whats 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 the other two pins are on the voltage display, then

When you solve a user's PC fault, do not forget to use a multimeter to test the power supply. Learn some simple and easy-to-use skills to help you eliminate the possibility of power failure. It may not seem obvious, but more than 1/4 of PC problems are related to power problems to some extent. You may think that if there is a problem with the power supply, the PC will not start up at all, and the culprit will be easily identified. But the problem is

How to use the digital Universal meter to measure the polarity of transistors and the method of NPN, PNP . First of all, say the pointer of the multimeter and the digital multimeter of the red-black pen and the internal battery connection difference;So there are some differences between the two types of tables. Next, just talk about how to use the digital measurements. Use a digital

Original article: Http://drbacchus.com/whats-new-in-openstack-juno/ Http://blog.russellbryant.net/2014/07/07/juno-preview-for-openstack-compute-nova/ Http://blog.flaper87.com/post/juno-preview-glance-marconi/ Https://etherpad.openstack.org/p/MetadataRepository-ArtifactRepositoryAPI Http://git.openstack.org/cgit/openstack/nova-specs/tree/specs/juno/approved Http://redhatstackblog.redhat.com/2014/08/05/juno-updates-security/ Http:

Summary 2--- multimeter measures the voltage of square wave and sine waveThe voltage of the square wave measured by the multimeter is the average and the sine wave is a valid value.The reason is: the multimeter uses the integral ADC, the results are averaged. ... Why is this, check the time, then continue!!---------------------------------------------------------

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

Currently, almost all digital multimeter use dedicated integrated circuits for A/D conversion. Table 1 lists some common number table A/D chip configurations. I. Replacement of the mode/number Converter Currently, almost all digital multimeter use dedicated integrated circuits for A/D conversion. Table 1 lists some common number table A/D chip configurations. Icl7106, icl7126, and icl7136 belong to th

each pin is. The first step in the test is to determine which pin is the base pole. At this point, we take two electrodes (such as the two electrodes are 1, 2), with Avometer two pens to measure its positive and reverse resistance, observe the deflection angle of the needle, and then take 1, 32 electrodes and 2, 32 electrodes, respectively, the reverse measurement of their positive and negative resistance, to observe the angle of the needle deflection. In these three reversal measurements, ther

Method one dials the pointer multimeter to the "rx1k" file, and the ESC is zeroed. The field effect is the same side of the word, from left to right: G (Gate), D (drain), S (source). The Black Watch pen is connected to the D-Pole, the red pen is connected to the S-pole, at this time, the multimeter hands should not move, and then swap the pen, then test, at this time, the

Fluke Networks Fluke Network) recently released a new NetTool II series online network multimeter with the NetProve diagnostic function. It diagnoses Enterprise Network and application connectivity faults four times faster than traditional methods.The newly released NetTool II series has a simple one-step NetProve test function, allowing technicians to quickly and conveniently identify the root cause of the problem regardless of their expertise. The N

Reprinted from: http://wenku.baidu.com/view/899ae713a2161479171128a3.html Note: This document uses the ut60e digital multimeter as an example. 1. When a digital multimeter is used to measure the diode, the positive voltage value of the diode is measured, and the positive and reverse resistance value of the diode is measured. That is, the digital multimeter,

Digital Multimeter is now a very popular electronic measurement tools, because of its ease of use and accuracy by the electronic technology staff's favorite. However, it is often said that when measuring certain components, it is not as convenient as a pointer multimeter, especially when measuring transistors. In fact, I feel a digital multimeter to measure the t

Label:MySQL: @variable vs. variable. Whats the difference? Up vote351down votefavorite 121 In another question I posted someone told me, there is a difference between:@variableAnd:variableIn MySQL. He also mentioned how MSSQL have batch scope and MySQL has session scope. Can someone elaborate on this for me? Add a Comment Up vote445down voteaccepted MySQLHas the concept of u

The following is the structure of the transistor and the various identification methods in the circuit diagram When the multimeter is measured against the transistor (buzzer), we first determine which foot is the B-pole. With a red pen touch any one of the feet, the black pen to contact the other two feet, if you can measure the two groups of similar and less than 1 of the number, indicating that the Red pen contact is the B pole. If the two sets o

Server in SQL 2000, the user can create a custom function, the function return value can be a value, can also be a table. Maybe it's not clear how the custom function works. Previously mentioned in the optimizing database posts, try not to use

The server Microsoft SQL Server 2000 index does not have much change, originally thought will have R-tree, BITMAP index and so on Dongdong come out, the result very let a person lose Hope: ( However, there are some changes, the third one has said

Server in a previous version of SQL Server, the view is not indexed, so the view is generally useless, in addition to occasionally use it to do some authority management to Outside Querying a view and using a connection statement is no different in

Server full-Text search features a number of good improvements to SQL 2000 Full-text search. The first is to be able to update data changes without having to rebuild the Full-text indexing index. You can update the index manually, or you can update

Observe in the same lighting environment and record the following three points:1. the infrared emission diode is visible in the right side of the lens. It has a shape similar to a small cross, and the photosensitive diode is a single point and there

Server New data type After adding four new data types to SQL 7, SQL 2000 provides two new types of data, bigint and sql_variant respectively. In today's increasing volume of data, int ( -2^31 (-2,147,483,648) to 2^31-1 (2,147,483,647)) is used to