| 摘要 |
<p>PURPOSE:To save the energy reducing noise and vibration by a method wherein the results of comparison between the potential equivalent to environmental temperature and the reference potential are input into a saturable reactor circuit within the range of maximum and minimum set up potentials to control the revolution of a blower through the intermediary of this circuit. CONSTITUTION:When the resistance value of a room temperature thermistor 1 is small and the input potential into an amplifier 6 is low, the output from the amplifier 6 attains to high potential inputting the set potential of maximum potential setting circuit 10 into A point of a comparison circuit 13 to provide a reactor circuit 14 with the output potential therefrom making the reactor 14 approach saturation. Resultantly, the load side impedance decreases making a blower 15 operate at the maximum voltage. When the resistance value of the thermistor 1 is increased, the potential of the amplifier circuit 6 and the comparison circuit 13 decreases making the reactor 14 unsaturated and the revolution of the blower 15 decrease down to the minimum revolution determined by the set potential of the minimum voltage setting circuit 9. Through these procedures, the energy of the blower 15 may be saved while reducing noise and vibration.</p> |
