The function of the teaching experiment box mainly includes signal extraction, samll impedance measurement, white noise measuremnet and sound speed measurement from strong noise with teaching videos and teaching handouts supporting. The teaching contents include weak siganl detection experiment under strong noise, micro-voltage signal harmonic measurement experiment, micro impedance measurement experiment, resistance thermal noise measurement experiment, bioimpedance measurement, such as human body resistance and skin resistance measurement experiment, chemistry Applications such as multi-electrode chemical impedance analyzers.
1. Small impedance measurement in milliohm level which can be extended to the chemical impedance and bio-impedance measurement experiment.
2. Extracting signal from strong noise when the noise is one thousand or even ten thousand times the signal.
3. The varactor diode junction capacitance variation under different bias.
4. Micro-level square wave of the harmonic amplitude detection.
5. Resistance of white noise at room temperature measurement and theoretical verification.