Transformer noise is caused by the repeated expansion and contraction of the transformer's steel core. The technical term for this is ‘magnetostriction’. The magnetic fields are generated by alternating current, and take on a wave pattern, following the rhythmic pattern of the current. The expansion of the core is dependent upon the quantity of flux which, in turn, is dependent on the applied voltage and the number of windings on the transformer coils. The magnetic flux passing through the transformer core continually fluctuates, so that the core expands and contracts. This results in the humming sound.
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| Cookie | Provider | Purpose | Expiry |
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| _clck | erea.be | ||
| _clsk | erea.be | Registers statistical data on users' behaviour on the website. Used for internal analytics by the website operator. | 1 Day |
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These are used to improve the browsing experience and optimise the operation of the shop.
| Cookie | Provider | Purpose | Expiry |
|---|---|---|---|
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| lang | linkedin.com | Necessary for maintaining language-settings across subpages on the website. | SESSION |
| lidc | linkedin.com | Registers which server-cluster is serving the visitor. This is used in context with load balancing, in order to optimize user experience. | 1 day |
| twk_idm_key | erea.be | Allows the website to recoqnise the visitor, in order to optimize the chat-box functionality. | Session |
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