08310024, 08210001, 08110046
... smaller than desired, but by using a small inductance there is little or no reactive component and an additional PFC capacitor is not needed. The results can be better than expected, but the overall power factor is generally limited to around 0.7 ‐ it's po ...
... smaller than desired, but by using a small inductance there is little or no reactive component and an additional PFC capacitor is not needed. The results can be better than expected, but the overall power factor is generally limited to around 0.7 ‐ it's po ...
EE2003 Circuit Theory
... • Amplitude and phase difference are two principal concerns in the study of voltage and current sinusoids. • Phasor will be defined from the cosine function in all our proceeding study. If a voltage or current expression is in the form of a sine, it will be changed to a cosine by subtracting from th ...
... • Amplitude and phase difference are two principal concerns in the study of voltage and current sinusoids. • Phasor will be defined from the cosine function in all our proceeding study. If a voltage or current expression is in the form of a sine, it will be changed to a cosine by subtracting from th ...
AD7763 数据手册DataSheet下载
... speed with the benefits of Σ-Δ conversion, as well as performance of 107 dB SNR at 625 kSPS, making it ideal for high speed data acquisition. A wide dynamic range, combined with significantly reduced antialiasing requirements, simplifies the design process. An integrated buffer to drive the referenc ...
... speed with the benefits of Σ-Δ conversion, as well as performance of 107 dB SNR at 625 kSPS, making it ideal for high speed data acquisition. A wide dynamic range, combined with significantly reduced antialiasing requirements, simplifies the design process. An integrated buffer to drive the referenc ...
Tempo and beat analysis of acoustic musical signals
... music signals. His description does not directly address the equivalent processing of signals without drums, but it seems that the required musical knowledge base would be much more difficult to acquire. N. P. Todd’s work ~Todd, 1994! has described algorithms which detect onsets in monophonic music ...
... music signals. His description does not directly address the equivalent processing of signals without drums, but it seems that the required musical knowledge base would be much more difficult to acquire. N. P. Todd’s work ~Todd, 1994! has described algorithms which detect onsets in monophonic music ...
Microwave Circuit Design: A Practical Approach
... prerequisite knowledge of circuit theory, electronic circuits, and electromagnetics, which are usually covered in mandatory courses at the undergraduate level. Numerous books have been published on the subject of active microwave circuit design. However, many of these works do not present the hands- ...
... prerequisite knowledge of circuit theory, electronic circuits, and electromagnetics, which are usually covered in mandatory courses at the undergraduate level. Numerous books have been published on the subject of active microwave circuit design. However, many of these works do not present the hands- ...
TRANSMISSION LINES
... Typical examples of such structures are transmission lines and waveguides. Waveguides are discussed in the next chapter; transmission lines are considered in this chapter. Transmission lines are commonly used in power distribution (at low frequencies) and in communications (at high frequencies). Var ...
... Typical examples of such structures are transmission lines and waveguides. Waveguides are discussed in the next chapter; transmission lines are considered in this chapter. Transmission lines are commonly used in power distribution (at low frequencies) and in communications (at high frequencies). Var ...
3 Abbreviations, Acronyms, AND definitions
... requirements of analog terminal performance. The recommended on-hook requirements are written with a model of 5 CPE attached to the CI and the minimum performance requirements are based on a model of 3 CPE. Several performance measurement procedures are established today, each of which yields standa ...
... requirements of analog terminal performance. The recommended on-hook requirements are written with a model of 5 CPE attached to the CI and the minimum performance requirements are based on a model of 3 CPE. Several performance measurement procedures are established today, each of which yields standa ...
EMI / EMC
... Generally this is an expensive way to protect the sensitive part of the system, and it takes space. It works well for higher frequencies. For clock frequencies or edge rates lower than 100 MHz, EMI is coupled from the clock signal onto the shield and the shield itself does the radiating. In this cas ...
... Generally this is an expensive way to protect the sensitive part of the system, and it takes space. It works well for higher frequencies. For clock frequencies or edge rates lower than 100 MHz, EMI is coupled from the clock signal onto the shield and the shield itself does the radiating. In this cas ...
Analog Input Buffer Architectures
... The op-amp topology used in the input buffer shown in Figure 3 addresses two issues. First, it provides an extremely low output impedance and therefore minimizes the amount of distortion presented to the converters internal sampling circuits. By placing the 91 Ω resistor in the feedback loop, it’s r ...
... The op-amp topology used in the input buffer shown in Figure 3 addresses two issues. First, it provides an extremely low output impedance and therefore minimizes the amount of distortion presented to the converters internal sampling circuits. By placing the 91 Ω resistor in the feedback loop, it’s r ...
