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- The magnitude of the voltage applied to the electrodes of a welding machine can be adjusted in the circuit below. In the range of minimum and maximum value that variable value resistor can take What is the time interval that the capacitor will charge from 0 to 8 V?1. A 2F capacitor is connected in series with a diode and a 60 resistor. The voltage of the battery is 9V. The forward voltage drop of the diode is 0.7V. Flip to close the switch at t=0. Determine the voltage and current of the capacitor at t=0, t=12s, t=24s, and t=36s. (The following table may help you with this question. Feel free to use this table (or not).) Vc VR I R1 60 H Time=0 Time=12s Time=24s Time=36sEXAMPLE + 5V – 0.1uF At the instant the switch makes a contact with terminal a, the voltage across the capacitor is 5V. The 10V b 6V 100k2 switch remains at a for 9 ms then moves to terminal b. How many milliseconds after making contact with terminal a does the opamp 8V -6V saturate?
- For the circuit below, determine the current in each branch and the potential difference in the inductor immediately after switch S isclosed. After a long time the switch S is then opened. What are the currents in each branch and the potential difference in the inductor at that moment?A capacitor of capacity C₁ is charged upto V volt and then connected in parallel to an uncharged capacitor of capacity C₂. The final potential difference across each will be (a) (c) C₂V G₁ + C₂ (1+2) GV G + C₂ (4) (1-²) v (b)In the diagram below, the switch S has been closed for a long time. A) What is the output voltage Vout? What is the charge on the capacitor? b) The switch is opened, so the output voltage increases. What is the time constant that describes the charging of the capacitor in terms of R and C? c) When Vout reaches 10 V, the switch closes and the capacitor begins to discharge. What is the time constant that describes the discharging in terms of R and C? Hint: Apply Kirchhoff's Rules to both loops and the sum of the currents at the junction above the capacitor in the diagram, and use I=dq/dt. If the switch opens when Vout reaches a lower value, say 5V, the capacitor will charge again, and thus one can cycle the voltage with a time constant determined by the circuit: this demonstrates the principle of operation of an electronic timer. 4R S 15 V Vout R
- An alternating voltage is applied to a series circuit consisting of a resistor and iron-cored inductor and a capacitor. The current in the circuit is 0.5 A and the voltages measured are 30 V across the resistor, 48 V across the inductor, 60 V across the resistor and inductor and 90 V across the capacitor. Find (a) the combined copper and iron losses in the inductor (b) the applied voltage.For the circuit at right: a. Immediately after the switch is closed, what is the current in the inductor? 12V b. A long time later, what is the current through the inductor? c. What is the energy stored in the inductor in part (b)? d. A long time later, the switch is opened. Immediately after, what is the voltage across the inductor?switch is in position 2, circuit will discharge the inductor draw the circuit in discharge phase, the equations for v(t) and i(t) of the inductor for the discharge phase, and determine the time constant for the discharge phase
- An alternating voltage is applied to a series circuit consisting of a resistor and iron-cored inductor anda capacitor. The current in the circuit is 0.5 A and the voltages measured are 30 V across the resistor,48 V across the inductor, 60 V across the resistor and inductor and 90 V across the capacitor.Find (a) the combined copper and iron losses in the inductor (b) the applied voltage.Answer: [(a) 3.3 W (b) 56 V] Note: Please provide a clear solution!An alternating voltage is applied to a series circuit consisting of a resistor and iron-cored inductor anda capacitor. The current in the circuit is 0.5 A and the voltages measured are 30 V across the resistor,48 V across the inductor, 60 V across the resistor and inductor and 90 V across the capacitor.Find (a) the combined copper and iron losses in the inductor (b) the applied voltage Answer: [(a) 3.3 W (b) 56 V]When the switch is in position 1, the circuit will charge the capacitor. Find the Thevenin Equivalent Circuit for the charge phase and determine the time constant (Rh*C) for the charge phase.