摘要：This paper analyzes and compares the performance of a new inverter topology with two types of input sources: 1) Solar PV source and 2) Ideal dc source (battery). The simulation is done in SIMULINK/MATLAB Software. It is shown that when the solar panel is connected, spikes are obtained in output voltage waveforms. These spikes are eliminated by inserting a capacitor. The capacitor is chosen for a particular power factor which is optimum with respect to cost, size and power quality. Total harmonic Distortion, Active Power, Reactive Power, RMS Voltage and RMS Current are measured for different load power factor. Finally these results are compared with those obtained using battery with same input voltage magnitude. This Paper shows that for Solar Panel Circuit, ThD, P and Q are less for 0.8 and above power factor, however below 0.8 PF, the ThD, active and reactive power transfer are more. This means that the performance of Solar Panel in the proposed circuit topology is seen to be better as compared to the same circuit with battery within a range of power factor.

摘要：A kind of drive circuit which high-power output for stepping motor, based two-phase hybrid stepping motor are designed, achieved. is low power consumption, high-performance and on BY-5064, and a kind of dedicated circuit for drive control for stepping motor with high-power is

摘要：This paper focuses on the use of the touchpad （key）, STC89C51RC monolithic integrated circuit PWM control signal, which changed the traditional mechanical buttons as a DC motor rotational speed and steering control method. Touch switch advantages compared with the traditional mechanical switches are： first, the quieter second, more sensitive; third, faster; four, long life and so on. Specialized chips are also used in the article the PWM signal system, and the principle of PWM signal, method and how the software adjust the duty cycle of the PWM signal to control its input signal waveforms are are described in detail. In addition, this article also introduced consisting of triode amplifier circuit of h-bridge amplifier as a DC motor driving module, enabling the control of DC motor speed. On the software side, PI was described in detail in the article arithmetic program initializes write ideas and specific programs such as program implementation.