Lecture 19
... 1. Within one to two cycles (16 ms) relays at both ends of line detect high currents, signaling circuit breakers to open the line ...
... 1. Within one to two cycles (16 ms) relays at both ends of line detect high currents, signaling circuit breakers to open the line ...
excitation systems
... 8.6.3 Modeling of Complete Excitation Systems Figure 8.39 depicts the general structure of a detailed excitation system model having a one-to-one correspondence with the physical equipment. While this model structure has the advantage of retaining a direct relationship between model parameters and ...
... 8.6.3 Modeling of Complete Excitation Systems Figure 8.39 depicts the general structure of a detailed excitation system model having a one-to-one correspondence with the physical equipment. While this model structure has the advantage of retaining a direct relationship between model parameters and ...
HP 34401A User`s Guide
... its sinewave accuracy specifications apply to all waveforms.” Actually, the shape of the input signal can dramatically affect measurement accuracy. A common way to describe signal waveshapes is crest factor. Crest factor is the ratio of the peak value to RMS value of a waveform. For a pulse train, f ...
... its sinewave accuracy specifications apply to all waveforms.” Actually, the shape of the input signal can dramatically affect measurement accuracy. A common way to describe signal waveshapes is crest factor. Crest factor is the ratio of the peak value to RMS value of a waveform. For a pulse train, f ...
doc - AWWU
... Industrial battery charger system components shall be manufactured by firms that are regularly engaged in the production of such systems, including auxiliary equipment similar to that required by this Contract, and that have been in satisfactory service for at least 10 years. ...
... Industrial battery charger system components shall be manufactured by firms that are regularly engaged in the production of such systems, including auxiliary equipment similar to that required by this Contract, and that have been in satisfactory service for at least 10 years. ...
Analog And Digital Interfacing - Network and Systems Laboratory
... Transfer Function Relationship between physical quantity and output voltage Sensitivity Ratio of change between physical quantity and output voltage Accuracy Largest expected error Linearity How linear the transfer function is Noise In real world, signal are usually coupled with ...
... Transfer Function Relationship between physical quantity and output voltage Sensitivity Ratio of change between physical quantity and output voltage Accuracy Largest expected error Linearity How linear the transfer function is Noise In real world, signal are usually coupled with ...
EET422 EMC intro 2008-2009 msw
... Magnetic fields are proportional to current and low frequency inductive coupling over short distances is the EMI problem. A time varying current in the power cable generates a magnetic field, as shown in Figure 1.13, that induces a ‘disturbance’ voltage in the nearby signal circuit that is modelled ...
... Magnetic fields are proportional to current and low frequency inductive coupling over short distances is the EMI problem. A time varying current in the power cable generates a magnetic field, as shown in Figure 1.13, that induces a ‘disturbance’ voltage in the nearby signal circuit that is modelled ...
Nessun titolo diapositiva - Istituto Nazionale di Fisica
... 2. Vertical Build-up at the very beginning of the avalanche t=0 pair generation 0t1
avalanche multiplication
* for short wavelength light
the first contribution is negligible
...
... 2. Vertical Build-up at the very beginning of the avalanche t=0 pair generation 0
Analog And Digital Interfacing
... Transfer Function Relationship between physical quantity and output voltage Sensitivity Ratio of change between physical quantity and output voltage Accuracy Largest expected error Linearity How linear the transfer function is Noise In real world, signal are usually coupled with ...
... Transfer Function Relationship between physical quantity and output voltage Sensitivity Ratio of change between physical quantity and output voltage Accuracy Largest expected error Linearity How linear the transfer function is Noise In real world, signal are usually coupled with ...
LTC1644 - CompactPCI Bus Hot Swap Controller
... to be safely inserted and removed from a CompactPCI bus slot. External N-channel transistors control the 3.3V/5V supplies, while on-chip switches control the –12V and 12V supplies. The 3.3V and 5V supplies can be ramped up at a programmable rate. Electronic circuit breakers protect all four supplies ...
