multimeter for dummies

VsftpdIs the most popular FTP server program in the Linux release. Vsftpd is a very popular FTP server program. Our new users not only need to understand how to install vsftpd, but also know how to configure vsftpd after it is installed. Configure

In the construction of websites, FTP is an important service and can be used to share limited software resources. The Representative FTP server software in Linux is Wu-FTP, ProFTP and vsftpd. Wu-FTP (Washington University FTP) is an FTP software

If you are a loyal supporter of Windows 2000, you must subconsciously Ctrl + Alt + Del every time you log on to the system, the following simple start tutorial of the classic login mode of Vista will make your Vista journey more friendly and

You can say that those who have never used Linux are talking nonsense about Linux, But I have used Red Hat Linux and feel that there is a big gap between GNOME and KDE and windows. Basically, the essence of Linux is daemon and server. So far, Linux

It is said that ASP can be run on Linux. net, there are a lot of articles on the Internet and in the yard. Even though it seems that a bunch of Linux code is hard to digest, it is so complicated to install only one software. I tried it on Redhat

Today, I took some time to set up the testlink environment. I always felt that this was not very advanced, because QC, Zen Road, and other management tools came with test case management. It seems that many companies are still using it, so you can

I have read many articles about transactions before this article. Most of them are profound and difficult for beginners to understand. Here we will use a very simple example to explain the application of transactions. First, create a temporary table

electronic components is particularly important. This is also a skill that must be mastered by electronic maintenance personnel. I have accumulated some common electronic component testing experience and skills in electrical appliance repair for your reference. 1. Test the polarity of each foot of the rectification Bridge The multimeter sets the R × 1k block. The black table pen is connected to any pin of the bridge heap, and the red table pen test

dimension of the outer tuple is the length of the node list, and the dimension of the inner tuple is the number of the specified key.To modify the properties in the dictionary, we use SetStatus. In the following example, the background current is set to 376.0pA, which is the value that causes the neuron to periodically spike. Nest. SetStatus (Neuron, {"I_e": 376.0}) Note that we can set multiple properties at the same time by giving multiple comma-separated key: value pairs in the

interface on the Linksys WRT54G v2.2 vro motherboard.16.2.1 serial port Probe Next we use the basic observation method and multimeter to find the UART from the complex router motherboard, and determine the purpose of each pin of the UART. Because UART is not standardized, the method demonstrated here is not "universal ". This section uses the Linksys WRT54G v2 vrov2 as an example. There are two serial ports on the main board. Next we will demonstrate

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1 fixed capacitor DetectionA is a small capacitor below 10 PF. Because the capacity of the fixed capacitor below 10 PF is too small, the multimeter can only be used for measurement to check whether there is leakage, internal short circuit or breakdown. During measurement, you can use a multimeter r×10k block, and use two pen to connect two pins of the capacitor separately. The resistance value should be inf

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Before the method of judging the transistor is used by the memory method, that is, as long as the three-level tube series Let it have a face of their own words, from left to right in turn is E-Class B class C. Until one time in the process of using the transistor circuit in a mistake, found that the pipe is always inexplicable conduction, find a good reason for a long time, finally found that the NPN tube has a sequence of e-Class C-Class B. In order to prevent further errors, and then found a v

Protection Board circuit principle and working process1. Schematic diagramSame as the single power-saving core, in the multi-energy-saving core protection circuit, the protection board must also be able to provide overcharge, over-discharge, over-current, short-circuit protection.Dual power-saving core protection board schematic diagramSix, general Protection Board Bad Reason analysis method1, no display (no voltage, charging, no load voltage low): When the battery is found no display, you can

If you can agree that the world is mainly composed of dummies, we should be able to accept the following series of less rigorous Inferences: Things that are fashionable usually belong to the world of dummies; => Non-dummies will certainly do some uncommon things; => To break away from the dummies sequence, you ne

1 People for Wake Power detection In short, it is to connect the computer motherboard 20 pin plug, with a wire (such as a thin wire, the specific people to play the imagination) a green line, a black line (there are 8), if the power supply fan turned on the power is good. With a thin wire to the ATX plug 14 feet ps-on and the other end of the 3rd, 5, 7, 13, 15, 16, 17 feet of any short foot connection, this is the ATX power supply in standby state of artificial wake-up start, when the ps-on si

I. coaxial cable Detection1. After the cable enters the water, we have tested the change of Characteristic Impedance. When the cable enters the water due to moisture and the TV signal passes through the cable, the measured level is lower than the specified loss value of the cable. According to the length of the cable inlet and damp time, the loss attenuation value varies depending on the degree of corrosion and oxidation Rust of the internal and external cables.Under the face of moisture, water

) We often see 7 such as 103,224 of such labels on porcelain capacitors. This does not mean that the capacitance is 103PF or 224PF. Its capacity should be: the first two digits plus the number of "0" represented by the 3rd digit. For example: 103=10*1000=10000pf224=22*10,000=220,000pf=0.22μf2) There is a positive and negative polarity on the electrolytic capacitor, generally there are 8 indicators shown. There is also a common method of identification: The electrolytic capacitance of the non-she