The water boiling alarm circuit introduced in many magazines generally uses
he electronic switch shown in the figure is composed of a NAND gate,
By using a certain process to fabricate two PN junctions on a semiconductor substrate
Reverse saturation current/CBO between collector and base.
A woman uses a black probe to connect to one pin and a red probe to connect to the other two pins.
The three electrodes of a transistor can be identified not only by a multimeter,
