Due to this biasing current, 2N3904 goes to the saturation state and the LED turns ON. PINNING PIN DESCRIPTION 1 collector 2 base 3 emitter Fig.1 Simplified outline (TO-92 SOT54) and symbol. 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. Web epitaxial planar npn transistor, 2n3904 datasheet, 2n3904 circuit, 2n3904 data sheet : Check part details, parametric. Web 2N3904 Is Complementary To 2N3906 Pnp Bipolar Junction.
It is a small signal transistor with a maximum. When the switch is open, the base of the transistor is not biased. Web view and download the latest multicomp 2n3904 transistors pdf datasheet including technical specifications. The required resistor value can be easily calculated using Ohm’s law. Datasheet: 2N3906 Datasheet (PDF) ECAD Model: Download the free Library Loader to convert this file for your ECAD Tool. 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.
In the circuit diagram given above, 2N3904 is used as a switch to turn ON/OFF an LED connected at the collector terminal.
0 kommentar(er)
