Consider a 741 operational amplifier circuit as shown below, where Vec =VEE = +15V and R= 2.2 k2. If v, = 2mV , what is the value of v, with respect to the ground? R -V CC R 741 +V ЕЕ
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Q: Let R1 = 2.40 Ω, R2 = 3.30 Ω, and R3 = 4.20 Ω. I3 is the current through R3 = 4.20 Ω and the 3 =…
A: R1=2.40 ΩR2=3.30 ΩR3=4.20 Ω
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- Consider a series RC circuit as in the figure below for which R = 6.70 MQ, C = 4.70 μF, and E = 25.5 V. C E S + R (a) Find the time constant of the circuit. 31.49 (b) Find the maximum charge on the capacitor after the switch is thrown closed. 1.1985e-4 X What is the current in the circuit when the capacitor has reached its maximum charge? μC (c) Find the current in the resistor 10.0 s after the switch is closed. μAAn oscillator circuit is important to many applications. A simple oscillator circuit can be built by adding a neon gas tube to an RC circuit, as shown in the figure (Figure 1). Gas is normally a good insulator, and the resistance of the gas tube is essentially infinite when the light is off. This allows the capacitor to charge. When the capacitor voltage reaches a value Von, the electric field inside the tube becomes strong enough to ionize the neon gas. Visually, the tube lights with an orange glow. Electrically, the ionization of the gas provides a very-low-resistance path through the tube. The capacitor very rapidly (we can think of it as instantaneously) discharges through the tube and the capacitor voltage drops. When the capacitor voltage has dropped to a value Voff, the electric field inside the tube becomes too weak to sustain the ionization and the neon light turns off. The capacitor then starts to charge again. The capacitor voltage oscillates between Voff, when it starts…Apply the Junction Rule at B to determine the current going through RBC in terms of I1 and I3 .
- the voltage across a component is given by v = V0e-t/CR. Determine the time taken for voltage v to drop from an initial voltage V0 of 150 volts to 100 volts, if C = 5 x10-6 Farads and R = 40 kW.102 C 3. For the circuit at right, find: 102 Paralel (a) The current at pts. A, B, C, D, & E. The power dissipated by each resistor. (c) The power supplied by the battery. (d) The potential differences VB- VA, Vc- VB, VD-Vc, VE-VA. 100 V EQ.1: An RC circuit with a 54.0 V power source is connected to a fluorescent lamp as shown in the Note: Show your work in full to get credit A #: Ac0522odo surc. The lamp L turns on when the voltage across the capacitor reaches 45.0V, which nappens after 0.65 seconds after the switch is closed. If R = 3M2, (a) what is the value oI uhe capacitance C? (b) If we must switch the lamps 3 times in a second, what should be the value of capacitance? (c) What is the charge on the capacitor when the lamp just flashes in both the cases? ). vakue of capacetonce ww R C: 54.0V
- dv + 5v = 10B(t), dt v(0) = 0 %3D For this problem we are just going to look at the equation for the battery. A fully charged battery when connected to the circuit at time zero have a voltage source equation B(t) = 10e-0.5t %3D b. Our battery is off until one second then connects for one second, then is off for one second and does not recharge (it just retains the voltage it had when it was removed from the circuit) and then is turned on for one second, then it turned off for good. Give the function for the battery voltage in the circuit using the Heaviside function and the exponential function. B2(t) =An accumulator with U1=150 V and negligible internal resistance is connected to a voltage divider as shown in the figure. a) How big will the voltage U2 be if no external load is connected? b) How large will U2 be if a load with resistance RL = 2250.0 Ω is connected between A and B? c) How large will U2 be if a load with resistance RL = 9000.0 Ω is connected between A and B? d) How big will the effect be in the load c)?You are given V= 20V and R= 15ohms, and are asked to solve the circuit for I2.