Electronic controllers for fans; electronic controllers for air blowers; pulse width modulation (PWM) controllers for fans and motors; electrical controllers for electric motors; electrical regulating apparatus, namely, electrical circuits for regulating voltage and current; electric control devices for energy management; climate control systems consisting of digital thermostats, air conditioning, heating, ventilation and drying control devices for ventilation control; climate control systems consisting of digital thermostats, air conditioning, heating, ventilation and drying control devices for temperature control; harmonic suppression filters for suppressing nth harmonics, where n is greater than 1; uninterruptible switching power supplies; uninterruptible electrical power supplies; voltage regulators; voltage stabilizers; electric power supply, namely, inverter; electric power supply for motors, and power line; electric power line conditioners; electrical inverters for solar electric power; electrical inverters for motors, electric power supply, and fans; electric converters; other machines and apparatus for electric power distribution and control, namely, electrical controllers and tap changers which control power supplies of various network devices; rotary converters; electric phase modifiers; anemometers; electric sensors, other than for medical use; electronic sensors for measuring wind speed, wind pressure and wind volume; wind speed, wind pressure or wind volume measuring devices for use with fans, namely, air flow testers and air flow meters; wind speed, wind pressure or wind volume measuring devices for use with air blowers, namely, air flow testers and air flow meters; wind speed, wind pressure or wind volume measuring devices, namely, air flow testers and air flow meters; electric sensors for measuring speed; shaft encoders, resolvers, inductosyns, and rotational displacement sensors for detecting the positions of rotors and other movable components of a motor; photoelectric digital scales; electrical capacitance digital scale; magnetic scales; electric linear displacement sensors; electric meters and testers for voltage, wattage, current, time, speed, and pressure; solar cell batteries; batteries and dry cells; magnetic meters and testers for voltage, wattage, current, time, speed, and pressure; electric wires and cables; electronic monitors for the remote monitoring of the operation status of electric power supplies and power distribution; electronic monitors for the remote monitoring of the operation status of control machines and apparatus for wind speed testing; telecommunication machines and apparatus, namely, modems, routers, telephones, radios, and televisions; industrial computers; computer programs for operating industrial computers; computer programs for controlling and monitoring operation status of electric power supplies, power distribution or control machines and apparatus; computer programs for controlling and monitoring operation status of measuring or testing machines and instruments; computer programs for displaying and analyzing measurement results provided by measuring or testing machines and instruments; electron tubes; semi-conductor memory units; electronic circuits