A dual-gate semiconductor structure including a first polysilicon layer that has a p-type region and an n-type region. The isolated power supply circuit includes: a transformer circuit, a power switch circuit, a control circuit, and a discharge circuit. The magnet is embedded in the intermediate portion or one of the jaws. At least one saturated power amplifier is provided for each of the at least one constant amplitude, phase modulated drive signals. QoS information corresponding to the received service quality identifier is determined and used to generate a radio link between the mobile equipment and a mobile communication network. A non-combustion, hydraulic power generated compression based central heating and cogeneration system is presented as what is new in the art.