Speed adjusting switch for electrical tool
A technology of speed regulating switch and power tool, which is applied in the direction of AC motor control, electrical components, control system, etc., can solve the problem of few routes for improving or adding functions, and achieves the effect of simple structure, changing conduction angle and convenient operation.
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[0011] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0012] figure 1 It is a schematic diagram of the structure of the present invention, which includes a switch S, a rectifier diode V, a resistor R, a potentiometer RP, a capacitor C, a single-phase series-excited motor M, and a gold thyristor VSCR. The switch S and the single-phase series-excited motor M One end is connected to the power supply voltage U, the other end of the switch S and the single-phase series-excited motor M is connected to a rectifier diode V, a resistor R, a potentiometer RP and a capacitor C, and the other end of the switch S and the single-phase series-excited motor M is connected to a gold gate Tube VSCR, and the gold thyristor VSCR is...
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