Consider the circuit of Figure P4.30 in which the switch has been closed for a long time prior to t = 0. Determine the values of v C ( t ) before t = 0 and a long time after t = 0. Also, determine the time constant after the switch opens and expressions for v c ( t ) . Sketch v c ( t ) to scale versus time for − 4 ≤ t ≤ 16 s . Figure P4.30
Consider the circuit of Figure P4.30 in which the switch has been closed for a long time prior to t = 0. Determine the values of v C ( t ) before t = 0 and a long time after t = 0. Also, determine the time constant after the switch opens and expressions for v c ( t ) . Sketch v c ( t ) to scale versus time for − 4 ≤ t ≤ 16 s . Figure P4.30
Solution Summary: The diagram shows the voltage across the capacitor v_C(t) before and after t=0, and the time constant for the circuit is 4s
Consider the circuit of Figure P4.30 in which the switch has been closed for a long time prior to t = 0. Determine the values of
v
C
(
t
)
before t = 0 and a long time after t = 0. Also, determine the time constant after the switch opens and expressions for
v
c
(
t
)
. Sketch
v
c
(
t
)
to scale versus time for
−
4
≤
t
≤
16
s
.
Add a second start button to the basic circuit so Start Button 1 or Start Button 2 can be used to start a motor. Include a second stop button that is connected so that Stop Button 1 or Start Button 2 can be used to stop the motor.
Circuit Logic. Match each statement to the proper circuit. All circuits have been drawn with a light (L) to represent the load, whether it is a motor, bell, or any other kind of load. In addition, each switch is illustrated as a pushbutton whether it is a maintained switch, momentary switch, pushbutton, switch-on target, or any other type of switch.
from electrical motor controls for integrated systems workbook 2014 chapter 5
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