All Questions
6
questions
12
votes
2
answers
646
views
Galvanic corrosion between silver plated MCCB terminals and aluminium
We are planning to install a switchboard in one of our garages. The MCCB (moulded case circuit breaker) is used as a main incomer which has silver plated copper terminals. The aluminium busbars are ...
- 327
2
votes
3
answers
10k
views
Can an insulated copper wire oxidize down its entire length?
I was doing some electrical wiring on a trailer today and was surprised to see black instead of shiny copper when I cut and stripped a section from the middle of a long section of uninterrupted wire. ...
- 145
1
vote
1
answer
466
views
Fixing corroded contact surfaces on PCB
Looking at a Seagate HDD that no longer connects. The motor is running, but does not show in devices. The disk has production date is 12361 (2012-03-05).
Before having a look inside I checked out the ...
- 13
1
vote
0
answers
230
views
Can the acetic acid base silicone sealant damage the lacquer layer of the enamelled copper wire?
I know that acetic acid silicone is not the best choice for electronics.
There is a passive audio crossover with large air core coils (70mm diameter, 20mm hole in the middle) .The coils are glued with ...
- 11
2
votes
3
answers
1k
views
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 ...
- 205
3
votes
2
answers
1k
views
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 ...
- 31