A frequency conversion electron source for 750kV level CVT on -site proving system

The utility model discloses a frequency conversion electron source for 750kV level CVT on -site proving system belongs to the mutual -inductor and detects technical field, when will solve was tested under power frequency voltage, because it is big to be surveyed the capacitive load of capacitance type potential transformer primary winding, a high voltage can be responded to to the primary winding, need remove during the test and once work a telephone switchboard, and still there is the problem of potential safety hazard in troublesome poeration not only, produce unit and power amplification unit including power supply unit, sine wave signal, the power supply unit produces unit and the power supply of power amplification unit to sine wave signal respectively, and sine wave signal produces the unit and passes through output line and power amplification unit connection, 5 volt DC output of power supply unit lie prostrate positive and negative 5 of power inputs end, switch capacitor filter ware to positive 5 of ten digital analog conversion chips respectively and lie prostrate direct -current inputs end and positive 5 volt direct -current input end power supplies on the relay, 28 of power supply unit lies prostrate DC output and lies prostrate the power supply of direct -current input end to power amplifier's positive and negative 28.