| 摘要 |
<p>A bus system (11) which includes two or more voltage-to-current transformers (10), a common bus (30), a terminal bus (31) coupled to a voltage source (40), two or more first switches (20), and a selection circuit (60). Each of the voltage-to-current transformers converts a voltage signal to a current signal. The common bus carries the current signals from the voltage-to-current transformers to an output bus. Each of the first switches has a first position where an output from one of the voltage-to-current transformers is coupled to the common bus and a second position position where the output is coupled to the terminal bus. The selection circuit is coupled to each of the first switches and controls movement of each of the first switches between the first and second positions.</p> |
