3 ms·
One thing that confused me in this document is how are the traces insulated from the underlying copper sheet ? I definitely don’t have the EE foundations to see
by carterschonwald 8y ago
One thing that confused me in this document is how are the traces insulated from the underlying copper sheet ? I definitely don’t have the EE foundations to see how that isn’t a giant short circuit. Could someone eductate me?
- detaro 8y agoThe pieces glued down are small pieces of circuit board, not just pieces of copper, so the circuit board substrate is always between the copper layers.
- carterschonwald 8y agoAre you sure? In the parent comment that links to the Manhattan style , the figures and photos seems to indicate metal on metal, with glue between the two... what detail or context am I missing?
- detaro 8y agoYes, I am sure. "Copper clad" - board with copper cladding on it. Here's a higher-quality picture taken at an angle from a different article where you can clearly see that it's not massive metal, but fibrous board: https://i0.wp.com/www.pbase.com/daverichards/image/136603883/original.jpg https://i0.wp.com/www.pbase.com/daverichards/image/136603883... (from https://aa7ee.wordpress.com/2011/07/24/the-wbr-a-simple-high-performance-regen-receiver-for-40m-by-n1byt/ https://aa7ee.wordpress.com/2011/07/24/the-wbr-a-simple-high...) EDIT: in the PDF, page 8 also has an image where you can sort-of see it.