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It is required to use a full wave peak bridge rectifier to design a DC power supply that provides an average DC output voltage of 15 V on which a maximum of +/- 1 V ripple is allowed. The rectifier feeds a load of 150 Ω. The rectifier is fed from the line voltage (120 V rms, 60 Hz) through a transformer. The diodes have a 0.7 V drop when conducting (at all currents). a) Specify the rms voltage that must appear across the transformer secondary.
b) Find the required value of the filter capacitor.
Draw waves and circuits.
1. Determine the wavelengths for electromagnetic waves in free space with the following frequencies: 1 kHz, 100 kHz, 1 MHz, 1 GHz. 2. Determine the frequencies for electromagnetic waves in free space with the following wavelengths: 1 cm, 1 m, 10 m..
A radar antenna transmits 50 kW at 10 GHz. Assume transmission is in a narrow beam, 1 m2 in area, and that within the beam, waves are plane waves. The wave is re?ected from an aircraft but only 1 % of the power propagates in the direction of the a..
Develop a series 90-30 program that functions a motor forward/reversed controller. Design your circuit so that the STOP push button must be pressed before the motor can be switched direction
need the coding for the circuits and its a intelligent fan controller based on
If a zener diode has a breakdown voltage of 8[V], find the dielectric strength of the semiconducting material if it is assumed that the entire voltage is dropped across the pn junction, which has width 0.3[μm]. Assume that E is uniform across the ..
The 3phSM is used in a pumped storage application which has a head of 250 m. When pumping or generating, it operates at 84% efficiency, rated stator conditions. Determine the turbine flow when (1) generating and (2) pumping.
Calculate the E-field generated at all points by concentric spheres of surface charge that are centered at the origin. Assume that inner and outer sphers have radii ra and rb and surface charge densities Psa and Psb, respectively.
There are two cylinders containing methane gas and Nitrogen dioxide gas. The volume of these two cylinders re 500cm3 and 700 cm 3 respectively.
In the Wheatstone bridge resistance measurement experiment, if Rx = 4 k-ohm, what would be the expected ohmmeter reading of the potentiometer's resistance
Your circuit has an input, controlled by a switch, that specifies which of the two names are displayed. For example, 0 displays JOsias and 1 displays KAbimb in Braille. A separate LED will be used to indicate the end of the sequence.
A long cable with cylindrical cross-section has inner conductor of radius a and an outer conductor of inner radius b and outer radius c. The dielectric constant of the material between the conductors is 3.
Find the CTFS coefficients of x(t) (using direct calculations), and those of its integral (using CTFS properties). Use the found CTFS coefficients to generate and plot the integral signal of x(t).
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