模拟心电信号发生器(见本刊1982年第5期和1983年第3期)只需增添为数不多的元件,就可使其兼作二级梯运动试验的电子节拍器用。经使用,效果良好,有兴趣的读者不仿一试。节拍器的电原理图如附图所示,虚线框内为增添部分,其余均为模拟心电信号发生器原有的。节拍器的主电路由多谐振荡器(BG4、5)和互补式音频 The analog ECG generator (see Issue 5, 1982, No. 3, 1983) adds only a small number of components to an electronic metronome for secondary ladder exercise testing. After use, the effect is good, interested readers do not give it a try. Metronome electrical schematic diagram shown in the figure, the dashed box to add some, the rest are the original analog ECG generator. The metronome’s main circuit consists of multivibrator (BG4,5) and complementary audio