Impact tester

An impact tester relates to an apparatus instrument, and is stable and accurate in value display; the impact tester comprises a pulse width inhibition circuit and a peak value inhibition circuit; the pulse width inhibition circuit and the peak value inhibition circuit are connected; the peak value inhibition circuit comprises a pulse width definition circuit, a subwave inhibition circuit, a threshold comparison circuit and a peak value holding circuit; the pulse width definition circuit is connected with the subwave inhibition circuit; the subwave inhibition circuit, the threshold comparison circuit and the peak value holding circuit are connected in sequence; the peak value holding circuit is respectively connected with a voltagemeter and a nixie tube digit display. The impact tester employs the dual-peak value holding circuit and the threshold comparison circuit, so the pulse peak value and pulse width data can be updated only when certain proportion of the peak value is reached, thus effectively inhibiting