whats multimeter

Principle of stepper motor According to common sense, the wiring of stepper motor depends on the color of the wire. However, the color of the stepping motor produced by different companies is different. Especially foreign stepper motors. Then, the stepper motor wiring should be made with a multimeter. The internal structure of stepper motor is as follows: We can see that ,~ A is connected, B and ~ B is China Unicom. So, a and ~ A is a group of A

layer for handling service-to-service communication. Consists of a control plane and data plane (Service proxies act as "mesh"). -William Morgan, What ' s a Service Mesh? and Why do I Need one? (Https://dzone.com/articles/whats-a-service-mesh-and-why-do-i-need-one) The above statement clearly indicates the responsibility of the service grid, which is to handle communication between services, which is the core of service governance. and a dedicated i

say, 2 is changed to TX, 3 is changed to RX, and the direct connection should be used when connecting to the standard serial port. Check whether the serial port on a development board is a standard serial port or a non-standard serial port. It depends on how the schematic diagram is connected! In general: RS232 DB-9 interface connection line contains three: Public mother, public, Mother. These three connection lines have cross lines and direct connections respectively, so they all have six conn

Figure: General block Diagram (right-click on the New tab to open the picture for a larger view)Figure: Circuit board layoutTest point1. Add the test point to the 4055 to the back level R12. Set the test points R8 and R7 in the 34,712-way output respectivelyCommissioning Process1. Get the PCB template, test the short circuit and the circuit breaker with a Multimeter control plan2. Welding components1. First think about the welding sequence of componen

on the fly line a line of check again. If it's accurate, then you're going to start.(2) When your hardware engineer does not provide you with the hardware board pin specific on the board where the instructions, you must get a patch map.(3) In addition, the regular patch diagram helps to improve the hardware quality of a driver engineer.L Multimeter, oscilloscopeMultimeters and oscilloscopes are essential, and secondly, you may use spectrum analyzers

, and vice versa! As long as you know this, the rest is almost the same as developing the normal output pin.Let's try out a test project first.In the test project, we use the multimeter voltmeter (20V stop) to simulate the 12V chip, that is, the red line of the multimeter, the blue wire, the multimeter black Ground (black lines in the picture). Because the input

three types of connections: Male to female, male to male. Mother to mother. Each of the three connectors has crossover lines and straight lines, so there is a total of 6 connections in the same way.Question 2: How to identify the cross-serial line and direct-connect serial line?Check it with a multimeter. Suppose 2 and 2 pass. The general 3 and 3 are straight serial lines. Assume that the 2 and 3 pass, 3 and 2 general are cross-serial lines.Someone c

interface contains three kinds: male to female, male to male, mother to mother. Each of the three connectors has crossover lines and straight lines, so there is a total of 6 connections in the same way.Question 2: How to identify the cross-serial line and direct-connect serial line?Measured with a multimeter, assuming that the 2 and 2 pass, 3 and 3 are straight serial lines; Assuming that 2 and 3 pass, 3 and 2 are cross-serial lines.Someone confused

bearing and the circuit board data Line (on the right) connection is intact, the circuit board connected to the drive chip between the circuit is smooth. If the bald-headed self-test issued a red light, but do not seek, then look at the control of the bald-headed stepper motor and circuit board connector (right) is connected to the link between the driver chip circuit is smooth. Finally check if the drive chip is damaged. If everything is OK, still do not read the disk, please check the laser

shape of the back of the bald component. The position near the flexible cable below is the bald-head power-regulating potentiometer. 9. For potentiometers to pay attention to the potentiometer has three pins, if the use of multimeter test, of which two pins for 0, we only test the amount of resistance of the two pins of the change in the resistance. Use a multimeter to measure the current resistance of t

Optical Fiber Network Fault Test Equipment Analysis In recent years, as people have higher and higher requirements on the rate of broadband, because the performance of optical fiber is better than that of copper cable, it has been widely used in the backbone construction of broadband projects. At the same time, due to the increasing coverage of optical fibers, fiber failure detection is becoming more and more important. What methods can be used to eliminate faults of Optical Fiber Components? F

current (AC) pass through zero values from negative values to positive values. 18. Power Grid: a power grid is a part of the power system. It is a unified network composed of various substations (sites) and transmission and distribution lines of different voltage levels. 19. Power System: The power system is part of the power system. It consists of generators and power distribution devices in power plants, boost-up and step-down substations, transmission and distribution lines, and electrical e

right) connection is intact, the circuit board connected to the drive chip between the circuit is smooth. If the bald-headed self-test issued a red light, but do not seek, then look at the control of the bald-headed stepper motor and circuit board connector (right) is connected to the link between the driver chip circuit is smooth. Finally check if the drive chip is damaged. If everything is OK, still do not read the disk, please check the laser head to the circuit board is the data line loose

House of QualityIs a digoal, resembling a house,[1] used for defining the relationship betweencustomer desires and the firm/product capabilities.[2]It is a part of theQuality Function Deployment (QFD) and it utilizes aplanning matrix to relate what the customer wants to how a firm (that produces the products) is going to meet those wants. it looks like a House with a "correlation matrix" as its roof,Customer wants versus product features as the main part, competitor evaluation as the porch etc.

-platform version of PowerShell can support Windows , MacOS , CentOS and Ubuntu multiple operating systems, called PowerShell Core , based on. NET Core run. The following links are available for each version of the new Add feature: Windows PowerShell 1.0:https://support.microsoft.com/en-us/help/928439/ Windows-powershell-1.0-installation-package-for-windows-vista. Windows PowerShell 2.0:https://support.microsoft.com/en-us/help/968929/ windows-management-framework-windows-powershell-

JSP 1.1 proposes an extended JSP flag method named "flag library ". These libraries allow other logos similar to jsp: include or jsp: forward, but they are not prefixed with jsp: and some features are also attached.To introduce the flag library, we will use the Blazix flag library as an example in this tutorial. This flag library can only be used on the Blazix server. You can download it for free.Each logstore has its own logstore special documentation. To use the flag library, you can use "tagl

tape to the Start Menu. Primary tile document: https://docs.microsoft.com/en-us/windows/uwp/controls-and-patterns/tiles-and-notifications-primary-tile-apis 3) traceable Tile notification: when a user clicks the Tile, the app can know the content displayed on the current Tile (14393) Document: https://blogs.msdn.microsoft.com/tiles_and_toasts/2016/04/06/chaseable-tiles-know-what-was-clicked-on-your-live-tile-windows-10-uwp/ 4) Context menu in Toast notification (14393) Run the following operat

are some ways to find out how to bypass "your" targetted WAF: 7a) Breaking the SQL statement: To find out exactly whats filtered you need to break your own SQL syntax and check for keywords being filtered, seeing if the keyword is filtered alone or in the prescence of other SQL keywords. for instance, if union + select is giving you a Forbidden or a Internal Server Error, try removing Union and seeing what happens with just Select and vice-versa 7b)

Tag: Otherwise phone div integer distinguishes multiple color else printTitle DescriptionAs we all know, xry111 in hardware is very dwarfish, repair a headset can be the channel welding reverse. Now, xry111 is going to take an n-channel audio cable to deliver the N-channel audio output from the iphone. This line has n signal lines and 1 ground, wherein the ground is in the form of a shielding layer, very good distinction. However, for the n signal line, xry111 feel very headache, dare not feel f

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