The application example of MAX192 in the date acquisition to 50Hi ac power supply is explained in detail, including the connection way between MAX192 and microcontroller 89C2051 and the applicable controlling program.
It is significant that the soil erosion of large region is quantificationally predicted and evaluated with the data and model which are applicable in small scale by means of the building of conversion of models in different space scale.
A Ka-band microstrip doubler from 17 34 GHz is designed by using high accuracy dispersion mod- el. The testing results indicate that the design of the microstrip circuit used in mm-wave doubler has obvious virtues of practicality, simplicity and low cost, and it is applicable to engineering. When the input power is 50mW, its output is 2.9mW, the efficiency is 5.8%, and the 3dB bandwidth is more than 1 GHz.
The results shown that the principle of loss separation used consistently is applicable and the bahavior of P/f vs f can be described by using Bertotti's statistical theory in the range of f=0.3～30kHz and B m≤0.8T.
This program is applicable in the following ranges: dimensionless velocity parameterU being from 10-12 to 10-10 , dimensionless load parameter W from 10-5 to 10-3, and the rate of slide to roll S less than 0.1, which, except for S, can involve the practical applications of industry gear drives.