Scientists of Peter the Great St. Petersburg Polytechnic University (SPbPU) developed turbo expander electric generator operating on high-pressure natural gas. Scientists of Peter the Great St.
The automated CNG-EbNo sets and maintains a ratio between a user-supplied carrier and internally generated noise over a range of signal power levels and frequencies. The instrument provides five ...
It's about time to prepare for summer by selecting a home battery or generator that can make sure your air conditioning stays up and running. Batteries and generators provide the same basic service, ...