A semiconductor device which conducts electric current run in one direction only. This is the simplest kind of semiconductor device, it has two terminals and a single PN junction. One diode can be used as a half-wave rectifier or four as a full-wave rectifier. electron tube, evacuated glass or metal envelope containing two electrodes, a cathode and an anode. It is used as a rectifier and as a detector in electronic circuits such as radio …showed first 75 words of 563 total…

…showed last 75 words of 563 total…flow, which we will use here, rather than electron current flow. Those facts allow us to describe a current generator circuit by its function: a current source would supply current from its positive output terminal to a load, which is, in turn, connected to a negative terminal. A current sink would draw current to its negative terminal through a load, which would be connected to a positive source. A current pump could perform either function.