The circuit in Figure P5.59 models the charging circuit of an electronic camera hash. The flash should be charged to
a. How long does it take the flash to recharge after taking a picture?
b. The shutter button stays closed for 1/30 s. How much energy is delivered to the flash bulb
c. If the shutter button is pressed 3 s after a flash, how much energy is delivered to the bulb
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Principles and Applications of Electrical Engineering
- 5. A voltage source produces a "Triangle" wave and is connected to a series diode and resistor circuit as shown. D1 KH D V1 #1 V R1 R Using the nominal piecewise linear model for a diode, determine from the following possibilities the graph that best represents the voltage across the resistor? (Delete those that do not apply) (Blue curve VR, dashed curve V1). Then determine which graph best represents the voltage across the diode.arrow_forwardIn a phase controlled full wave rectifier, the source voltage is 50 VRMS sinusoidal, the source frequency is 60 Hz and the load is 20 ohms. Since the delay angle in the circuit is 20 °, which of the following is the value of the RMS load voltage? a) 99.54 V b) 49.77 V c) 70.38 V d) 35.19 V e) 23.46 Varrow_forwardc. If a 480 ?F capacitor is added to the output in the figure, calculate the following:i. Vripple.ii. Average voltage, Vdc.iii. Sketch a graph of the input and output voltage against time of the capacitor. (Built-in-potential of silicon = 0.7V)arrow_forward
- The rectifier above drives a 950-Ω load with a peak voltage of 3.15V. For a 100-μF smoothing capacitor, calculate the ripple amplitude if the frequency is 50 Hz. (Assume VD,on = 0.75 V)arrow_forwardCyclic Voltammetry and Charge-discharge The given figure is the Galvanostatic Charge-discharge curves of a supercapacitor made with MnO2 coated on a CNT electrode. Potential is measured with respect to time by applying different current densities. Based on the plot, answer the following questions 4. Is it possible to estimate maximum power of the device with this charge-discharge curve? If possible, explain how you would do it. (calculation is not necessary)arrow_forwardA 60 Hz sinusoidal voltage with an RMS value of 240 V is applied to a single-phase half-wave SCR rectifier. The firing of SCR is delayed by 30 degrees. The RMS voltage at the output of the rectifier would be: O A. None of the other choices are correct O B. 120 O C. 156 V O D. 167 V O E. 281 Varrow_forward
- A single phase – half wave controlled rectifier with freewheeling diode is supplying a load consistingseries connected a resistor and an inductance from a 70.7V (RMS), 50Hz sinusoidal AC source.The firing delay of the thyristor is 90° and the load values are R=10Ω, L=0.1 H. Define the loadcurrent expression and draw the load current by calculating for first two periods. And calculate theaverage values of the load voltage and current.arrow_forwardll SuperNe 4G 3:00 PM C @ 6% Question 9 1 points Save A Power supply circuit is delivering0.5 A and an average voltage 20 V to the load as shown in the circuit below. The ripple voltage of the half wave rectifier is 0.5 V and the diode is represented using constant voltage model. The smoothing capacitor value is equal to I2-Dc 205A 220V omsh 5OHZ O 001 F O 0 02 F O 00167 F O None of the abovearrow_forwardQ1)Design moving coil ammeter as a voltmeter to read 15 V (RMS) alternating voltage. If the internal resistance of the ammeter is 5 KQ , the voltage across the internal resistance is 0.5 v and the resistance of the diodes in the forward direction is 1 KQ, find the multiplier resistance and sensitivity . Assume half wave rectification and a shunt resistance across the meter. The value of the shunt resistance across the ammeter is 2.5 KQ. Q2) Re-design the question above for full wave rectifier (without Rsh)arrow_forward
- Q1)Design moving coil ammeter as a voltmeter to read 15 V (RMS) alternating voltage. If the internal resistance of the ammeter is 5 K2, the voltage across the internal resistance is 0.5 v and the resistance of the diodes in the forward direction is 1 K2, find the multiplier resistance and sensitivity. Assume half wave rectification and a shunt resistance across the meter. The value of the shunt resistance across the ammeter is 2.5 KQ. Q2) Re-design the question above for full wave rectifier (without Rsh)arrow_forwardFor the Zener regulated power supply a shown, the rms value of vI is 15V, the operating frequency is 60Hz, R =100Ω, C =1000μF, the on voltage of diodes D1 and D2 is 0.75V, and the Zener voltage of diode D3 is 15V.(a)What type of rectifier is used in this power supply circuit?(b) What is the dc voltage at V1? (c) What is the dc output voltage VO?(d)What is the magnitude of the ripple voltage at V1? (e) What is the minimum PIV rating for the rectifier diodes? (f) Draw a new version of the circuit that will produce an output voltage of−15 V.arrow_forwardIn the given circuit, (diodes will be considered ideal. a) Draw the V0 output by calculating it according to the input. b) Calculate the average and effective value of the V0 output. c) What are the advantages and disadvantages of using two diodes and two resistors instead of four diodes? Input signal Vm = ± 10V (peak to peak), T = 2π (period), R = 2karrow_forward
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