Flip-flops and latches are fundamental building blocks of digital electronics systems used in computers, communications, and many other types of systems, with to transistor you can make simple memory so you can store 0 or 1 because you can switch it on-of very fast you can put several latches (flip flops ) together make a register and several registers together make the ram. It is the basic storage element in sequential logic. The circuit can be made to change state by signals applied to one or more control inputs and will have one or two outputs. Now we need to close the circuit, which means current flow means electron go throw three junctions to allow current flow, the first player well give its ball (electron) to the second player (holes) and the second player give the ball to the third player (electron) the third player will give the ball to wire and the wire will give the ball to a battery to complete the circuitĨ00px-Transistor_Bistable_interactive_animated-en.svg 800×769 53 KBįlip-flop or latch is a circuit that has two stable states. So you can consider there are three boys playing ball the first will be N-type electrons the second will be P-type holes the third is N-type and the electron is the ball. Hundreds of bipolar junction transistors can be made in one circuit at a very low cost. Diffused transistors, along with other components, are elements of integrated circuits for analog and digital functions. The superior predictability and performance of junction transistors soon displaced the original point-contact transistor.

The junctions can be made in several different ways, such as changing the doping of the semiconductor material as it is grown, by depositing metal pellets to form alloy junctions, or by such methods as diffusion of n-type and p-type doping substances into the crystal. A bipolar transistor allows a small current injected at one of its terminals to control a much larger current flowing between two other terminals, making the device capable of amplification or switching.īJTs use two junctions between two semiconductor types, n-type and p-type, which are regions in a single crystal of material. In contrast, a unipolar transistor, such as a field-effect transistor, uses only one kind of charge carrier. the junctions of the bipolar transistor can be biased in one of three different ways – Common Base, Common Emitter and Common Collector use both electrons and electron holes as charge carriers. The most commonly used transistor configuration is the NPN Transistor. An NPN (Negative-Positive-Negative) type and a PNP (Positive-Negative-Positive) type. What if close the tap 5 times from (base) the current will stop flowing 5 times too so your signal will get amplified by the same form such as audio devices and speakers.īipolar Transistor or BJT comes in two basic forms. The same happened in electrical current when you apply a small current it can be 1uA you will get a high current from the collector to the emitter can be 100mA so you amplified the signal.

Bipolar transistor project