transistor guide

First, the multimeter to the test diode end, with the multimeter of the Red pen to one of the transistor's pin, and the other side of the multimeter to test the remaining pins, until the following results are tested: 1, if the transistor's black form pen to connect one of the pins, and the Red Watch pen to test the other two pins are on the voltage display, then this transistor is PNP transistor, and the b

Transistor The transistor is a great progress after the relay, a semiconductor device used to control the current, the role of the transistor is like a micro-Current Control Switch From the collector to the emission pole, a large current can be used to generate a small current from the base pole to control the large current of the collector to the emission pole

". In fact, in the saturated area, that is, the polar electric Junction is positive, also has not reached the pole electrical junction of the positive guide voltage. However, ordinary people will be "biased" misleading.2, the meaning of saturation: The collector current increases with the base current increases, when the collector current increases to a certain extent, and then increase the base current, the collector current is no longer with the inc

Structure and type of Transistor Crystal transistor is one of the basic components of semiconductors and is the core component of electronic circuits. The transistor is made on a semiconductor substrate to form two close Pn knot, two The PN junction divides the positive semiconductor into three parts. The middle part is the base zone, and the two parts are the e

Operating principle of Transistor Transistor PrincipleTo understand the effect of transistor amplification, remember that energy will not be generated for no reason, so the transistor will not produce energy ,. However, the most amazing thing about the transistor is that it

good stuff. How transistors work Transistor is a current amplification device, there are three poles, respectively, called Collector C, base B, emission pole E. Divided into NPN and PnP two kinds.We only use the NPN transistor's common emitter amplification circuit as an example to illustrate the fundamentals of the transistor amplification circuit. first, the current amplification The following analysis

Transistor Saturation Problem Summary:1. In practical work, the common ib*β=v/r is used as the condition for judging the critical saturation. According to the IB value calculated by IB*Β=V/R, only the transistor enters the initial saturation, in fact should take the value of more than a few times to achieve true saturation, the larger the multiplier, the deeper the saturation .2. The larger the collector re

The following mainly through the use of NPN transistor switching circuit design, PNP transistor switching circuit similar to NPN.First, the transistor switch circuit design feasibility and necessity Feasibility: The person who used the transistor is clear, transistor has a c

Transistor as a switch, is the transistor working in the saturation zone, the NPN transistor as an example (all of the following) As shown in the figure: when the vin=0, transistor b-e There is no forward bias, and cutoff, equivalent to the state of disconnection, at this time vce=vcc,c pole current ic=0; When the

Digital multimeter test and the pointer multimeter is different, then how to test the polarity of the transistor with a digital multimeter. First, the multimeter to the test diode end, with the multimeter of the Red pen to one of the transistor's pin, and the other side of the multimeter to test the remaining pins, until the following results are tested: 1, if the transistor's black form pen to connect one of the pins, and the Red Watch pen to test

I. Current amplification principle of TransistorTransistor (hereinafter referred to as Transistor) has two kinds of materials: GE tube and silicon tube. However, each type has two structure modes, the two most commonly used are silicon, the special transistor, and the special transistor, which have different power polarity, the working principle is the same. The

The following content, excerpt in the network, and then summarized, in order to deepen the impression, all the text and schematic are done by themselves.determine if the transistor amplification circuit has a way to amplify the AC signal:There are three basic configurations of transistor amplification circuit: Co-injection set circuit, common collector circuit, common base circuit. Regardless of which appli

I. Basic Concepts Its main function isCurrent Amplification(Analog circuit) andSwitchFunction (digital circuit ). A transistor is composed of two PN knots, and a shared electrode becomes the base pole of the transistor (represented by B ). The other two electrodes are the collector (in C) and the emission pole (in E ). Due to different combinations, a transistor

Many textbooks introduce the analysis method of NPN transistor, but for the PNP type transistor, the analytical method is similar to that of the former. How a similar law, but not detailed description. The following is an introduction to the PNP type three-tube analysis method: We know that NPN transistors have three working areas (cutoff area, amplification area, saturation zone), and the same PNP

A common set, a common basis, or a common shot refers to a circuit, which is the connection state of a transistor circuit rather than a transistor. The so-called "Total" refers to the total part of the input and output circuits. It is determined by the AC equivalent circuit.Common collector circuit-the collector grounding of the transistor. the Collector is the p

The transistor is a current amplifier, which has three poles, namely the collector C, the Base B, and the emission pole E. It can be divided into two types. The basic principle of the transistor amplifier circuit is described in this example. The following analysis is only applicable to the silicon transistor. As shown in, we call the current from base B to the

Operating principle of TransistorThe transistor is a current amplifier, which has three poles, namely the collector C, the Base B, and the emission pole E. It can be divided into two types. The basic principle of the transistor amplifier circuit is described in this example.I. Current AmplificationThe following analysis is only applicable to the silicon transistor