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enhanced P-Channel MOS tube (e.g. SI2333DS) switching conditions when used as a switch, the PMOs tube is controlled by the VGS voltage value to control the continuity between S (source) and D (drain drain). the minimum threshold voltage for the VGS is 0.4v, which means that the source and drain electrodes are on when the S (source) voltage-G (Gate gate) Pole > 0.4V. and VS = Vd, the S-pole voltage is eq

Original address:: Http://www.szhualan.com/pcbtech/sanjiguan. Related web Posts 1.http://www.dzsc.com/data/html/2008-4-3/60806.html Transistor tube type and pin identification is an electronic technology beginner's basic skills, in order to help readers quickly grasp the method of testing, the author summed up four formulas: "Three upside down, find the base pole; Pn Junction, fixed tube type, straight a

I bought a 7-segment LED digital tube with ten pins, but the pins are not on the upper and lower sides, they are on both sides of the left and right. Best reference answer:Use a digital multimeter for pin-by-pin testing. Generally, the 10 pins are 7 segments and two public segments plus one decimal point.The public end is generally in the middle or at the most side, two rows, one row and one symmetric. You can sort other pins by yourself.Assume t

Use the Turtle Graphics library in Python to draw a seven-segment digital tube that shows the current time Code# coding:utf-8# Draw seven segment digital tube, display current time import Timeimport turtle as tt# draw interval def drawgap (): Tt.penup () TT.FD (5) # Draw single segment digital tube def DRA Wline (Draw): Drawgap () if (draw): Tt.pendown () E

http://blog.csdn.net/wang_xuehen/article/details/7895301 First of all, the application of their own background to do a description, I do a system in the power supply part needs two battery switching power supply, so to do an electronic switch, this switch should be as low as possible electricity consumption. General use of electronic switches can be selected transistor, but the transistor voltage drop and leakage current is not acceptable to the system. So it is necessary to use the MoS

Commonly used pipes have steel pipe, steel corrugated pipe, 3 kinds of plastic pipe.The advantages of the steel pipe are easy to install, can be welded in the steel skeleton outside, may replace some of the steel section, and because of the rigidity of the steel pipe. After embedding can basically maintain its parallelism and flatness, many large-diameter cast-in-situ piles are used as pipe for sound measurement. But the price of steel pipe is more expensive:Steel corrugated pipe is a kind of go

Directory1) Problems arise2) failed attempts3) Final Plan4) How to use5) Knowledge sharing 1) Problems ariseIn the previous article "Using PWM control DC motor as an example to build a simple 51 engineering framework " has introduced a packaged 8-bit 8-segment Digital tube driver (such as the led8.c file under the Func folder). But the drive circuit is to have a certain hardware basis (such as): such as 2 pieces of 74hc573. And I only have a few

The resistor is a resistive device with a non-linear volt-ampere characteristic, most of which is protected by voltage circuitry when the circuit is under overvoltage and absorbs excess current to protect the sensitive device. Usually called VDR. The resistor body material of the resistor is a semiconductor, so it is one of the semiconductor resistors.TVS (diodes), also called TVs Tubes , are widely used as a new type of efficient circuit protection device with fast reflection time and very high

#drawsevensegdisplay.pyImportTurtle, DateTimedefDrawLine (Draw):#draw a single-segment digital tubeTurtle.pendown ()ifDrawElseTurtle.penup () turtle.fd (40) Turtle.right (90) defDrawdigit (digit):#Draw seven-segment digital tube based on digitalDrawLine (True)ifDigitinch[2,3,4,5,6,8,9]ElsedrawLine (False) drawLine (True)ifDigitinch[0,1,3,4,5,6,7,8,9]ElsedrawLine (False) drawLine (True)ifDigitinch[0,2,3,5,6,8,9]ElsedrawLine (False) drawLine (True)ifDi

CRT Tube Focusing performance: CRT projector to the input of the source signal decomposition to the R (Red), G (green), B (blue) Three CRT tube on the screen, under high pressure, light-emitting, after the signal amplification and convergence, the large screen display color image. CRT tube Focusing is divided into three kinds of electrostatic focusing, magnetic f

In the beginning of no digital display, the sequence is a matrix keyboard, followed by the digital tube 0~f,6 simultaneously digitally controlled static display.Digital control and Matrix keyboardFirst of all, the selection of the digital tube is closed to let the digital tube display no matter what the number. Then select all the digital

First, the circuit compositionThe regulator circuit composed of Zener diode dz and current limiting resistor R is the simplest DC regulated power supply. Two basic relations can be obtained from the regulator circuit of the regulator tube : Ui=ur+uo Ir=idz+il Voltage Regulator Tube volt-ampere characteristics such as, in the voltage regulator circuit, as long as the regulator is always wor

the semaphore is 0, it enters the waiting queue.After exiting the critical section, use the V operation, the semaphore value plus 1, if the semaphore is also less than or equal to 0, then wake up a process in the waiting queue.II) Achieve condition synchronizationA thread A uses the P operation, a thread B uses the V operation, and the initial semaphore is set to 0. To satisfy a condition, thread A can be executed only after the execution of threads B. This can be achieved easily with semaphore

negative voltage VGS between the grid sources is applied, the two PN junctions in the junction field effect tube are in the inverse state. (b) is shown. with the negative increase of the VGS, the reverse bias voltage added to the PN junction increases, and the depletion layer widens. Because of the low doping concentration of N-channel, the depletion layer is mainly concentrated on the channel side. The depletion layer widens, making the channel narr

#include Well, that's the code. The actual circuit may have 74h or something. However, it is only one person who wants to record his doubts about why it is B0 rather than 0b. Assume that the digital tube is a common anode digital tube, and the number "3" should be displayed ". Digital tube principle A B C D E F G DP in alphabetical order Corresponding Level 0 0

Dynamic planning, in fact, is similar to the division of the law, the basic idea is to divide the complex problem into a number of simple sub-problems, and then to solve. The difference is that the sub-problems concerned by the division and treatment do not overlap each other, while the sub-problems of dynamic planning are overlapping. For example, in the fast sort, we divide the data into two parts, the two parts of the recursive idea of the sorting of the whole problem into sub-problem sub-arr

March 24, Nanning DMV and postal departments, drivers medical institutions first batch of cooperation to open the "Car tube Convenient service network" in the Jin Pu Road Post officially launched, the same day the city at the same time to open the convenience of a total of 21 service outlets.　　In the future, the public only need to go to the nearest "car Tube convenience Service Network" to submit business

(1) using the GPIO port directly control the digital tube using 12 IO ports. In order to reduce the occupied IO port, we used a 74hc595 to drive the digital tube.(2) The 74hc595 chip has a 8-bit shift register and a memory, three-state output function. The shift register and memory have separate clocks. The data is entered into the shift register at the rising edge of the SH_CP (shift register clock input)

LED digital tube is widely used in single-chip microcomputer system, it is composed of light-emitting diode. The digital tube consists of 7 LEDs of a "day" shape, if the need to display the decimal point, then add a point, is a 8-segment digital tube.Digital tube Display high brightness, the corresponding speed, sub-common cathode and common anode two forms, comm

Does not accumulate Kuibu not even thousands of miles, does not accumulate the small flow not to become jianghai. The foundation is not strong, shake. I have no doubt that I will never feel guilty about wasting my time on simple things. Simple things to repeat, you are the expert.Repeat things with your heart and you are the winner. Experiment Static display Y6C is an election, y7c is De Shun.Another particularly important thing is that it is a co-Sun digital