VSWR - LabVolt
... After a certain transit time, T, the voltage reaches the receiving end of the line, where it is reflected back to the generator due to the impedance mismatch. At that very moment, the incident and reflected voltages have the same phase, because the incident voltage is reflected with the same phase a ...
... After a certain transit time, T, the voltage reaches the receiving end of the line, where it is reflected back to the generator due to the impedance mismatch. At that very moment, the incident and reflected voltages have the same phase, because the incident voltage is reflected with the same phase a ...
Phys241ManualUnit4
... Concepts & Equations [9 points] – {One small paragraph for each important concept, as many paragraphs as it takes, 2+ pages.} Go over the lab activities and make a list of all the different concepts and equations that were covered. Then simply one at a time write a short paragraph explaining them. Y ...
... Concepts & Equations [9 points] – {One small paragraph for each important concept, as many paragraphs as it takes, 2+ pages.} Go over the lab activities and make a list of all the different concepts and equations that were covered. Then simply one at a time write a short paragraph explaining them. Y ...
4-channel half-duplex m-lvds line transceivers
... thresholds centered about zero with 25 mV of hysteresis to prevent output oscillations with loss of input; Type-2 receivers implement a failsafe by using an offset threshold. The xFSEN pins is used to select the Type-1 and Type-2 receiver for each of the channels. In addition, the driver rise and fa ...
... thresholds centered about zero with 25 mV of hysteresis to prevent output oscillations with loss of input; Type-2 receivers implement a failsafe by using an offset threshold. The xFSEN pins is used to select the Type-1 and Type-2 receiver for each of the channels. In addition, the driver rise and fa ...
Micro-Tech Series - HARMAN Professional Solutions
... This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. CAUTION: Changes or modi ...
... This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. CAUTION: Changes or modi ...
2.3 COMPONENT OPERATION 2.3.1 Photovoltaic Cells 2.3.2
... content deep cycle batteries. However, since these modules can overcharge batteries, they usually require a charge controller. Finally, 44 cell modules are available with a rated output voltage of 20.3 volts. These modules are typically used only when a substantially higher voltage is required. As a ...
... content deep cycle batteries. However, since these modules can overcharge batteries, they usually require a charge controller. Finally, 44 cell modules are available with a rated output voltage of 20.3 volts. These modules are typically used only when a substantially higher voltage is required. As a ...
Supply Voltage Supervisors
... for undervoltage conditions at the SENSE input. During power up, the RESET output becomes active (low) when VCC attains a value approaching 3.6 V. At this point (assuming that SENSE is above VIT+), the delay timer function activates a time delay, after which outputs RESET and RESET go inactive (high ...
... for undervoltage conditions at the SENSE input. During power up, the RESET output becomes active (low) when VCC attains a value approaching 3.6 V. At this point (assuming that SENSE is above VIT+), the delay timer function activates a time delay, after which outputs RESET and RESET go inactive (high ...
AN417
... shows that the battery temperature has substantially increased at point A when charge is terminated, which may decrease the life-time of the battery. More precisely in Figure 3, most of the current fed to the battery between point B and the negative voltage drop A is not directly converted into acti ...
... shows that the battery temperature has substantially increased at point A when charge is terminated, which may decrease the life-time of the battery. More precisely in Figure 3, most of the current fed to the battery between point B and the negative voltage drop A is not directly converted into acti ...
the complete Kit Notes - Mini-Kits
... new features to the software. Software additions now allow for a number of memory channels, & the option of using a Rotary Encoder for tuning, & external bandswitching which allows up to 5 Bands to be programmed. The software supplied with the Kit can easily be changed without having to reprogram a ...
... new features to the software. Software additions now allow for a number of memory channels, & the option of using a Rotary Encoder for tuning, & external bandswitching which allows up to 5 Bands to be programmed. The software supplied with the Kit can easily be changed without having to reprogram a ...
Heathkit SB-301 - Orange County (California) Amateur Radio Club
... on strong signals. This reduction in gain is measured by the S-meter to indicate signal strength. The two stages are coupled with an L–C network mounted in an IF transformer can and a coupling capacitor. A second identical network couples the output of the second IF tube to the AM detector, the prod ...
... on strong signals. This reduction in gain is measured by the S-meter to indicate signal strength. The two stages are coupled with an L–C network mounted in an IF transformer can and a coupling capacitor. A second identical network couples the output of the second IF tube to the AM detector, the prod ...
SP238A 数据资料DataSheet下载
... The drivers are inverting transmitters, which accept TTL or CMOS inputs and output the RS-232 signals with an inverted sense relative to the input logic levels. The transmitter outputs are protected against infinite short‑circuits to ground without degradation in reliability. Should the input of the ...
... The drivers are inverting transmitters, which accept TTL or CMOS inputs and output the RS-232 signals with an inverted sense relative to the input logic levels. The transmitter outputs are protected against infinite short‑circuits to ground without degradation in reliability. Should the input of the ...
Estimation of Zero-Sequence Impedance of Undergrounds Cables for Single-Phase Fault Location
... In literature, different methods for estimating the location of distribution line faults are described. One of these methods uses the fundamental frequency voltages and currents measured at the origin terminal of the line. It is known as impedancebased method, since it consists of calculating line i ...
... In literature, different methods for estimating the location of distribution line faults are described. One of these methods uses the fundamental frequency voltages and currents measured at the origin terminal of the line. It is known as impedancebased method, since it consists of calculating line i ...
Sim
... Now the machine is loaded by the negative external load of -6 N*m at the time of t=1.5 sec, when the machine has reached the steady state. In this case the machine is driven at higher speed than the synchronous speed. The machine will deliver the power to the grid. At t=1.5 sec, the phase angle is c ...
... Now the machine is loaded by the negative external load of -6 N*m at the time of t=1.5 sec, when the machine has reached the steady state. In this case the machine is driven at higher speed than the synchronous speed. The machine will deliver the power to the grid. At t=1.5 sec, the phase angle is c ...
Micro-Sm TIR
... Backup or Emergency Generator: An independent reserve source of electric energy that, upon failure or outage of the normal source, automatically provides reliable electric power within a specified time to critical devices and equipment whose failure to operate satisfactorily would jeopardize the hea ...
... Backup or Emergency Generator: An independent reserve source of electric energy that, upon failure or outage of the normal source, automatically provides reliable electric power within a specified time to critical devices and equipment whose failure to operate satisfactorily would jeopardize the hea ...
ZXLD1356/ ZXLD1356Q Description Pin Assignments
... designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates ...
... designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates ...
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.