> "Ralph S. Turk" <w7...@...> wrote: > When I worked for Westinghouse Intl in the 60's, we > manufactured a special line of TV's, radios, and small > appliances for DC sections of the world. Our main office > was in New York City and we would get customers from > areas in NYC, SF and some other cities I can not remember > that only had 110VDC available.
A lot of those old tube radios would operate on AC and DC and were often known as 5-tube AC & DC Radios. The tube heaters were all in a series string. cheers, s.
