• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
nihms
nihms

... for them in the article. As a result of that it takes quite a bit of time to replicate that project with a different set of IR LED and photodiode as the values of the current limiting and biasing resistors may have to be changed for the new sensor to work properly. Today, I am going to talk about a ...
Twin Photobeam Detectors - SECO-LARM
Twin Photobeam Detectors - SECO-LARM

... passing automobile’s headlight. • Do not let sunlight or any direct beam of light enter the sensing spot of the transmitter. If needed, mount so the receiver, not the transmitter, faces the sun. • Do not mount where animals could break the beams. ...
A technique to determine the electromagnetic properties of soil
A technique to determine the electromagnetic properties of soil

... Accurate electromagnetic ground constants are required for many applications including modelling of ground wave propagation of radio signals, calculating clutter and reflection in radar applications, calculating the soil penetration of an electromagnetic wave and modelling antennas above a real, imp ...
Capacitor Applications - HolyStone International
Capacitor Applications - HolyStone International

... Capacitor Applications Capacitor is a basic storage device to store electrical charges and release it as it is required by the circuit. Capacitors are widely used in electronic circuits to perform variety of tasks, such as smoothing, filtering, bypassing etc…. One type of capacitor may not be suitab ...
TGA4532-SM 数据资料DataSheet下载
TGA4532-SM 数据资料DataSheet下载

... example. Can be biased from either pin. Internal grounding; can be grounded or left open on PCB Output, matched to 50 ohms Drain voltage. Bias network is required; see Application Circuit on page 7 as an example. Both pins must be biased. Detector diode output voltage. Varies with RF output power. R ...
A nanomechanical resonator shuttling single electrons at radio
A nanomechanical resonator shuttling single electrons at radio

Document
Document

... We draw the circuit as above, explicitly showing the two latches within FF2. Suppose CK is initially low, L1 is opaque (in the latch mode), and L2 is transparent (in the sense mode). In other words, Q2 has just changed. When CK goes high and L1 begins to sense, the value of Q2 must propagate through ...
DOC
DOC

GEOPHONE SPURIOUS FREQUENCY
GEOPHONE SPURIOUS FREQUENCY

SGM9126 6-Channel, 5th Order, Standard Definition Video Filter
SGM9126 6-Channel, 5th Order, Standard Definition Video Filter

SBB-2082S 数据资料DataSheet下载
SBB-2082S 数据资料DataSheet下载

... require a dropping resistor as compared to typical Darlington amplifiers. The SBB-2082S product is designed for high linearlty 5V gain block applications that require small size and minimal external components. It is internally matched to 50. RFMD can provide various levels of device screening for ...
Lecture 7 Overview
Lecture 7 Overview

... impedance, low output impedance, and differential inputs. • Positive input at the non-inverting input produces positive output, positive input at the inverting input produces negative output. • Can model any amplifier as a "black-box" with a parallel input impedance Rin, and a voltage source with ga ...
NOT FOR NEW DESIGNS
NOT FOR NEW DESIGNS

Is 24-bit better than 16-bit for Data Acquisition Applications
Is 24-bit better than 16-bit for Data Acquisition Applications

... measurements, any instrument using a sigma‐delta ADC type is overly restrictive: its  poor and unpredictable signal fidelity means it cannot be trusted to measure a peak  on any fast edge.  On the other hand, a wideband oscilloscope will suffer from  aliasing if used for FFT measurements.  To overco ...
Dynatel™ 2273 Cable/Fault Locator
Dynatel™ 2273 Cable/Fault Locator

IMEC, Leuven, Belgium, K.U.Leuven, Leuven, Belgium
IMEC, Leuven, Belgium, K.U.Leuven, Leuven, Belgium

... losses. At the same time the suspension can be designed to allow resonance at the main working frequency of the vibration. This approach is favourable for vibrations at higher frequencies with lower amplitudes: resonance converts the small amplitude of the package into an internal motion with a larg ...
TMS3705 Transponder Base Station IC (Rev. D)
TMS3705 Transponder Base Station IC (Rev. D)

AMICSA2016_moon
AMICSA2016_moon

... generate the wanted frequency within the wide-band such as S-band, C-band, and Ku-band. Spacecraft designed to provide communications require the necessity to generate several LO frequencies for various up/down converters in the payload. The conventional technique of frequency multiplying a highly s ...
edexcel hnc/d
edexcel hnc/d

... Another form of signal conditioning is the SIGNAL FILTER. This is used with electric signals to remove unwanted parts of the signal. For example a signal may contain AC and DC signals. A simple capacitor would filter out the DC signal. The signal may contain AC signals of different frequencies. A mo ...
DSM6 Brochure - Australian Monitor
DSM6 Brochure - Australian Monitor

RFVC1842 数据资料DataSheet下载
RFVC1842 数据资料DataSheet下载

... RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric materials and ...
Mobile Controlled Robots for Regulating DC Motors and their
Mobile Controlled Robots for Regulating DC Motors and their

Regulating Pulse Width Modulator
Regulating Pulse Width Modulator

... The reference regulator of the UC1526A is based on a precision band-gap reference, internally trimmed to ±1% accuracy. The circuitry is fully active at supply voltages above +7V, and provides up to 20mA of load current to external circuitry at +5.0V. In systems where additional current is required, ...
Anna University (Syllabus) V Semester (EEE) LINEAR
Anna University (Syllabus) V Semester (EEE) LINEAR

... sine wave with which op-amp can have undistorted output. 20. Define input resistance. Input resistance is defined as the difference input resistance as seen at either of the input terminals with the other terminal connected to ground. For 741 IC, the input resistance value is 2MΩ. 21. Define input c ...
Avcom Satellite/Microwave Accessories
Avcom Satellite/Microwave Accessories

... on IF coax feed lines. Typical applications include, inserting power on RG-59 coax to power a block converter, providing a test point to monitor a tuning voltage carried on a downconverter coax, and using an existing coax cable to carry power for some special purpose such as a relay switching or pol ...
< 1 ... 238 239 240 241 242 243 244 245 246 ... 409 >

Heterodyne



Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report