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Single-Shot Capture using the DSO-101 Oscilloscope
Single-Shot Capture using the DSO-101 Oscilloscope

... The relay, Potter-Brumfield type KUP11D55, has a 24VDC, 465Ω coil with DPDT contacts. The power supply E provides the necessary power. Switch S is operated by hand to cause the relay to actuate. Resistor R generates a voltage proportional to the relay current. Full current in the relay corresponds t ...
MFJ ENTERPRISES, INC.
MFJ ENTERPRISES, INC.

... aware of them will help you to achieve more meaningful results. 5.1 SWR Measurements and Local Interference The MFJ-266C (and other hand-helds) use a broadband diode detector that is open to receiving signals across the entire radio spectrum. Most of the time, the unit's built-in stimulus generator ...
Instruction Manual for FrSky Two-Way System
Instruction Manual for FrSky Two-Way System

... to go around solid obstacles is less than older 72 or 36 MHz systems. Also, the antenna patterns are more affected by metallic objects, such as metal parts, servos, ESC’s, battery packs, wires, and carbon fiber structures. If possible, put the tip of the antennas outside of the fuselage for the best ...
Aalborg Universitet
Aalborg Universitet

... the matching level, and that the location of the optimum matching frequency is determined by Ls1 and Cgs1 . In order to obtain an optimum input matching at the desired frequency band, the effects of Ls1 and Cgs1 on the input matching have been studied. Based on Eq. (2), the calculated |S11 | of the ...
Negative Feedback - Learn About Electronics
Negative Feedback - Learn About Electronics

... the signal will normally undergo a phase reversal of 180 degrees between input and output but reactive components such as capacitors and inductors, whether actual components or ‘stray’ capacitance and inductance, can introduce unwanted phase changes at particular (usually high) frequencies. If these ...
TL52055 数据资料 dataSheet 下载
TL52055 数据资料 dataSheet 下载

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
Crown Service Web Site
Crown Service Web Site

... bias resistor, bypassing the output devices, at levels below about 100mW. An RLC network between the predriver and driver provide phase shift compensation and limit driver base current to safe levels. Output devices are biased class B, just below cutoff. At about 100mW output they switch on to condu ...
AD532 - Analog Devices
AD532 - Analog Devices

... scale factor error. To this must be added such application dependent error terms as power supply rejection, commonmode rejection and temperature coefficients (although worst case error over temperature is specified for the AD532S). Total expected error is the rms sum of the individual components bec ...
Data Sheet 85001-0574 -- Genesis Chimes and Chime
Data Sheet 85001-0574 -- Genesis Chimes and Chime

... Genesis horns and horn-strobes. Suggested sound pressure level for each private mode signaling zone used with alert or alarm signals is at least 10 dB above the average ambient sound level, or 5 dB above the maximum sound level having a duration of at least 60 seconds, whichever is greater, measured ...
Data Sheet 85001-0441 -- Bell-Strobe Plate
Data Sheet 85001-0441 -- Bell-Strobe Plate

... dBA, or where the occupants of the floor area use ear protective devices, are located within an audiometric booth, or are located within sound insulating enclosures. This also applies to assembly occupancies in which music and other sounds associated with performances could exceed 100 dBA. Strobes s ...
Monolithic Power Systems, Inc.
Monolithic Power Systems, Inc.

Transmission Scan Instructions Assuming Normal Operation
Transmission Scan Instructions Assuming Normal Operation

Datasheet - Intersil
Datasheet - Intersil

... The Bias Network is responsible for the accurate setting of both LNA and MIXER operating currents. The LNA operating current is accurately set to 5mA while the MIXER is set to 4mA. Laser trimming procedures and a temperature independent performance of the bias cell, assure the worst case operating c ...
INA116 数据资料 dataSheet 下载
INA116 数据资料 dataSheet 下载

... MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases ...
Optimizing efficiency in high frequency tube welding
Optimizing efficiency in high frequency tube welding

5 AEI 5 Automation in Instrumentation
5 AEI 5 Automation in Instrumentation

... TWO PORT NETWORKS: Two port parameters and their interrelations, z-parameters, y-parameters, h-parameters, ABCD parameters. Equivalence of two ports, transformer equivalent, interconnection of two port networks. Image parameters. Attenuation & phase shift in symmetrical T and ...
PGA-102+ - Mini Circuits
PGA-102+ - Mini Circuits

... The PGA-102+ provides good IP3 performance relative to device size and power consumption. The combination of the design and E-PHEMT Structure provides enhanced linearity over a broad frequency range as evidence in the IP3 being typically 15 dB above the P 1dB point. This feature makes this amplifier ...
Design and Performance Analysis of a Series
Design and Performance Analysis of a Series

... the voltage and the current is negative, corresponding to a zero-current switching (ZCS) region, for those higher than f0 the phase difference is positive and corresponds to a zerovoltage switching (ZVS) region. At resonance the current and the voltage are in phase, thus to minimize the reactive pow ...
CMOS Source Resistance and Effects on Source Follower Gain
CMOS Source Resistance and Effects on Source Follower Gain

Predictive-flow-queue based energy
Predictive-flow-queue based energy

line and motor reactance coils for converters
line and motor reactance coils for converters

... of capacitance represented by long cables. The capacitance component of the cable impedance may, with respect to the switching frequency of power transistors in the converter, cause overload on the converter's output, failing to supply the rated current to the load. In addition to suppression of the ...
EM Oscillations and Alternating Curent
EM Oscillations and Alternating Curent

... than that of the resistive load; to increase the transfer of energy from the device to the load, a transformer will be connected between the two. (a) Should Ns be greater than or less than Np? (b) Will that make it a step-up or step-down transformer? ...
A Low-Noise Fully Differential Recycling Folded Cascode Neural
A Low-Noise Fully Differential Recycling Folded Cascode Neural

DLL Considerations in QDRII/DDRII SRAMs
DLL Considerations in QDRII/DDRII SRAMs

... clock is unstable (varying frequency) and the DLL is enabled, then the DLL may lock onto a wrong frequency and this is undesirable. If this is not possible, then the DOFF pin must be used to turn off the DLL. It can be turned it on when the clock becomes stable. In this way, the DLL gets locked onto ...
Amateur Radio Technician Class Element 2 Course
Amateur Radio Technician Class Element 2 Course

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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.
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