What is 2n3904 transistor?
2N3904 transistor is a bipolar negative positive negative (NPN) transistor, which means it is usually usable on negative ground circuits. It can be used for audio signals and for applications for medium speed switching. This small transistor is the counterpart of the 2N3906 transistor, which is a positive negative-positive (PNP) transistor. By injection of a small basic current to the 2N3904 transistor, a larger collector's current can be created. The emitter and collector are the main terminals of the transistor 2N3904. Depending on the circuit configuration, the load -bearing load or load may be connected to either the emitter or with the collector. For current profit 100, change by 0.001 ampere (a) in the results of the basic current change 0.1A on the collector. This suggests how the 2N3904 transistor can become amplifier. A small change in the basic current leads to a hundred times to change the current of the collector, which can be reflected in a change in voltage or power. By designing transistor phases in the cascade it is possible to build for various applications amplifiedVače, switches and oscillators.
The prestress refers to the idle currents on the transistor terminals. In general, 2N3904 transistor requires the base emitter forward, which means that there is a positive potential on the base with reference to the emitter. It should be noted that the base is a positive (p) type of material, while the emitor is a negative (n) type of material. The amount of forward distortion must be controlled depending on the specific application. Too much forward distortion usually causes an excessive collector's current, which usually leads to saturation.
When there is a reverse distortion at the base intersection, the collector current is usually almost zero. This leads to a limitation or state that occurs when the collector current is almost zero. When switching and applications to the frequency frequency frequency, operations near the limit for closing the load on the collector are used. For radiofrequency applications uIt allows operation near the "pulse" limit value known as the perimeter of the tank, which resonates similarly to the way the pendulum swings swings when the nudging is given.