高中物理下册学生实验十“用万用电表判别晶体三极管的管脚并估测β值”,较难做到当堂检查,人人“过关”,并且三极管的管脚常被扭断,损坏率也高。我们作了如下改进,收到了较好的效果:1.将待测三极管焊在底板上。底板可用胶木绝缘板,或用干燥硬纸板;底板尺寸略小于火柴盒抽斗底面的尺寸;底板上钉上三只铜铆钉,以焊牢三 High school physics under the Student Experiment 10 “with multimeter to determine the transistor transistor pin and beta value” is more difficult to do when the church check, everyone “clearance” and the transistor pin is often broken, The damage rate is also high. We made the following improvements, received better results: 1. The transistor under test soldered on the floor. Baseboard available bakelite insulation board, or the use of dry cardboard; floor size slightly smaller than the size of the bottom of the matchbox drawer; the base plate nailing three copper rivets to three