Impulse-Peak Measurement by Means of Pulse-Lengthener Circuit With Source Follower

A method of measuring peak voltage of an impulse by a cascaded two-stage pulse-lengthener circuit followed by a source follower is described. The method permits the measurement of the peak voltage of an impulse with a width as narrow as 15 ns. The measurable peak voltage ranges from +1 to +5 V. The 1 percent decay time of the meter reading is about 5 s. The meter can therefore be read without hurry.