| 摘要 |
A tunnel diode is used as a rectifying device. The tunnel diode is so implemented as to suppress a flow of a current relative to an applied forward voltage of AC which is greater than a voltage at a peak value of a tunnel current. Stated in another word, use is made of a semiconductor of a wide forbidden band width so as to enable the forward turn-on voltage of the diode to be made greater than a maximum value of the applied voltage. Upon application of a reverse voltage to the diode, on the other hand, a greater tunnel current flows from a zero bias time. By connecting the tunnel diode, unlike an ordinary diode, in a reverse-bias fashion in the rectifying circuit, it is possible to realize a rectifying device whose turn-on voltage is zero and to prevent less rectifying efficiency at a power supply circuit of low voltage.
|
