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General Discussion
Autoformer? isolation is a 'transformer' Why?
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<blockquote data-quote="marantz123" data-source="post: 1126853" data-attributes="member: 16849"><p>Thats interesting. If I understand correctly the main power supply (240VAC) xformer design is similar to the variable-tapped nature on the (primary) winding of a variac, however in this case a fixed tap , making this an auto transformer ? A single winding which is tapped at some point without any isolation from the main supply...in fact directly connected to the mains supply. If so, there are insulation and isolation specifications for end-user consumer equipment and it would be interesting to know how this design passes consumer safety regulations.</p><p></p><p>Edit : some minutes later : I now realise that the question regards the output stage of the MC152 which seems to have a transformer-coupled output in contrast to other amplifiers with a more conventional directly-coupled design or RC coupled design. Benefits of a transformer-coupled design (if search on www) will have the answers.</p></blockquote><p></p>
[QUOTE="marantz123, post: 1126853, member: 16849"] Thats interesting. If I understand correctly the main power supply (240VAC) xformer design is similar to the variable-tapped nature on the (primary) winding of a variac, however in this case a fixed tap , making this an auto transformer ? A single winding which is tapped at some point without any isolation from the main supply...in fact directly connected to the mains supply. If so, there are insulation and isolation specifications for end-user consumer equipment and it would be interesting to know how this design passes consumer safety regulations. Edit : some minutes later : I now realise that the question regards the output stage of the MC152 which seems to have a transformer-coupled output in contrast to other amplifiers with a more conventional directly-coupled design or RC coupled design. Benefits of a transformer-coupled design (if search on www) will have the answers. [/QUOTE]
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Audio and Video Talk
General Discussion
Autoformer? isolation is a 'transformer' Why?
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