Figure 37. Input and output pulses for a highpass,
shorttimeconstant, series RL circuit
c. At 10 usec, the applied voltage reaches the maximum value of
10 volts and remains constant for 30 usec. The rate of current
change remains the same until ER is equal to E. ER is considered to
be equal to E after 11 usec. The output voltage EL decreases to zero
and remains at zero during the remainder of the input pulse duration
period.
d. At 40 usec, the applied voltage begins to decay and the
inductor opposes any change in current flow. At 41 usec, the applied
voltage has decreased to 9.5 volts and the voltage drop across the
coil is considered to be equal to the amount of decrease in the
applied voltage (0.5 volt) but is opposite in polarity.
73
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