August 26, 2013 AT 11:49 am

Funny story about a magnetic core sale back in 1973

Funny story about a magnetic core sale back in 1973.

After I got into examining the sketches I discovered something quite interesting about the power transformer. In all previous designs that I had seen, there was a primary, a base feedback winding and several output windings. What Holt had contrived was a interesting method of assuring excellent coupling of the base winding by using a single strand of wire from a multi-filar bundle that was custom ordered from the wire factory. For example, I think that there was a bundle of 30 strands twisted together, which were all coated in red insulation and one strand of green insulation also twisted together in the bundle, which gave a precise turns ratio together with excellent coupling between the windings.

Related

No Comments

No comments yet.

Sorry, the comment form is closed at this time.