Transistor is a semiconductor device used as an amplifier, a circuit breaker and connecting (switching), voltage stabilization, signal modulation or the other function. Such transistors can function electric valve, which is based on its input current (BJT) or input voltage (FET), enabling highly accurate power flux from the source of the electrical circuit.In general, the transistor has three terminals, the base (B), emitter (E) and Kolektot (C). The voltage at the emitter terminal for instance can be used to regulate current and voltage greater than the current input base, ie the output voltage and output current collectors.Transistor is a very important component in modern electronic world. In analog circuits, transistors used in amplifier (amplifier). Analog surround speaker series, a stable power source (stabilizers) and radio signal booster. In digital circuits, transistors are used as high-speed switch. Some of the transistor can also be arranged in such a way that serves as a logic gate, memory and other circuits function.How a transistorOf the many types of modern transistors, initially there are two basic types of transistors, bipolar junction transistor (BJT or bipolar transistor) and field-effect transistor (FET), which each works differently.Bipolar transistor is so named because its main conduction channel uses two polarity of the charge carriers: electrons and holes, to carry electric current. In a BJT, the main electric current must pass through a region / boundary layer called the depletion zone, and the thickness of this layer can be set at high speed in order to regulate the flow of the mainstream.FET (also called a unipolar transistor) using only one type of charge carriers (electrons or holes, depending on the type FET). In the FET, the main electric current flowing in a narrow conduction channel with a depletion zone on either side (compared to the bipolar transistor where the base is cut the main power flow direction). And the thickness of the border can be changed by changing the applied voltage, to change the thickness of the conduction channel. See article for each type for further explanation.
Types of transistors
In general, the transistor can be differentiated based on many categories:
In general, the transistor can be differentiated based on many categories:
PNP P-channel
NPN N-channelBJT JFETTransistor symbols of Various Types• semiconductor materials: Germanium, silicon, gallium arsenide• Physical Packaging: Through Hole Metal, Plastic Through Hole, Surface Mount, IC, etc.• Type: UJT, BJT, JFET, IGFET (MOSFET), IGBT, HBT, MISFET, VMOSFET, MESFET, HEMT, SCR and the development of the transistor IC (Integrated Circuit) and others.• Polarity: NPN or N-channel, PNP or P-channel• Maximum capacity: Low Power, Medium Power, High Power• Maximum operating frequency: Low, Medium, or High Frequency, RF transistors, Microwave, etc.• Applications: Amplifiers, Switches, General Purpose, Audio, High Voltage, etc.
NPN N-channelBJT JFETTransistor symbols of Various Types• semiconductor materials: Germanium, silicon, gallium arsenide• Physical Packaging: Through Hole Metal, Plastic Through Hole, Surface Mount, IC, etc.• Type: UJT, BJT, JFET, IGFET (MOSFET), IGBT, HBT, MISFET, VMOSFET, MESFET, HEMT, SCR and the development of the transistor IC (Integrated Circuit) and others.• Polarity: NPN or N-channel, PNP or P-channel• Maximum capacity: Low Power, Medium Power, High Power• Maximum operating frequency: Low, Medium, or High Frequency, RF transistors, Microwave, etc.• Applications: Amplifiers, Switches, General Purpose, Audio, High Voltage, etc.
|
|
theiyoe
| - |
|
0 komentar:
Posting Komentar