Figure 33. Input and output pulses for a highpass,
shorttimeconstant, series RC circuit
b. At 10 usec, the applied voltage reaches the maximum value of
10 volts and remains constant for the next 30 usec. Since there is
only a small difference between E and Ec, the capacitor quickly
charges to 10 volts. This increase in Ec to a value equal to E
causes the output voltage and current to decrease to zero and to
remain at zero during the remainder of the duration period of the
input pulse.
c. At 40 usec, the applied voltage begins to decay. Current
begins to flow in a direction opposite to the original current flow.
This results in a negative output voltage across the resistor.
Again, because of the shorttime constant, the rate
65
Previous Page
