| 1. | Verification regulation of low frequency signal generator
低频信号发生器检定规程 |
| 2. | Verification regulation of super - low frequency signal generator
超低频信号发生器检定规程 |
| 3. | Grading standard of quality for low frequency signal generators
低频信号发生器质量分等标准 |
| 4. | Test methods for general purpose low frequency signal generators
低频信号发生器通用测试方法 |
| 5. | General purpose specification of low frequency signal generators
低频信号发生器通用技术条件 |
| 6. | Low frequency signal generator
低频信号发生器 |
| 7. | Low frequency signal generator
低频信号发生器 |
| 8. | The microprocessor is used to realize digital control as flip plus of the scr . the ic chip sa866ae of mitel company is utilized as the low frequency signal generator of the system . furthermore in the zero - current detection circuit , use the photocoupler gaalas ired and photo ic to detect zero - current , furthest shorten the commutating " died region " , prevent the current from distorting
设计中采用单片机控制可控硅的触发脉冲，实现数字化控制，并利用mitel公司的三相pwm交流电机脉宽调制芯片sa866ae ，成功研制了交-交频器中的低频信号发生器装置，效果良好；此外利用用光电检测元件进行系统零电流的检测，尽可能地缩短换相死区，防止电流发生畸变，成功地解决了原有低频电源系统中存在的两大难题。 |
