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| ENGINEERING REVIEW MAGAZINE, ISSUE 3, 2013, MAY |
Within the In Focus section we're continuing the review of the brewing industry in Bulgaria. Over 20 suppliers of products and solutions for beer manufacturers are presented in this issue. The cover topic Power Transformer Protection – Part 2 focuses on the elimination of the effects of unbalance of the currents in the differential protection. Article in Electronics section "Digital Signal Controllers (DSC)" presents the features, structure parameters and typical application areas of DSC. For recent developments in pneumatic actuators you can read in the section on automation of this issue. In the HVAC section we present different types of industrial chillers - compressor, sorption and combined compression-sorption and their characteristics. Among the other topics are "Rotary piston pumps and hydraulic motors," "Polyethylene Water and Sewer Pipes" and "Single point threading on CNC lathes."
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