Questions tagged [copper]
The Element Cu known for its electrical and thermal conductivity, both of which are exploited in EE. THis material is typically what is used in PCB's for the traces and also modern CMOS processes have Cu layers in them due to it's superior conductivity. You also see copper in heat sinks to carry heat away from components.
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Ampacity of Conductive Tape
How do I measure ampacity of conductive tape? I want to replace a wired battery to equipment connection with copper adhesive tape because I need a very low profile on the connection.
The maximum ...
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Copper layer delaminates on Printed Circuit Board
I have been making the PCB boards by the conventional process since last few years (pressing, etching, drilling, soldering).
I usually iron the photo paper to the PCB board for around 15-20 minutes ...
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Copper dimension around the PCB component's hole (pad?)
I had my first PCB manufactured (by a Chinese manufacturer). In this first version I only used thru-hole components (not SMD).
I used the latest version of Eagle to design it, without taking care to ...
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Corroded PCB from Rechargeable NiMH battery
This NiMH battery began to leak battery acid onto the circuit board / PCB below it. Some of that acid ran down one of the wires connected to the battery and pooled up at the foot of the plug where it ...
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How to test conductivity of copper wire? [closed]
I purchased 90 meters of 0.35mm2 stranded copper conductor wire. How can I test this wire for conductivity to ensure quality copper was used?
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Current carrying cable/busbar cooling ways in an aircraft
For an aircraft has an altitude 35000 feet, what'd it have to cool its cables/copper busbars up? High altitude means lower air density and it means lower oxygen, convection doesn't make sense and if I ...
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Reasons for using no conductor finish on PCB
Some PCB manufacturers, such as Eurocircuits or PCBWay, offer the choice of no conductor finish (vs ENIG, HASL, Immersion Tin, OSP or others). Since this option is not often chosen, it raises the ...
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Power problems related to copper wires and pigtails
I am using a battery to power a odroid which requires 5V/4A. The battery voltage when measured using a multimeter was around 26.7.
I had two setups:
I used a 1 sq mm copper current carrying wire to ...
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Tank Water Level Indicator Wire
I am building a simple water level indicator (approx like the circuit below) for my tank.
However, I am wondering about the wiring, for I suppose copper cables corrode in water and produce toxic ...
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Can Silkscreen Go Directly Onto Copper PCB Layer? (No SolderMask)
Hi I am wondering if a PCB silkscreen layer can be printed directly onto a copper layer without a solder mask. I don't see this often but I have a design for which this would be useful. Has anyone ...
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PCB grounding through screw head
Can we use zinc plated screws for PCB grounding?
Means the zinc coated screw head will be in contact with copper trace on PCB for grounding.
But this can cause galvanic corrosion between zinc and ...
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DIY electromagnet using copper wire and AC adapter
I want to make for some demonstration (caching some paper clips on ON and doping them on OFF) electromagnet made from copper wire (should it be single wire?) with ferromagnetic inside coil:
As power ...
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Why does having magnetic material in the middle of a stator help generate a current?
It seems unintuitive to me why putting a stationary hunk or iron or neodynium in the middle of a copper coil generator would increase its conductivity, because the metal could act as its own ...
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How To Hide The Outline of The Polygon in Altium
I have copied a polygon pour from one PCB to another, but I cannot seem to hide the outline on the new board. Anyone know how to do this? Comparison below:
New Board:
Previous:
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How do I calculate the resistance of a copper bar?
I'm trying to calculate the resistance of a copper bar in a DC current, but I'm not sure how to do it. The only things I've seen online calculate the resistance of a wire and ask for its gauge, but a ...
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