Eine 100 Watt Endstufe
... amplifier PC board next to amplifier output (J3) to allow the installation of a single-band low-pass filter between the terminals of J3 and K1’s input, J4. This is handy if you intend to use the amplifier on one band only. The input inductor of the low-pass filter connects from J3 to the single PC t ...
... amplifier PC board next to amplifier output (J3) to allow the installation of a single-band low-pass filter between the terminals of J3 and K1’s input, J4. This is handy if you intend to use the amplifier on one band only. The input inductor of the low-pass filter connects from J3 to the single PC t ...
Direct Printing of Circuit Boards Using Aerosol Jet
... which are typically printed at the same time as the interconnects. The second layer is the conductive ink that is printed over the landing pads. The COTS are manually placed on the landing pads while the ink is still wet and the parts are bonded as the ink cures. An additional layer of non-conductiv ...
... which are typically printed at the same time as the interconnects. The second layer is the conductive ink that is printed over the landing pads. The COTS are manually placed on the landing pads while the ink is still wet and the parts are bonded as the ink cures. An additional layer of non-conductiv ...
AN 224: High-Speed Board Layout Guidelines
... ground plane as possible. This technique will couple the transmission line tightly to the ground plane and help decouple it from adjacent signals. Use differential routing techniques where possible, especially for critical nets (i.e., match the lengths as well as the gyrations that each trace goes t ...
... ground plane as possible. This technique will couple the transmission line tightly to the ground plane and help decouple it from adjacent signals. Use differential routing techniques where possible, especially for critical nets (i.e., match the lengths as well as the gyrations that each trace goes t ...
similarities to that of an electromagnetic guitar pickup
... The pickup coil consists of two distributed components that are rather easy to measure with a fairly good degree of accuracy (about +/- 1%) and these are the internal resistance (R Int.) and the internal Inductance (L Int.), and these can be shown as lumped components in the Thevenin Equivalent cir ...
... The pickup coil consists of two distributed components that are rather easy to measure with a fairly good degree of accuracy (about +/- 1%) and these are the internal resistance (R Int.) and the internal Inductance (L Int.), and these can be shown as lumped components in the Thevenin Equivalent cir ...
Caution - leakage currents!
... currents far above the grid frequency of 50 Hz. > The inverter generates an output voltage that can vary in amplitude and frequency corresponding to the desired motor speed. mains input ...
... currents far above the grid frequency of 50 Hz. > The inverter generates an output voltage that can vary in amplitude and frequency corresponding to the desired motor speed. mains input ...
AN3394
... DEMO-CR95HF-A demonstration board equivalent circuit. . . . . . . . . . . . . . . . . . . . . . . . . . 6 CR95HF equivalent output impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Chip simplified equivalent impedance . . . . . . . . . . . . . . . . . . . ...
... DEMO-CR95HF-A demonstration board equivalent circuit. . . . . . . . . . . . . . . . . . . . . . . . . . 6 CR95HF equivalent output impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Chip simplified equivalent impedance . . . . . . . . . . . . . . . . . . . ...
Document
... another name for critical or cutoff frequency. Decibel Ten times the logarithmic ratio of two powers. Selectivity A measure of how effectively a resonant circuit passes desired frequencies and rejects all others. Generally, the narrower the bandwidth, the greater the selectivity. ...
... another name for critical or cutoff frequency. Decibel Ten times the logarithmic ratio of two powers. Selectivity A measure of how effectively a resonant circuit passes desired frequencies and rejects all others. Generally, the narrower the bandwidth, the greater the selectivity. ...
Oscillators
... network produces a feedback voltage ( ) that is in phase with the input signal ( ) as shown in Figure 18-1. The amplifier shown in the figure produces a 180° voltage phase shift, and the feedback network introduces another 180° voltage shift. This results in a combined 360° voltage phase shift, whic ...
... network produces a feedback voltage ( ) that is in phase with the input signal ( ) as shown in Figure 18-1. The amplifier shown in the figure produces a 180° voltage phase shift, and the feedback network introduces another 180° voltage shift. This results in a combined 360° voltage phase shift, whic ...
Measurement and Filtering of Output Noise of DC
... output terminals. Figure 13 shows the results of the same measurement with a 0.1 uF, ceramic capacitor, connected from the converter’s +15 volt rail to the 15 volt return. With a 0.1 uF cap the noise is reduced from 364 millivolts peak to peak in Figure 12 to 20.4 millivolts peak to peak in Figure 1 ...
... output terminals. Figure 13 shows the results of the same measurement with a 0.1 uF, ceramic capacitor, connected from the converter’s +15 volt rail to the 15 volt return. With a 0.1 uF cap the noise is reduced from 364 millivolts peak to peak in Figure 12 to 20.4 millivolts peak to peak in Figure 1 ...
