26-09-2016, 03:12 PM
That film showed some of the wonderful GR conenctors. These are hermaphrodite, the plug is idenntical to the socket. https://en.wikipedia.org/wiki/GR_connector
One question that's often asked is "Why don't we use trasnmission line matching for the mains or other power supplies?" There is a clue in Gryphon's mention of high power RF connections. We don't want to to lose half the power at the sending end. So we use a low impedance source. The load impedance determines the current that is drawn. For most purposes transmission line effects are negligible at 50 or 60Hz. The wavelength of 50Hz is 6000km so it only matters on the very longest lines which have plnety of other problems. Some of these are solved by using DC rather than AC.
One question that's often asked is "Why don't we use trasnmission line matching for the mains or other power supplies?" There is a clue in Gryphon's mention of high power RF connections. We don't want to to lose half the power at the sending end. So we use a low impedance source. The load impedance determines the current that is drawn. For most purposes transmission line effects are negligible at 50 or 60Hz. The wavelength of 50Hz is 6000km so it only matters on the very longest lines which have plnety of other problems. Some of these are solved by using DC rather than AC.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
