soft mode
5.Then the importance of acoustic study for solid are reviewed. The involved subjects are elastic anisotropism, nonlinear effect. acoustoelectric effect, acoustic velocity and attenuation in glass and superconductor, soft mode in phase transition, higher order elastic constants and high pressure equation of state and so on.
8.According to those formulas to revise expediently decimal values of control registers,a PWM output pulse with suited output frequency,delay time and phase-shifting angle is gained expediently by the TMS320LF2407A Demo module and a C & assembler languages program,in order to achieve a zero-voltage soft-switch operational mode of DC/DC full bridge spot-welding inverter power supply.
9.Following the OOD soft such as C++/VisualC++appearing and development,more and more CAD soft can conquer conventional command mode by keyboard,and that it can execute corresponding com-mands by clicking iconic mode to be convenience,brief,celerity,agility for man-machine conversation,thereby improving work efficiency.
10.The charge pump can operate with soft-start and pulse-skip mode(when output voltage is more than 5V, the oscillator stops surging) to reduce the power loss. Also digital logic control units is used to avoid the burr and reverse current during the switch cutting.
