How does a transformer make clicking sounds when being powered ON or when it is bucking/boosting voltages, without having any moving parts inside?
In: 5
Nobody mentioned thermal expansion yet. Electronics under load generate heat, which causes metal heat sinks and enclosures to expand. Uneven expansion can make pinging noises as stress in the metal builds and releases.
Nobody mentioned thermal expansion yet. Electronics under load generate heat, which causes metal heat sinks and enclosures to expand. Uneven expansion can make pinging noises as stress in the metal builds and releases.
Transformers have an iron core to more effectively close the magnetic field between coils on both sides. This core is made of sheets of iron instead of a single piece to reduce eddy currents.
Alternating current causes these iron sheets to quickly expand and contact and this causes vibrations which in turn cause that buzzing sound.
Nobody mentioned thermal expansion yet. Electronics under load generate heat, which causes metal heat sinks and enclosures to expand. Uneven expansion can make pinging noises as stress in the metal builds and releases.
Transformers have an iron core to more effectively close the magnetic field between coils on both sides. This core is made of sheets of iron instead of a single piece to reduce eddy currents.
Alternating current causes these iron sheets to quickly expand and contact and this causes vibrations which in turn cause that buzzing sound.
I haven’t seen the actual reason it makes noise during operation mentioned yet. The core inside of conductors are thin sheets of metal glued together. They use thin sheets to minimize energy losses, because the core develops currents that oppose the induction. This current and power loss produces heat. The heat causes the sheets to expand and contract at slightly different amounts. This creates the humming sound.
Clicks are usually switches or relays, which have a physical contact that moves to turn the power on and off. The click is primarily the contacts slamming shut and open, but there is often an arc which will make sound too.
Transformers have an iron core to more effectively close the magnetic field between coils on both sides. This core is made of sheets of iron instead of a single piece to reduce eddy currents.
Alternating current causes these iron sheets to quickly expand and contact and this causes vibrations which in turn cause that buzzing sound.
I haven’t seen the actual reason it makes noise during operation mentioned yet. The core inside of conductors are thin sheets of metal glued together. They use thin sheets to minimize energy losses, because the core develops currents that oppose the induction. This current and power loss produces heat. The heat causes the sheets to expand and contract at slightly different amounts. This creates the humming sound.
Clicks are usually switches or relays, which have a physical contact that moves to turn the power on and off. The click is primarily the contacts slamming shut and open, but there is often an arc which will make sound too.
I haven’t seen the actual reason it makes noise during operation mentioned yet. The core inside of conductors are thin sheets of metal glued together. They use thin sheets to minimize energy losses, because the core develops currents that oppose the induction. This current and power loss produces heat. The heat causes the sheets to expand and contract at slightly different amounts. This creates the humming sound.
Clicks are usually switches or relays, which have a physical contact that moves to turn the power on and off. The click is primarily the contacts slamming shut and open, but there is often an arc which will make sound too.
Iirc and GCSE physics doesn’t fail me, one possible reason could be magnets clicking together. To make a transformer requires wrapping copper wire around a ring many many times, but robots can’t/couldn’t thread wire like that to wrap it quickly, so instead of an O they wrap the wire around a U or two C’s and put them together to make an O. This means however there’s a very small gap between parts of the metal the wire is wrapped around, and as the metal core gets magnetised many thousands of times a second, the two cores repeatedly get attracted to each other, clanging together and making the slight humming sound. Further to this if the gap increases the sound might get louder or the frequency change.
Latest Answers