Abstract: The paper describes a gate which is used for singling out one pulse from repe-titive pulses. The main features of the gate are: the height of input pulse withwidth 10ns can be as low as 0.2 V, the rising time and the height of theoutput pulse are 10ns and 20V (on a 50Ω load)respectively; the jitters of the de-lay time of output with respect to input is about 16 ps. The gate can also beused as a synchronizer when it is made to have more than one output