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Re: importance of Clean power
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<blockquote data-quote="chrisc" data-source="post: 931327" data-attributes="member: 746"><p>An isolation transformer will do just that - isolate the device from the mains. However, it will still send all the spurious voltages to the secondary winding. It is simply a transformer with two identical windings in close proximity to one another, allowing induction to do the work</p><p></p><p>Some positive filtering is necessary, as is in this filter module. There are 2 X-class capacitors (blue and yellow blocks) which absorb high-frequency noise, a toroid wound in clockwise for positive and anti-clockwise for neutral, several MOV (metal oxide varistors)(blue round devices) which will to some extent, clamp voltage spikes above say 265 VAC. Then you have a series of coils, connected in series. These will remove low-frequency interference</p><p></p><p>The MOVs are connected between live and neutral and live and earth</p><p></p><p>Also bear in mind that the MOVs will be useless after about 2 years or sooner and should be replaced. These are very cheap, typically under R10,00 and readily available</p><p></p><p></p><p><a href="https://postimages.org/" target="_blank"><img src="https://i.postimg.cc/htHPHdkg/Capture.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="chrisc, post: 931327, member: 746"] An isolation transformer will do just that - isolate the device from the mains. However, it will still send all the spurious voltages to the secondary winding. It is simply a transformer with two identical windings in close proximity to one another, allowing induction to do the work Some positive filtering is necessary, as is in this filter module. There are 2 X-class capacitors (blue and yellow blocks) which absorb high-frequency noise, a toroid wound in clockwise for positive and anti-clockwise for neutral, several MOV (metal oxide varistors)(blue round devices) which will to some extent, clamp voltage spikes above say 265 VAC. Then you have a series of coils, connected in series. These will remove low-frequency interference The MOVs are connected between live and neutral and live and earth Also bear in mind that the MOVs will be useless after about 2 years or sooner and should be replaced. These are very cheap, typically under R10,00 and readily available [url=https://postimages.org/][IMG]https://i.postimg.cc/htHPHdkg/Capture.jpg[/IMG][/url] [/QUOTE]
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Re: importance of Clean power
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