• The current, power, or energy drawn from a source. Also, the load or process that draws this current, power, or energy.
  • In a field effect transistor, the region into which the majority carriers flow from the source. The output of such a transistor is usually taken from the drain, which is analogous to the collector of a bipolar transistor, or the anode of an electron tube. Also, the electrode attached to this region. Its symbol is D. Also known as drain region, or drain electrode.
  • symbol D

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