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③做好的可变电容器如图14所示。来回旋转拨动圆形的动片电路板即可改变电容量。当动片的铜箔面全部覆盖在定片铜箔面上时容量最大,当动片的铜箔面全部离开定片铜箔面上方时容量最小。3.自制电感器电感器可以自行绕制。(1)漆包线绕制电感器可用漆包线绕制。自制电感器可用阻值在l00kΩ以上的电阻器作为骨架,用漆包线按要求圈数绕在该电阻器上,如图15所示。
③ make a good capacitor as shown in Figure 14. Turn back and forth to dial the circular movable circuit board to change the capacitance. When the moving piece of copper foil surface covered entirely in the fixed-side copper foil when the capacity of the largest, when the moving piece of copper foil surface all the fixed copper foil surface above the minimum capacity. 3. Homemade inductor inductor can be self-winding system. (1) enameled wire wound inductor available enameled wire wound. Self-made inductor available resistance in l00kΩ resistor above as a skeleton, with enameled wire wound on the required number of turns on the resistor, as shown in Figure 15.