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Multimeter How to measure transistor _ multimeter test transistor good or bad diagram

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

Logical Circuit-transistor Transistor

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

(Sticker) transistor knowledge

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

How the transistor works-the most common method I have ever seen

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

Transistor working principle diagram

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 depth Saturation 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

Transistor switch circuit design

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

How to understand the transistor working in the saturation zone in the monolithic computer application

The standard for determining if the transistor is entering the saturation zone is ibxβ> Ic (max), because the analog circuit book in college was written on the condition that the NPN transistor is in the saturated zone is ube>0 ubc>0, but in single-chip microcomputer applications, the general collector is connected to VCC via a resistor, So the base of the voltag

Transistor as a switch to learn

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

How the digital multimeter tests the polarity of the transistor

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

Transistor amplification principle

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

A method to determine if the transistor can amplify the AC signal

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

Basic transistor knowledge

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

Analysis method of PNP 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

How do you understand the three working states of the transistor?

First, from the base bias voltage angle analysis 1, cutoff status: That is, transistor B-pole bias voltage is insufficient, transistor C, e pole no current (or only weak leakage current) through.2, amplification state: Transistor B pole with the appropriate bias voltage, C, e pole is semi-conduction state, then the current according to the B-pole current and magn

Switch: differences between transistor circuit co-set, co-base, and co-shooting

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

Analysis of the Basic transistor amplification circuit

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

How does a transistor work?

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

Modification of NPN transistor amplification simulation parameters

Modification of NPN transistor Amplification Simulation parametersIn the use of Multusim10.1 software for NPN transistor amplification Simulation, the experimental results and calculated results are inconsistent, it took me several days, finally found the reason. In order to let everyone less detours, summed up as follows:The circuit diagram is as follows:known : RBB ' =300ω,β=50, calculated according to th

Two-transistor Circuit replaces IC

Linear Technology ' s recently introduced LTC4300 chip buffers i²c clock and data lines to and from a hot-swappable card. This task was difficult because the IC must work bidirectionally, meaning so can simultaneously and actively drive BO Th sides. However, as is sometimes the case, you can replace a complicated circuit by a simple one without much loss of performance. For example, transistors and resistors replace the entire IC (Figure 1). The circuit handles only the clock signal or only the

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