... to be safely inserted and removed from a CompactPCI bus slot. External N-channel transistors control the 3.3V/5V supplies, while on-chip switches control the –12V and 12V supplies. The 3.3V and 5V supplies can be ramped up at a programmable rate. Electronic circuit breakers protect all four supplies ...
AFX Series - Caltest Instruments
... (MTTR) for an AFX system is low which ensures less down time and provides greater productivity while minimizing lost revenue. ...
... (MTTR) for an AFX system is low which ensures less down time and provides greater productivity while minimizing lost revenue. ...
Manual
... By providing an AC mains ground on the VXT and proper installation in a 'quiet studio' environment, the system is happily quiet. However, noise will be induced if the monitor is installed in less than desirable settings (i.e. audio cables run alongside power cables, behind refrigerators, near flores ...
... By providing an AC mains ground on the VXT and proper installation in a 'quiet studio' environment, the system is happily quiet. However, noise will be induced if the monitor is installed in less than desirable settings (i.e. audio cables run alongside power cables, behind refrigerators, near flores ...
Evaluation of ITS Equipment Generation and analysis of RF signals
... their waveforms. Based on measurements of signals from up to 16 channels, motor characteristics such as torque, speed, temperature, and distortion can be determined. Most notably, the waveform calculation function of the DL750/750P calculates the sum of instantaneous power values, enabling the obser ...
... their waveforms. Based on measurements of signals from up to 16 channels, motor characteristics such as torque, speed, temperature, and distortion can be determined. Most notably, the waveform calculation function of the DL750/750P calculates the sum of instantaneous power values, enabling the obser ...
LM111, LM211, LM311 Differential Comparators
... 8 Detailed Description 8.1 Overview The LM111, LM211 and LM311 are voltage comparators that have input currents nearly a thousand times lower than legacy standard devices. They are also designed to operate over a wider range of supply voltages: from standard ±15V op amp supplies down to the single 5 ...
... 8 Detailed Description 8.1 Overview The LM111, LM211 and LM311 are voltage comparators that have input currents nearly a thousand times lower than legacy standard devices. They are also designed to operate over a wider range of supply voltages: from standard ±15V op amp supplies down to the single 5 ...
using the sa605/615 if processor ic
... processing. The RSSI is scaled logarithmically and is quite useful in debugging as well as applications such as AM or power measurement. Key to stable operation are two bandpass filters at the input and output of the amplifier as well as DC bypass capacitors. The bandpass filters used are typically ...
... processing. The RSSI is scaled logarithmically and is quite useful in debugging as well as applications such as AM or power measurement. Key to stable operation are two bandpass filters at the input and output of the amplifier as well as DC bypass capacitors. The bandpass filters used are typically ...
AD9744 数据手册DataSheet 下载
... options, small outline package, and pinout, providing an upward or downward component selection path based on performance, resolution, and cost. The AD9744 offers exceptional ac and dc performance while supporting update rates up to 210 MSPS. The AD9744’s low power dissipation makes it well suited f ...
... options, small outline package, and pinout, providing an upward or downward component selection path based on performance, resolution, and cost. The AD9744 offers exceptional ac and dc performance while supporting update rates up to 210 MSPS. The AD9744’s low power dissipation makes it well suited f ...
Multiple-Load Circuits CHAPTER 5
... which voltage is to be measured. Voltmeters have a very high internal resistance, so high that connecting them to a circuit has no noticeable effect on many circuits. For now, assume that meters (both ammeters and voltmeters) do not change the circuits in which they are used. Also, assume that the v ...
... which voltage is to be measured. Voltmeters have a very high internal resistance, so high that connecting them to a circuit has no noticeable effect on many circuits. For now, assume that meters (both ammeters and voltmeters) do not change the circuits in which they are used. Also, assume that the v ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.