Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Textbook Question
Chapter 20, Problem 28P
Repeat Problem 27 if the input is reduced to a peak value of 50 mV.
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can you please show working and steps. The answer is 8kohms.
PSD
A certain signal f(t) has the following PSD (assume 12 load):
| Sƒ(w) = π[e¯\w\ + 8(w − 2) + +8(w + 2)]
(a) What is the mean power in the bandwidth w≤ 1 rad/sec?
(b) What is the mean power in the bandwidth 0.99 to 1.01 rad/sec?
(c) What is the mean power in the bandwidth 1.99 to 2.01 rad/sec?
(d) What is the total mean power in (t)?
Pav=
+
2T
SfLw) dw
- SALW)
An AM modulation waveform signal:-
p(t)=(8+4 cos 1000πt + 4 cos 2000πt) cos 10000nt
(a) Sketch the amplitude spectrum of p(t).
(b) Find total power, sideband power and power efficiency.
(c) Find the average power containing of each sideband.
Chapter 20 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 20 - An instrumentation amplifier requires separate...Ch. 20 - Instrumentation amplifiers have excellent...Ch. 20 - The higher the gain of an instrumentation...Ch. 20 - An isolation amplifier is the same as an...Ch. 20 - An isolation amplifier is commonly used in...Ch. 20 - Prob. 6TFQCh. 20 - Prob. 7TFQCh. 20 - Prob. 8TFQCh. 20 - An active limiter circuit uses a diode in the...Ch. 20 - Prob. 10TFQ
Ch. 20 - To make a basic instrumentation amplifier, it...Ch. 20 - Prob. 2STCh. 20 - Prob. 3STCh. 20 - Prob. 4STCh. 20 - Prob. 5STCh. 20 - Prob. 6STCh. 20 - Prob. 7STCh. 20 - Prob. 8STCh. 20 - In an OTA, the transconductance is controlled by...Ch. 20 - Prob. 10STCh. 20 - An OTA is basically a voltage-to-current amplifier...Ch. 20 - Prob. 12STCh. 20 - When the + input of the clamper op-amp is...Ch. 20 - Prob. 14STCh. 20 - Prob. 15STCh. 20 - Determine the voltage gains of op-amps A1 and A2...Ch. 20 - Prob. 2PCh. 20 - Prob. 3PCh. 20 - Prob. 4PCh. 20 - What is the voltage gain of the INA333...Ch. 20 - Determine the approximate bandwidth of the...Ch. 20 - Specify what you must do to change the gain of the...Ch. 20 - Determine the value of RG in Figure 20-46 for a...Ch. 20 - The op-amp in the input stage of a 3656Â KG...Ch. 20 - Determine the total voltage gain of each 3656KG in...Ch. 20 - Specify how you would change the total gain of the...Ch. 20 - Prob. 12PCh. 20 - Specify how you would connect each amplifier in...Ch. 20 - A certain OTA has an input voltage of 10 mV and an...Ch. 20 - A certain CYLA with a transconductance of 5000S...Ch. 20 - The output voltage of a certain OTA with a load...Ch. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - The OTA in Figure 20-49 functions an amplitude...Ch. 20 - Determine the trigger points for the Schmitt...Ch. 20 - Determine the output voltage waveform for the...Ch. 20 - Describe the output waveform of each circuit in...Ch. 20 - Determine the output voltage for the clamping...Ch. 20 - Repeat Problem 23 for the clamping circuit in...Ch. 20 - Describe the output waveform for each circuit in...Ch. 20 - Determine the output waveform for the active...Ch. 20 - Show the output voltage for the zener diode...Ch. 20 - Repeat Problem 27 if the input is reduced to a...Ch. 20 - What is the ideal output voltage for a peak...Ch. 20 - Determine the load current in each circuit of...Ch. 20 - Devise a circuit for remotely sensing temperature...Ch. 20 - Prob. 33PCh. 20 - Open file P20-34 and determine the fault.Ch. 20 - Prob. 35PCh. 20 - Open file P20-36 and determine the fault.
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- Can you rewrite the solution because it is unclear? AM (+) = 8(1+ 0.5 cos 1000kt +0.5 ros 2000ks) = cos 10000 πt. 8 cos wat + 4 cos wit + 4 cos Wat coswet. -Jet jooort J11000 t = 4 e jqooort jgoort +4e + e +e j 12000rt. 12000 kt + e +e jooxt igoo t te (w) = 8ES(W- 100007) + 8IS (W-10000) USBarrow_forwardCan you rewrite the solution because it is unclear? AM (+) = 8(1+0.5 cos 1000kt +0.5 ros 2000 thts) = cos 10000 πt. 8 cos wat + 4 cos wit + 4 cos Wat coswet. J4000 t j11000rt $14+) = 45 jqooort +4e + e + e j 12000rt. 12000 kt + e +e +e Le jsoort -; goon t te +e Dcw> = 885(W- 100007) + 8 IS (W-10000) - USBarrow_forwardCan you rewrite the solution because it is unclear? Q2 AM ①(+) = 8 (1+0.5 cos 1000πt +0.5 ros 2000kt) $4+) = 45 = *cos 10000 πt. 8 cos wat + 4 cosat + 4 cos Wat coswet. j1000016 +4e -j10000πt j11000Rt j gooort -j 9000 πt + e +e j sooort te +e J11000 t + e te j 12000rt. -J12000 kt + с = 8th S(W- 100007) + 8 IS (W-10000) <&(w) = USB -5-5 -4-5-4 b) Pc 2² = 64 PSB = 42 + 4 2 Pt Pc+ PSB = y = Pe c) Puss = PLSB = = 32 4² = 8 w 32+ 8 = × 100% = 140 (1)³×2×2 31 = 20% x 2 = 3w 302 USB 4.5 5 5.6 6 ms Ac = 4 mi = 0.5 mz Ac = 4 ५ M2 = =0.5arrow_forward
- A. Draw the waveform for the following binary sequence using Bipolar RZ, Bipolar NRZ, and Manchester code. Data sequence= (00110100) B. In a binary PCM system, the output signal-to-quantization ratio is to be hold to a minimum of 50 dB. If the message is a single tone with fm-5 kHz. Determine: 1) The number of required levels, and the corresponding output signal-to-quantizing noise ratio. 2) Minimum required system bandwidth.arrow_forwardFind Io using Mesh analysisarrow_forwardFM station of 100 MHz carrier frequency modulated by a 20 kHz sinusoid with an amplitude of 10 volt, so that the peak frequency deviation is 25 kHz determine: 1) The BW of the FM signal. 2) The approximated BW if the modulating signal amplitude is increased to 50 volt. 3) The approximated BW if the modulating signal frequency is increased by 70%. 4) The amplitude of the modulating signal if the BW is 65 kHz.arrow_forward
- An FDM is used to multiplex two groups of signals using AM-SSB, the first group contains 25 speech signals, each has maximum frequency of 4 kHz, the second group contains 15 music signals, each has maximum frequency of 10 kHz. A guard bandwidth of 500 Hz is used bety each two signals and before the first one. 1. Find the BWmultiplexing 2. Find the BWtransmission if the multiplexing signal is modulated using AM-DSB-LC.arrow_forwardAn FM signal with 75 kHz deviation, has an input signal-to-noise ratio of 18 dB, with a modulating frequency of 15 kHz. 1) Find SNRO at demodulator o/p. 2) Find SNRO at demodulator o/p if AM is used with m=0.3. 3) Compare the performance in case 1) and 2).. Hint: for single tone AM-DSB-LC, SNR₁ = (2m²) (4)arrow_forwardFind Va and Vb using Nodal analysisarrow_forward
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