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In the process of developing a high power inverter utilizing S.C.R.'s in high voltage D.C. bridges, it became apparent that the commutator circuit would determine the inverter size and weight. Therefore, we developed a single co mutator circuit that was capable of commutating multiple bridges. Using similar reasoning we felt that the commutator should be as conservative of power as possible. These...
The self-healing fuse is a very fast acting current overload protective device which opens and recloses in a few milliseconds. The fuse confines a mercury column in an insulated channel and returns the mercury to the channel after firing. Ratings 5 to 50 amperes at 600 peak volts are possible with a life of hundreds of cycles. Compared to conventional fuses, much less fault current energy fires the...
USAMERDCs development efforts have been directed toward compact and efficient power supplies in order to cut the weight and bulk of power conditioning equipment presently used. In this effort, weight reduction has been achieved at the cost of considerable equipment complexity and possible difficulties concerning field serviceability by semi-skilled personnel. This complexity is mainly due to the restrictions...