Gradient dynamic resistor with backward stepping switch, electronic circuit and independent power source of electric tool
A dynamic resistance and gradient technology, applied in the electrical field, can solve the problems of difficult to use high-power circuits, high cost of resistors, complex and fragile results, and achieve the effects of not easy to burn, long contact life, and long service life.
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[0038] Implementation example 1, such as Figure 1-2 As shown, a gradient dynamic resistor with a retract switch is characterized in that it includes an insulating container G11, a conductive liquid G31, an entity G21, a bottom electrode G51, at least two gradient electrodes U31, U32, U33, U34, and an electromagnetic coil G41, the first node O+ of the controlled path, the second node O- of the controlled path, the first node P+ of the control terminal, the second node P- of the control terminal, and at least two resistors L1, L2, L3, L4 with fixed impedance;
[0039] The insulating container G11 has a stable shape, the shape of the insulating container G11 is cylindrical, the container of the insulating container G11 is cylindrical, the cavity of the insulating container G11 is not prone to shape changes, and the insulating container G11 is a sealed container;
[0040] The conductive liquid G31 is contained in the cavity of the insulating container G11, the volume of the conductive...
Example Embodiment
[0053] Implementation example 2. Modifications are made on the basis of implementation example 1, so that a tilt switch K1 is connected in series between the bottom electrode G51 and the second node O- of the controlled channel to prevent the resistor from being used if it is placed incorrectly.
Example Embodiment
[0054] Implementation example 3, an independent power supply of an electric tool, having the gradient dynamic resistor with the retraction switch described in implementation example 1.
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