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图中,A是一块紫外光源示教板,由“220V,24W”的紫外线杀菌灯管按日光灯线路安装后组成。B是锌板,使用时应正对紫外光源放置,光照的表面需用砂纸打光;C是连在高压电源正极的金属板,使用时应使C位于锌板B的侧旁,并使C的板面正对A和B之间的空间区域;D是灵敏度较高的静电计,BD间用导线相连,但D不宜过于靠近C;E是高压电源;F为绝缘性能良好的泡沫塑料垫板。
In the figure, A is a teaching board for a UV light source, which consists of a “220V, 24W” UV germicidal lamp installed on a fluorescent lamp line. B is a zinc plate. When using it, it should be placed on the UV light source. The light surface should be polished with sandpaper. C is a metal plate connected to the positive pole of the high voltage power supply. When using it, C should be placed on the side of the zinc plate B, and make it The board is facing the space area between A and B; D is the electrometer with high sensitivity, BD is connected with wires, but D is not too close to C; E is the high voltage power supply; F is the good insulation foam pad board.