A contributor to the magazine commented that he felt some readers do not fully follow articles on an electrical topic due to a lack of understanding of basic electrical theory. In some cases, possibly not even appreciating the difference between voltage and current. Because of this, the editor has asked me to write a short series in an endeavour to improve the reader's knowledge on the subject. Whilst I believe that there will only be a few who will not be able to differentiate between voltage and current it is likely that a high proportion will benefit from some additional information. Given that much of our workshop equipment is electrically powered, this is not unreasonable for a magazine with a mechanical bias.
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