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为使日新月异的电子技术和集成电路服务于化学实验教学,使化学实验装置更加科学新颖。现介绍一种适于大学及中学无机化学实验用的“声光指示导电试笔”。它可使溶液的导电实验做得更加简便迅速而生动,使实验更加“有声有色”。制作方法如图示。一、元件及材料1.探测电极:用(?)3.5mm 插头如图1改制。2,6.试笔的壳体:用废圆珠笔壳前半部和普通测电笔粘合而成。用502粘合剂粘合较好。3.(?)5 mm 发光二极管:LED_1为红色,LED_2为绿色。4.JATON—A 型集成块:也可用9300系列或用 LM—M51型集成块。图1中前面一块为压电陶瓷片,剪截方法参见图3,它与剪截
In order to make ever-changing electronic technology and integrated circuits serve chemical experiment teaching, the chemical experiment apparatus is more scientific and novel. An “acoustic-optic indicating conductive test pen” suitable for inorganic chemistry experiments in universities and middle schools is introduced. It can make the conductivity experiment of the solution more simple, rapid, and lively, making the experiment more “awesome”. The production method is as shown in the figure. First, components and materials 1. Detection electrode: Use (?) 3.5mm plug as shown in Figure 1. 2,6. Test case shell: The first half of the waste ballpoint pen case is glued with an ordinary pencil. Adhesion is better with 502 adhesive. 3. (?) 5 mm LED: LED_1 is red, LED_2 is green. 4.JATON-A type integrated block: 9300 series or LM-M51 type integrated block can also be used. The front piece in Fig. 1 is a piezoceramic piece. See Fig. 3 for the cutting method.