恒流源（文献翻译）.doc

恒流源
电流源是电气或电子装置，可提供或吸收电流。一个电流源是一个电压源双。术语恒流源有时用来从一个负电压电源馈来源。
CURRENT SOURCE
A current source is an electrical or electronic device that delivers or absorbs electric current. A current source is the dual of a voltage source. The term constant-current sink is sometimes used for sources fed from a negative voltage supply. Figure 1 shows a schematic for an ideal current source driving a resistor load.