The square wave source is an impulse source in which digital technique is used. It has the advantages of rigid phase, highfrequency stabilization and high antijamming.
方波电源是采用数字技术的脉冲电源，具有相位严格、频率稳定度高，抗干扰能力强等独特的优点。
2
Used in all kinds of direct current, impulse, highfrequency and heavy current occasions, widely used in electric appliance that require high frequency, heavy current and high stability.
各种直流，脉动，高频较大电流场合，广泛应用于要求高频率，高电流，高稳定性的电器。
3
In this paper, a dynamic calibration method using a finite duration impulse excitation source is presented, which can be used to calibrate the frequency response of high-pressure transducers (HPT).