现在新型的录像机一般均带有LP功能,可以用1/2带速录放像,对无LP功能的录像机作如下改进,即可将用LP方式录制的节目带在它上面放像。方法是:将主导轴上测速信号的频率提高一倍,再将此信号输到伺服电路中,使主导电机转速为原来的一半。以富丽1000型放像机为例,主导轴上的测 Now the new VCRs are generally equipped with LP function, you can use 1/2 speed video playback, non-LP-enabled video recorders make the following improvements, you can use the LP mode recorded on the tape with it. The method is to double the frequency of the speed-measuring signal on the capstan, and then transmit this signal to the servo circuit so that the speed of the main motor is half that of the original one. To the magnificent 1000-type player, for example, the main measured on the shaft