Low frequency signal generator adopts single chip microcomputer waveform synthesis generator to produce high precision and low distortion sine wave voltage, which can be used to calibrate frequency relay, synchronous relay, etc., and can also be used as low frequency variable frequency power supply. A signal generator of low frequency function is designed based on single chip microcomputer. Signal generator adopts digital waveform synthesis technology, through the combination of hardware circuit and software program, can output custom waveform, such as sine wave, square wave, triangle wave and other arbitrary waveform.
The principle of waveform generation, hardware circuit and software design are introduced.The hardware circuit and software programming to control D/A converter to produce said signal, DAC0832 are introduced
The principle and application of D/A converter, AT89C52 and various chips related to the design circuit, and the design scheme of signal source generating different low-frequency signals.
The signal generator has the advantages of small size, low price, stable performance and complete functions
◆ Direct reading, accurate, stable performance, easy operation
◆Low frequency signal is generated by single chip microcomputer waveform synthesis generator to produce high precision and low distortion sine wave voltage, which can be used for frequency relay calibration, synchronous relay, etc., and can also be used as low frequency variable frequency power supply
◆ Output sine waveform with frequency from 0~100HZ
◆ Waveform distortion 0.5%
◆ 0 ~ 50V Voltage output range 0~50V
◆ Rated output power is 50VA
◆ Voltage measurement accuracy 0.5% full range
◆ Frequency measurement accuracy 0.05%
◆ Power 220V±10%
◆ Working environment temperature: 0~40°
◆ Relative humidity: 80%