Вибір припою, не тест, не огляд

TOPEX 44E512 0.7mm SN60Pb40 SW26/3/2.5% - найкращий припій і товщина. Добре плавиться, чудово лудить і тримається.

LCR-T4 ESR Meter repair

HR7P195FGS3 Vinga UPS repair

After changing the battery UPS transformer don’t switch on, logic don’t power on. Only display works. “IN LINE 600V-200VA II” “11-089400-05” PCB board but also found it as 12-089411-00-1737 / E.11.6300731-04. This PCB board is used on Vinga VPC-1200, Sven UP-L1000E and other UPS. Didn’t find diagram.

I Ching or Book of Changes - change is the only constant

The I Ching, or Book of Changes, is one of the oldest Chinese texts and serves as a manual of divination and philosophy. It has been used for centuries as both a spiritual guide and a means of interpreting the world. Its essence lies in the understanding that life, nature, and all phenomena are governed by dynamic, interdependent, and cyclical change.

The closest model of reality

The closest model of reality at the moment, from the perspective of modern science, is a combination of several theories and frameworks that describe different aspects of reality at various scales. While no single theory perfectly explains everything, the following are the leading models that, together, form our best understanding of reality:

Turtle carrying three elephants supporting Earth

The image of a turtle carrying three elephants on its back, which in turn support the world (often depicted as a flat disk), is a rich symbol that appears in several ancient mythologies, notably in Hindu and Chinese cosmologies. This symbolism is deeply linked to ancient views of the cosmos and the search for stability and foundation.

60-based math - sexagesimal system

The sexagesimal system (base-60), developed by the Sumerians, is a mathematical framework that found its way into many aspects of ancient Mesopotamian culture, especially in astronomy and timekeeping. Interestingly, there are some speculative correlations drawn between this system and the cyclical time frameworks found in Hindu cosmology, including yugas, manvantaras, and kalpas. In both systems, large spans of time are divided into smaller units, and some believe that the base-60 system might offer an explanation for how such large numbers are handled.