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A simple relaxation oscillator circuit is shown in Fig. 7.137. The neon lamp fires when its voltage reaches 75 V and turns off when its voltage drops to 30 V. Its resistance is 120 Ω when on and infinitely high when off.
(a) For how long is the lamp on each time the capacitor discharges?
(b) What is the time interval between light flashes?
Derive the transfer function for a system with an function u(t) and an ouput function x(t) described by the following differential equation:d^3x/dt^3+5d^2x/dt^2+17dx/dt+13=d^2u/dt^2+5du/dt+6
An ideal transformer is used for maximum power match of a 2880Ohm load to a source with a Thevenin Equivalent of 18 V and 20Ohms. (a) If the transformer primary has 140turns, how many turns are needed for the secondary
Electrical Engineers work for the full time and to fulfil the requirement, they do overtime. Though the overtime for an Electrical Engineer is worthwhile and sometimes it is given with additional benefits.
A copper wire has a resistance of 2.00 ohms at 20 degreesCelsius, what is it's resistance at 70 degreesCelsius
about power supply that cnanges ac to dc voltage and which a zener diode on it jst need most the calculations of
A chopper controlled electric train is powered from a 1500 VDE supply. The power semi- conductor switch element hasaminimum effectice ON time of 40 Ms. during starting and slowspeed running, the output of the chopper has to go as low as 15 V.
Two infinite grounded parallel conducting planes are separated by a distance d. A point charge q is placed between the planes.
Economic formulas are available to compute annual payments for loans. Suppose that you borrow an amount of money P and agree to repay it in n annual payments at an interest rate of i. The formula to compute the annual payment A is
Controlling interest rates is an example of
The silicon cube you were shown consisted of 4x4x4 unit cells. You were shown one dopant in the silicon cube. Given that the lattice constant of silicon is 0.543 nm. Calculate the dopant density represented by the 4x4x4 silicon cube simulation.
Consider the penetration of a step potential function of height 2.4 eV by an electron whose energy is 2.1 eV. Determine the relative probability of finding the electron at the distance (a) 12 A beyond the barrier, and (b) 48 A beyond the barrier
1)how would two 50μF capacitors be connected to provide atotal capacitance 100μF. 2) Determine the total capacitance and maximum voltage rating for two 220μF, 300-V capacitors connected in series.
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