XADC Layout Guidelines
... 5 mil (127 micron) traces were placed at a spacing of 6 mils (150 microns) wherever possible. This helps ensure that any interference, specifically EMI, that is picked up on one line is also picked up on the other line with the same magnitude and phase. The loop area is also reduced, which should he ...
... 5 mil (127 micron) traces were placed at a spacing of 6 mils (150 microns) wherever possible. This helps ensure that any interference, specifically EMI, that is picked up on one line is also picked up on the other line with the same magnitude and phase. The loop area is also reduced, which should he ...
High-Speed Board Layout Guidelines Introduction
... ground plane as possible. This technique will couple the transmission line tightly to the ground plane and help decouple it from adjacent signals. Use differential routing techniques where possible, especially for critical nets (i.e., match the lengths as well as the gyrations that each trace goes t ...
... ground plane as possible. This technique will couple the transmission line tightly to the ground plane and help decouple it from adjacent signals. Use differential routing techniques where possible, especially for critical nets (i.e., match the lengths as well as the gyrations that each trace goes t ...
915-MHz FSK/OOK Wireless Neural Recording SoC With 64 Mixed
... Recently, a number of neural recording SoCs have been reported which combine multi-channel neural recording, digitization, signal processing and/or RF transmission on a single chip. Our previous work in 0.35 m CMOS resulted in microsystems with 256 neural recording channels with on-chip data compres ...
... Recently, a number of neural recording SoCs have been reported which combine multi-channel neural recording, digitization, signal processing and/or RF transmission on a single chip. Our previous work in 0.35 m CMOS resulted in microsystems with 256 neural recording channels with on-chip data compres ...
L - ER Publications
... electricity for residential users and small industries. Both types of power generation use ac/ac and dc/ac static PWM converters for voltage conversion and battery banks for long-term energy storage. These converters perform maximum power point tracking to extract the maximum energy possible from wi ...
... electricity for residential users and small industries. Both types of power generation use ac/ac and dc/ac static PWM converters for voltage conversion and battery banks for long-term energy storage. These converters perform maximum power point tracking to extract the maximum energy possible from wi ...
I. Introduction
... analog systems which traditionally has been based on op-amp. This alternative approach leads to new methods of implementing analog transfer functions, and in many cases the conveyor-based implementation offers improved performance to the voltage op-amp-based implementation in terms of accuracy, band ...
... analog systems which traditionally has been based on op-amp. This alternative approach leads to new methods of implementing analog transfer functions, and in many cases the conveyor-based implementation offers improved performance to the voltage op-amp-based implementation in terms of accuracy, band ...
Distributed element filter
A distributed element filter is an electronic filter in which capacitance, inductance and resistance (the elements of the circuit) are not localised in discrete capacitors, inductors and resistors as they are in conventional filters. Its purpose is to allow a range of signal frequencies to pass, but to block others. Conventional filters are constructed from inductors and capacitors, and the circuits so built are described by the lumped element model, which considers each element to be ""lumped together"" at one place. That model is conceptually simple, but it becomes increasingly unreliable as the frequency of the signal increases, or equivalently as the wavelength decreases. The distributed element model applies at all frequencies, and is used in transmission line theory; many distributed element components are made of short lengths of transmission line. In the distributed view of circuits, the elements are distributed along the length of conductors and are inextricably mixed together. The filter design is usually concerned only with inductance and capacitance, but because of this mixing of elements they cannot be treated as separate ""lumped"" capacitors and inductors. There is no precise frequency above which distributed element filters must be used but they are especially associated with the microwave band (wavelength less than one metre).Distributed element filters are used in many of the same applications as lumped element filters, such as selectivity of radio channel, bandlimiting of noise and multiplexing of many signals into one channel. Distributed element filters may be constructed to have any of the bandforms possible with lumped elements (low-pass, band-pass, etc.) with the exception of high-pass, which is usually only approximated. All filter classes used in lumped element designs (Butterworth, Chebyshev, etc.) can be implemented using a distributed element approach.There are many component forms used to construct distributed element filters, but all have the common property of causing a discontinuity on the transmission line. These discontinuities present a reactive impedance to a wavefront travelling down the line, and these reactances can be chosen by design to serve as approximations for lumped inductors, capacitors or resonators, as required by the filter.The development of distributed element filters was spurred on by the military need for radar and electronic counter measures during World War II. Lumped element analogue filters had long before been developed but these new military systems operated at microwave frequencies and new filter designs were required. When the war ended, the technology found applications in the microwave links used by telephone companies and other organisations with large fixed-communication networks, such as television broadcasters. Nowadays the technology can be found in several mass-produced consumer items, such as the converters (figure 1 shows an example) used with satellite television dishes.