Downloaded from https://www.everyspec.com MIL-STD-1311D d. Pulse characteristics. The pulse characteristics shall be as specified on the TSS. (See figure 2 .) FIGURE 2. General pulse characteristics. e. Pulse amplitude. The pulse amplitude is the maximum value of a smooth curve through the average of the fluctuations of the top portion of the pulse, exclusive of spike. The amplitude shall be averaged over a time equal to at least 25 percent of the pulse width. f. Reservoir. A storage device inside the tube electrically heated for maintaining the correct gas pressure during the operating life. g. Spike.
A spike is a transient of duration less than 10 percent of pulse width during which the amplitude appreciably exceeds the average amplitude of the pulse. h. Duration of spike. The time interval between the instants when the spike departs from and returns to the main-wave shape. i. Spike amplitude. The total excursion of the spike from the main-wave shape. j. Resonant charging conditions. The resonant charging rate is the rate of charging (achieved with inductive charging) such that the voltage applied to the anode reaches its peak before the pulse.
This condition exists when the prr is equal to twice the natural resonant frequency of the charging-choke inductance in combination with the PFN capacity. k. Peak anode current (ib). The peak current is the amplitude of the current pulse at the 100 percent point. (See figure 2 .) l. Rate of rise of pulse anode current (dik/dt). The rate of rise of pulse current is the ratio of the current change to the time of rise for that portion of the pulse. m. RMS anode current (Ip). For hydrogen thyratron applications Ib x ib Ip = n. Time jitter (tj) (see method 3261). The pulse to pulse variation in anode firing time as referenced to the grid signal.
(In multigrid tubes the grid shall be that which receives the last pulse.) o. Mean anode current (Ib). The average value of anode current. p. Unloaded grid pulse. The voltage pulse applied to the grid socket terminal with the tube removed. 8