network. I have a Belkin wireless router, which I have taken out of its case to expose the PCB.
My question is:
Is ...
8
votes
2answers
247 views
How to check whether a component can work in strong magnetic fields?
I want to design my PCB to operate nicely even when we place it next to a neodymium magnet. How to check whether my component can work in such condition without shielding?
Edit: I haven't face any ...
4
votes
1answer
426 views
How can a shield winding in the transformer be helpful without fully covering the core?
This article describes the Apple iPhone charger circuitry in great details. It mentions the shield winding in the flyback transformer. The shield winding is simply an extra most outer winding and the ...
5
votes
3answers
2k views
How important is the shield on an RJ45 connector?
If I am going to use a PCB mount RJ45 connector for 100mbps Ethernet, does it need to be a shielded connector, or can I get away with using an unshielded one?
Is there some standard which deals ...
2
votes
3answers
1k views
How do I shield a card like Visa payWave and MasterCard PayPass to block its communication?
This is basically a replication of this question on Personal Finance SE. Suppose there's a wireless smart card like Visa payWave or MasterCard PayPass or MIFARE Ultralight. The owner wants to ...
1
vote
2answers
402 views
How can extend the cable distance from a condenser microphone to the ADC without loosing fidelity?
I am new here so please forgive me for a vey basic question. I have a TASCAM iM2 in my possession. This is a stereo condenser microphone coupled to an ADC that connects to the the latest iPhone models ...
6
votes
2answers
383 views
Shielding and Ground loops
I have various pieces of equipment that all need to be connected to GND (Chassis GND). The issue I'm having is that I'm connecting an ADC card inside a computer through a metal box with custom ...
14
votes
6answers
2k views
Noise reduction strategies in electrophysiology
When recording electrical signals from cells (in a dish or inside a living human or animal body), one major problem is to increase the signal to noise ratio.
These signals are usually in the 10uV ...
5
votes
2answers
472 views
Aluminum project box: should BNC conenctors touch it?
I want to make a aluminum shield box (this is my first time!), I made some holes to host some female BNC connectors. Now my question is, should I isolate the BNC connectors from the box? Or should the ...
0
votes
1answer
113 views
Coaxial and Triaxial connectors
Can the coaxial cables be connected to a triaxal connector and other way around? I am asking this because I have a instrument that has BNC connectors, but I want to use triax for extra shielding. If ...
8
votes
1answer
298 views
Shielding can, what is the proper way?
I like to protect a sensitive circuit of mine with a shield. I don't have a picture but basically, I have put together a 1mm thick ground rectangle on top layer and I will place the shield on top of ...
4
votes
2answers
168 views
What types of Shielding and Filtering would allow devices to be used in a MRI environment?
I'm working on a respiration monitor and I was wondering what area of electronics I would need to get familiar with to design the hardware filters that would stop the RF/EMI from frying the system.
...
4
votes
1answer
1k views
How do I shield my pc-speakers from mobile interference? [closed]
I have a budget (not cheap :P) pc-speaker set from Logitech (2.1) at home which are extremely sensitive to cellsignal interference. My iPhone is about 1m from any part of the set - including the ...
8
votes
2answers
512 views
Can a shield propagate EMI?
At a job site we typically have 10 vehicles connected to a single vehicle (star layout) by a 100m 5 conductor cable carrying power(unused), ground, shield, CANH, and CANL. The shield is grounded on ...
5
votes
1answer
245 views
Runing network cable near X-Ray equipment
My mother runs a small veterinary clinic. She is getting a new X-Ray machine that will need a network connection to send digital copies of the X-Ray to the server. I will be installing a wall plate ...
4
votes
3answers
803 views
Non-metal cases
This question is really aimed at computer cases, but I suppose it also applies to other PCB cases. Most of the Computer cases I come across are aluminium, or else some other metal; As I understand it ...
5
votes
6answers
348 views
Shielding Techniques for Digital Sensor
What shielding techniques would be best suited for a digital sensor (3 wires - Pwr, Gnd, Sig) in a noisy environment (specifically fluorescent lighting)?
Twisted pair (trio in this case) works well ...
6
votes
3answers
175 views
Wire to use with Sensors
I am trying to minimize interference in a sensor project. Can anyone recommend a good shielded wire I can solder into my board?
