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盒式录音机中有的快速录音功能,其电机为12V双速电机。笔者遇到几例12V单速电机损坏,一时又买不到。于是将闲置的双速12V电机加了两个元件代替单速电机。方法为:双速电机接线端“+”、“-”端接12V直流电的正、负极,A、B两端用一只100Ω电阻和一只4.7kΩ的可变电阻串联起来。在录音机中放入
Some cassette recorders in the fast recording function, the motor is 12V two-speed motor. I encountered several cases of 12V single-speed motor damage, sometimes can not buy. So the idle two-speed 12V motor plus two components instead of single-speed motor. The method is as follows: Two-speed motor terminals “+” and “-” are connected to the positive and negative terminals of 12V DC. A and B are connected in series by a 100Ω resistor and a 4.7kΩ variable resistor. Put in the recorder