Wish it were that simple but there's more to those than just a transformer. As part of the ferroresonant design, they are partially saturated at all times. Along the same lines, in regulating voltage, amperage can suffer. So... with a dynamic load, they have to be oversized to a larger factor . While the CVT series has better amperage stability and tighter regulation, they're more like autoformers so noise reduction is one third of the MCR and a true isolation transformer.
Don't get me wrong, for decades they have been the 'king of the hill' as far as fast, reliable regulation and only recent, advanced electronic tap switchers can compete for the throne. They're also heavier and expensive, except for that used, $20, 1000W MCR portable I bought once.
Don't get me wrong, for decades they have been the 'king of the hill' as far as fast, reliable regulation and only recent, advanced electronic tap switchers can compete for the throne. They're also heavier and expensive, except for that used, $20, 1000W MCR portable I bought once.