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如果你有一台能接收调频波段的收录机,不妨动手制作一个无线话筒,可给你的生活增添不少乐趣。图1就是一台简单易做的无线话筒。元器件介绍(1)晶体管V_1为3DG 201、9011或9013三极管;V_2为9018或3DG 6C三极管,β值均要求大于100。(2)电阻器R_1～R_4均为RTX-1/8 W型碳膜电阻器。(3)电容器C_1、C_2用CD11-10V型电解电容器;C_3～C_5用CC 1型瓷片电容器。(4)电感器L需要自制,用φ0.51mm漆包线在圆珠笔芯(约φ4 mm)上,间绕5匝,然后脱胎取下。
If you have a receiver that can receive the FM band, you might as well create a wireless microphone to add a lot of fun to your life. Figure 1 is a simple and easy to do wireless microphone. Components Introduction (1) transistor V_1 3DG 201, 9011 or 9013 transistor; V_2 9018 or 3DG 6C transistor, β values are required to be greater than 100. (2) Resistors R_1 to R_4 are RTX-1/8 W type carbon film resistors. (3) CD11-10V electrolytic capacitors for capacitors C_1 and C_2, and CC1 ceramic capacitors for C_3 to C_5. (4) Inductor L need self-made, with φ0.51mm enameled wire in the ball-point pen core (about φ4 mm), around 5 turns, and then removed.