A protection circuit for detecting high pressure is struck sparks

The utility model discloses a protection circuit for detecting high pressure is struck sparks, its characterized in that: the protection circuit be equipped with current transformer T1 at high voltage power supply's output, current transformer T1 inserts amplitude limiting driver N1 through sampling circuit, the signal is struck sparks through the wide pulse signal of back -porch delay circuit time delay back output to the output of amplitude limiting driver N1 to realize the high -pressure mesh of striking sparks and detecting. Since the above structure is adopted, the utility model discloses realize the high -pressure purpose of striking sparks and detecting with lower cost, reduced digital circuit to the complexity that the analog circuit level varies and designs simultaneously, improved the reliability of protection circuit.