Suppose that we are designing a cardiac pacemaker circuit The circuit is required to deliver pulses of 1-ms duration to the heart, which can be modeled as a 500-
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Chapter 3 Solutions
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- I need the DC analysis for this circuit, hence IC, IE, IB, VB, VC and VE Assume Beta to be 200, capacitors are open circuits in DC analysis and please make a clear explanation of the mode of operationarrow_forwardCharging a Capacitor: An RC circuit includes a basic switch. In position "a", the battery, resistor and capacitor are connected in series, and the capacitor charges. In position "b", the battery is replaced with a short, and the capacitor will discharge. Two voltmeters and an ammeter have been added to the circuit. F)What is the maximum value of the current after the switch is closed? G) Enter an expression for the current as a function of time. Your answer must explicitly reference the maximum current, Imax, that was determined in the previous step. H) Enter an expression for the voltage measured across the resistor, VR, as a function of time. I) Enter an expression for the voltage measured across the capacitor, VC, as a function of time. J) Add an expression for the sum of the voltages across the resistor and the capacitor as a function of time, VR + VC.arrow_forwardThe pathway for a binary electrical signal between gates in an integrated circuit can be modeled as an RC circuit, as shown in the figure to the right; the voltage source models the transmitting gate, and the capacitor models the receiving gate. Suppose the resistance is 500 ohms and the capacitance is 10^-12 F (1 picofarad, pF. If the capacitor is initially uncharged and the transmitting gate changes instantaneously from 0 to 6 V, how long will it take for the voltage at the receiving gate to reach 5 V?arrow_forward
- You are designing a power supply for a 100 W high-quality audio amplifier that will drive an 8 Ohm speaker. The datasheet says you need approximately a 75 V Vcc rail to properly supply the transistor power stage. To get the excellent performance you expect, you aim for 1% ripple, and choose a design that minimizes the amount of capacitance required to reduce cost. Assume the diode drop is 0.7 V, and the input AC voltage available from a transformer is 75 sin(377t) V. a)How much capacitance do you need (a real-world value in μF) ? b)What is the ripple voltage at 10 W output power? c)What should be the minimum voltage rating of the capacitor(s)?arrow_forwardGive an example of a connected undirected graph that contains at least twelve vertices that contains at least two circuits. Draw that graph labeling the vertices with letters of the alphabet. Determine one spanning tree of that graph and draw it. Determine whether the graph has an Euler circuit. If so, specify the circuit by enumerating the vertices involved. Determine whether the graph has an Hamiltonian circuit path. If so, specify the circuit by enumerating the vertices involved.arrow_forwardWhere do we use SCADA in electrical engineering? Can you please explain the basic principle of it and cite some examples? Please provide answer as long as you want, I'll definitely give a like :)arrow_forward
- Circuit analysis In the circuit below, when the switch is in A position for a long time, it is in position B at t = 0. are brought. For t> 0, the time constant is the value of ? and the voltage across the capacitor. Find the function of change with respect to time. Draw the graph.arrow_forwardIn the circuit shown in Figure 1, find the values of R and C such that the steady-state voltage across the capacitance and the time constant of the response for t> 0 are -10V and 20 seconds respectively. Place all the details of your design.arrow_forwardA piece of electrical component inside a gaming laptop uses a source of electromotive force, resistor, and inductor. If the voltage, resistance, and inductance are 4sin4t volts, 2 ohms, and 1 henry, respectively, what is the current along the circuit after 2 seconds when the initial current applied to the circuit is 0.6 amperes? Assume Kirchhoff's Voltage Law applies which states that travelling around any loop/circuit, the gains and losses of voltage across the elements add up to zero. Do not round off intermediate steps. Round off the final answer to two decimal places.arrow_forward
- Let the first order circuit be shown in the following figure:The switch shown is known to change itsstate from open to closed at time t = 0 and that,once this change has occurred, the circuit reaches thesteady state at approximately 4.5 μs.a) Find the expression for the voltage v (t), for all t> 0, and graph, soapproximate, its behavior as a function of time.b) Find the value of the inductance L.arrow_forwardA 3.0 MΩ resistor and a 1.0 μF capacitor are connected in series with an ideal battery that has an emf E = 5.0 V. After 1.0 s after the initial connection is made, find the rate at which(a) the charge on the capacitor is increasing (inC/s),(b) energy is being stored in the capacitor (inJ/s),(c) thermal energy is appearing in the resistor (inJ/s), and (d) energy is being delivered by the battery (inJ/s).arrow_forwardNow suppose the switch in the circuit in has been inposition b for a long time. At t=0, the switch moves instantaneouslyto position a and stays there. Find the initial and final values of thecapacitor voltage, the time constant for t≥0, and the expression forthe capacitor voltage for t≥0arrow_forward
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