| 摘要 |
PURPOSE:To economize power consumption while applying voltage applied from a power supply to a coil without waste by mounting a transistor for reducing currents flowing through the coil and a circuit giving rectangular voltage pulses for controlling voltage applied to the coil to a base in the transistor. CONSTITUTION:Voltage at a point G, a point F and a point E is changed into rectangular waves as shown in the figure every time a capacitor 50 repeats the cycles of charging and discharging, and the rectangular waves at E are applied to a terminal 4. When the terminal 4 reaches to low at a time t2, voltage is not applied to a coil 1, energy charged to the coil 1 is discharged by a diode 15, and currents are flowed through the coil 1. When the terminal 4 reaches to high at t3, voltage is applied to the coil 1 again, and voltage rises. When the terminal 4 reaches to low at a time t4, currents applied to the coil 1 begin to reduce again. Since the same process is repeated, currents applied to the coil 1 do not exceed a numerical value required by far, and do not increase. |
