Find the unknown quantities indicated in Figure 1. (ANS: 10V) 2 V 20 V 3 6 V igure
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- What is CEMF?Given the zener voltage at 9V and the zener power at 1W, what is the range of allowable values of Iz (operating values). a) 0.11A b) 22mA to 89mA c) 9A d) 0.11A to 9AQ2\ Determine the range of values of R₁ and I₁, that will maintain the zener diode of figure below in the on state, and determine the maximum wattage rating at the zener diode. R = 240 f www V₁60 v o- V₂=8v RL IZM = 50 mA
- 1. The no-load terminal voltage of a battery is 30 V. The terminal voltage drops to 22 V when supplying a current of 5 A. Determine the emf and the internal resistance of this battery. Ans. r= 1.6 ohm 2. Two identical zinc carbon batteries are available. When connected in series, they supply 0.5 A to a 4 ohm resistor. When connected in parallel, they supply 0.4 A to a 5 ohm resistor. Determine the emf and internal resistance of each battery. Ans. 2.667 V and 3.333 ohm 3. When supplying a current of 5 A, the terminal voltage of a battery is 15 V. The battery is then recharged at a rate of 3 A and the terminal voltage is found to be 21 V. Determine the emf and the Internal resistance of the battery. Ans. 18.75 V and 0.75 ohm 4. A battery with an emf of 12 V and an internal resistance of 0.8 ohm is to be recharged through a 20 V source. (a) show by means of a diagram the connection of the circuit elements. (b) What is the current in the circuit? (c) The recharging current is to be…What will be the negative peak voltage (in V) of the circuit below if the diode Vth is 1.45 V (answer in 2 decimal place). Express your answer in V. No units required. VIN 5V Vm -SV 3V |H M RL O ODetermine the range of V₁ that will maintain V₁ at 8V and not exceed the maximum power rating of the Zener diode. Given Rs is 88ohms and RL is 0.24 kohms. . ܫܩܦܢ V₂ o PZ man Rs V₂=8V = 400 mW R₂
- The resistors you can use in the shown below circuit have a maximum power dissipation level of 1W. If the diode has an absolute maximum rating of 1A, and can be modelled with a diode drop of 0.7 V. The maximum output voltage of the variable supply (VIN) is 14 V. What is the minimum value of resistance (R1) that can be used in this circuit? FT Vin R1 Voutq5 A certain voltage doubler has 20 V rms on its input. What is the output voltage? Draw the circuit, indicating the output terminals and PIV rating for the diode.Question 1: For the circuit below, the Zener diode has Vzo = 5 V, Vz = 5.1 V and rz = 20 Q. Consider R = 1 k2. a- Check if the Zener diode in this circuit is ON or OFF. Explain b- Calculate the current Iz. c- Calculate the resistance R1. d- Calculate the power consumed by the Zener diode. + V, Vo Vs 20 V R1 RL
- Determine the range of V; that will maintain V1 at 10 V and not exceed the maximum power rating of the Zener diode. 912 Vz =10 V Pzmar = 400 mW VL 220 2 máxIn the figure below, calculate the following (use the second diode approximation): Np: N₂ 6:1 Vp 120 Vac 60 Hz (a) Vs (b) Vout(pk) (c) Vdc rü D₁ D₂ Vout R₁-2000) (d) IL (e) PIV of the diodes (f) fout5V 3000 1000 . 2m 1 Si 4000 500 12V The circuit shown in Figure 1 contains a Si diode with a diode resistance on 1000. Use the piecewise linear model to solve the circuit. • How many nodes are in the circuit? • Determine the Thevenin voltage across the diode. Replace the diode with the appropriate model and then solve the circuit to determine the power dissipated by each resistor and the diode.