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1 . Sketch the waveforms for the load current and voltage for Figure 2-73. Show the peak values.
FIGURE 2-73
3 . Consider the circuit in Figure 2-75.• (a) What type of circuit is this? • (b) What is the total peak secondary voltage? • (c) Find the peak voltage across each half of the secondary. • (d) Sketch the voltage waveform across RL. • (e) What is the peak current through each diode? • (f) What is the PIV for each diode?
FIGURE 2-75
16. To what value must R be adjusted in Figure 2-79 to make IZ = 40 mA? Assume that VZ = 12 V at 30 mA and ZZ = 30Ω.
FIGURE 2-79
17 . Assume the output of a zener regulator circuit drops from 8.0 V with no load to 7.8 V with a 500Ω load. What is the percent load regulation?
18. Each part of Figure 2-84 shows oscilloscope displays of rectifier output voltages. In each case, determine whether or not the rectifier is functioning properly and, if it is not, what is (are) the most likely failure(s). Assume all displays are set for the same time per division.
FIGURE 2-84
The 32X6 ROM, together with the 2^0 line, converts a six-bit binary number to its corresponding two-digit BCD number. For example, binary 100001 converts to 011 0011(decimal 33). Specify the truth table for this ROM.
Through the data sheet the power meter is 4.5 HP. Find the hp range for PH-3A-HG in hp. The power meter measures the power and outputs a 0 - 10 voltage signal. Calculate the conversion factor for converting the voltage output from the sensor into ..
An AC voltage of 240 volts with frequency of 60 Hz is applied to 0.5-H inductor. Assuming that the inductor was pure of ideal (no resistance; inductive reactance only), how much current would flow through it
a motorcycle battery delivers around 10 Volts DC, at an ampacity of about 500 Amps. this voltage goes through ignition (transformer) and it delivers about 30 KV to each spark plug. What is the turn ratio (Ns/Np) and the resulting ampacity on secon..
how to write a VHDL or an ABEL or a Verilog program using Active HDL 6.3 Student Edition or Xilinx Student Edition 6.31 for a generic 3-to-8 binary decoder with active-high inputs and outputs but with only a single enable input.
an electric pencil sharpener is rated 240 mw 6 v is connected to a 9-v battery and a series-dropping resistor rx
Two long parallel wires A and B carry steady currents i a and i b , respectively, in the same direction . The distance between the wires is d. The wires exert forces on each other. Are the forces attractive or repulsive.
Design a system using either a flow diagram or pseudo code that will accept a block of data words encoded as specified in Part 1; then check the parity for each data word and for the block. The system should output each of the 8-bit data words.
A 220 V, 1500 rpm, 11.6 A (armature current) separately excited motor is controlled by a single phase, full wave SCR converter. The armature resistance of the motor is 2 ohm. The ac source voltage is 230 V (rms) 60 Hz.
A (3V, 300mA) flashlight bulb is to be used as the dial light in a 120V radio. What is the resistance of the resistor that should be connected in series with the flashlight bulb to limit the current
Two three-phase loads are y-connected across a 300 Volt three phase line. One load draws 10kW at a p.f. of 0.9 leading, and the second load draws 8kW at a p.f. of 0.6 lagging. V(line-neutral)=300V/sqrt(3)=173.21V
What is the equivalent admittance of the circuit for Z1 = 12, Z2 = 5 - j7, Z3 = 4 + j36 and Z4 = j10 (all in ohms) Note: Z1 and Z3 are in parallel connected to Z2 + Z4 in series, equal Zt || to Z1||Z3
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