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A mixer is used in a short-wave superheterodyne receiver. The receiver is designed to receive transmitted signals between 5 MHz and 25 MHz. High-side tuning is to be used. Determine the tuning range and tuning ratio of the local oscillator if the IF frequency is 400 kHz and 2 MHz, respectively.
One way to measure TC is a square wave generator having a frequency of about 1/10 of the inverse of the time constant. Assuming I apply a voltage of 1 volt across a capacitor of 1uF, and a resistor of 1k
You have a shortwave AM receiver (just an AM receiver that has the capability to receive signals in the FM frequency band) that receives an NBFM voice signal at some carrier frequency. You notice, however, that while the signal strength is maximiz..
how big will be capacitance connected on series with resistor R=30 omega in AC circuit with input voltage U1 = (200+2*17) V and frequency 50 Hz if the power factor is 0.7
a radio antenna operating at 1.5 MHz has an input impedance of 6+j226 ohms. A capacitor is connected in series with it for tunning purposes. compute the valur of capacitance needed to tune the antenna to resonance.
The system works as follows. When the main program starts to run, the microprocessor commands the A/D to convert. The microprocessor then sits in a dummy loop until the A/D interrupts, after it has completed the conversion and data is available.
What are the design implications for the location and positioning of solar cells? Explain why the use of solar cells might be more appropriate in some regions of the country.
The battery is made by connecting 5 unit cells in series and then by connecting 7 of these series cells in parallel. Each unit cell has the voltage of 1.25 V and the internal resistance if 3.4 Ohm.
1. What is the difference between On-delay and Off-delay timer instructions 2. How are timer instructions reset What happens when an On-delay timer reaches its preset delay time
Suppose two points P1 and P2 are tossed at random and independently onto a line segment of length L. What is the probability that the absolute distance between the two points does not exceed l.
Given the DSP system, where the sampling rate of 4000 Hz is used, the anti-aliasing filter is the Butterworth filter with a cut-off frequency of 200 Hz, and the percentage of aliasing level at the cut- off frequency is required to be less than 10%
In animation programs, special effects are achieved by changing the properties of objects. What instruction is used to change the opacity and color properties of objects in the Zeus example world?
Will a 12VDC power supply capable of delivering 1 amp be able to power this heater (resistor). Use Ohm's law to show whether or not the power supply will be able to deliver the required current.
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