How to repair the UPS yourself 2017

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How to repair the UPS yourself 2017

ZIP archive from the book about the repair of Uninterruptible Power Supplies (UPS) with the application of the algorithm of troubleshooting in PDF format of high quality.

Additional information

The book contains a description of the three types of UPS used at present. It describes how to quickly perform initial diagnostics of the UPS and identify problems using the attached algorithm. The algorithm for troubleshooting is made in the form of a block diagram, which is very obvious.

It is told how to check the battery, and how to charge it, how to check and "cure" the switching relays (without floating them out of the board).

It is described how the varistor protection of the UPS works, how to properly replace the varistors and fuses.

It tells how the field effect transistors work in the UPS inverter, how they are arranged, how to test them with a multimeter and a test circuit, and how to replace them correctly.

The analysis of work of separate parts of the UPS on an example of the basic schemes is resulted that allows to apply the described algorithm in repair of other models of the UPS. It is told about "thin" and non-obvious faults of UPS, which are not written in articles and books.

The issues of UPS production technology and safety issues in UPS repair are covered (which is rarely written about at all).
It is told about the soldering technique, how to solder, how to check the soldering on the PCB.

Interesting and useful resources of the Internet are provided, which can be used to increase the repairman´s level, firm documentation for electronic components of manufacturers (data sheets).

The book contains many illustrations, photographs and schemes of high quality (which explains the large size of the archive).

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