High quality universal motor factory, universal motor in our daily life is very widely used, simply speaking, the working principle of single-phase AC motor governor is in the motor control loop series into the two-way thyristor, control the thyristor on Angle so as to control the motor terminal voltage.When the external power supply voltage or load fluctuations, speed changes with the motor coaxial connection speed generator output signal by integrator and speed signal is given, the error and the zero passage trigger signal after amplification, the phase shift trigger to realize automatic voltage adjustment, so that the speed stability at a given value, need to change to, just put the motor and reversing joint exchange.
So what's the difference between direct current and alternating current?
Alternating current and direct current have different variation characteristics.Alternating current's current size and direction change periodically over time, and its operating average value is zero within a period. Usually, the waveform is sinusoidal, while direct current does not change periodically.In addition, the ac voltage by transformer to change, but it can't do this, direct current (dc) in long distance power transmission, so we are using alternating current (ac), the main because of cable is very long, the resistance is very big, in the middle will happen a lot of energy loss, so be sure to increase the output voltage, so it can reduce wear and tear.Finally, the high voltage can be converted into a more appropriate voltage through a transformer at the terminal. It is in this way that we will adopt the high-voltage AC transmission mode for large-scale long-distance transmission.
