Due to this biasing current, 2N3904 goes to the saturation state and the LED turns ON. ![]() ![]() When the switch is closed, the base of the transistor is biased, and current flows to the base of the transistor. Due to this, 2N3904 remains in the cut-off state and the LED does not glow. And no current flows to the base of the transistor. When the switch is open, the base of the transistor is not biased. Given below is the datasheet of 2N3906 (MMBT3906) in the SOT23 package: Download MMBT3906 transistor datasheet. Doping is the process of adding extra electrons to some of those layers while depleting electrons from others (doped with 'holes' the absence of electrons). Electrical characteristics, current-voltage ratings, and physical dimensions of the 2n3906 transistor are given in detail in this datasheet. ![]() Footprint 3D Model MJE3055 Features DC Current Gain Specified to 10 Amperes High Current Gain Bandwidth Product fT 2. The required resistor value can be easily calculated using Ohm’s law. Pinout of a Transistor Three separate layers of semiconductor material are stacked together to create transistors. Pinout of a Transistor Three separate layers of semiconductor material are stacked together to create transistors. The S9013 is a medium-power NPN transistor used for general purpose switching and amplification. Pinout MJE3055 CAD Model The followings are Footprint and 3D Model of MJE3055. Proper biasing of the base ensures adequate base current to turn ON the transistor.Ī resistor of 220 Ohm is connected between the load(LED) and the collector terminal to protect the LED from overcurrent. The base of the transistor is biased using a 10 K Ohm resistor(R3) in parallel to the 1 K Ohm resistor(R2) plus base-emitter junction resistance(in series). The complete circuit is powered via a 5 V supply. ![]() Moreover, it can also be used for any type of signal amplification and can also be used in Radio and RF applications around 100MHz. In the circuit diagram given above, 2N3904 is used as a switch to turn ON/OFF an LED connected at the collector terminal. 2SC2240 transistor is primarily built for low noise audio applications but it can also be used as a switch and can drive load of upto 100mA.
0 Comments
Leave a Reply. |