John C Dolph Company 1943 vintage electrical ad air-cooled Synthite

<p>Original 1943 electrical trade vintage ad for <b><span style="font-size: 14px;">JOHN C DOLPH COMPANY.&nbsp;&nbsp;</span></b>Main office and plant was located at 166-8 Emmett Street, Newark, NJ.</p><p> Manufacturers of Insulating Varnishes and Compounds. </p><p>Insulated for 30,000 volts - air-cooled - Synthite PX-5.</p><p>Insulating Transformers like the 8.3 KVA air cooled unit partly completed above provide isolation of circuits having a potential difference of 30,000 volts. This certainly is of interest. To insure non-failing insulation, the manufacturers, Nothelfer Winding Laboratories of Trenton, New Jersey, specified Dolph's Synthite PX-5 Black Baking Varnish for impregnation of all their windings.</p><p> Has product image, descriptions, applications and specifications to provide extensive product details. </p><p>Unbound from a 1943 electrical engineering magazine, this unique old one-page advertisement would display beautifully matted and framed. Nice graphics.&nbsp;World War 2 propaganda. A fabulous addition to your retro electrical library.<br></p>