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二、独立式脉冲电源这类独立式脉冲电源中又按末级功率级起开关作用的电子元件不同而分为闸流管或电子管式及可控硅或晶体管式的。后两者为低阻抗开关元件,可直接用以导通或切断电火花间隙的电压及电流而形成脉冲,而前两者,闸流管、电子管为高阻抗开关元件,因此主回路中常为高电压、小电流(数千伏1安以下),必须采用脉冲变压器将此高电压、小电流的电脉冲变为低电压、大电流的电脉冲,才能用于电火花加工,而这一脉冲
Second, the free-standing pulse power supply of these types of independent pulse power in turn by the last level of power switching function of the electronic components are divided into different parts of the thyratron or tube and SCR or transistor type. The latter two are low impedance switching elements that can be directly used to turn on or off the voltage and current of the spark gap to form a pulse. The former two, thyristor and electron tube are high-impedance switching elements, so the main loop is often high Voltage, small current (thousands of volts and less than 1 amp), you must use a pulse transformer to the high voltage, low current electrical pulse into a low voltage, high current electrical pulse, can be used for EDM, and this pulse