Fluorescent Lamp Phosphors - The Electrochemical Society
... The first half of the lanthanide series (Ln = La to Gd) crystallizes in the monoclinic monazite-type structure while the later half (Ln = Tb to Lu, Y, Sc) exists as the zircon type structure. In the monazite structure the lanthanide ions are nine-coordinated. The efficient green luminescence of LaPO ...
... The first half of the lanthanide series (Ln = La to Gd) crystallizes in the monoclinic monazite-type structure while the later half (Ln = Tb to Lu, Y, Sc) exists as the zircon type structure. In the monazite structure the lanthanide ions are nine-coordinated. The efficient green luminescence of LaPO ...
DRV632 数据资料 dataSheet 下载
... DC input-blocking capacitors are required to be added in series with the audio signal into the input pins of the DRV632. These capacitors block the dc portion of the audio source and allow the DRV632 inputs to be properly biased to provide maximum performance. These capacitors form a high-pass filte ...
... DC input-blocking capacitors are required to be added in series with the audio signal into the input pins of the DRV632. These capacitors block the dc portion of the audio source and allow the DRV632 inputs to be properly biased to provide maximum performance. These capacitors form a high-pass filte ...
1. Introduction Flux-flow noise generated by the motion of magnetic
... I, and hence the noise decreases rapidly with the current. Closer to the transition fields, however, the metastable DP is much more stable and therefore at 23 mA Lr remains large and SV is still increasing with current (see the inset). At 36 mA most of the sample is in the OP and the excess noise is ...
... I, and hence the noise decreases rapidly with the current. Closer to the transition fields, however, the metastable DP is much more stable and therefore at 23 mA Lr remains large and SV is still increasing with current (see the inset). At 36 mA most of the sample is in the OP and the excess noise is ...
Li-ion Battery Charger Protection IC MP267x Series Application Note
... (a) BOVP blanking time (b) BOVP counter Figure 9: MP2674 response to battery over-voltage For input reverse-polarity protection, the most common solution is to add an external diode in series with the input to block any reverse current, as shown in Figure 6. Furthermore, replacing this diode with a ...
... (a) BOVP blanking time (b) BOVP counter Figure 9: MP2674 response to battery over-voltage For input reverse-polarity protection, the most common solution is to add an external diode in series with the input to block any reverse current, as shown in Figure 6. Furthermore, replacing this diode with a ...
Products for marine applications Performance and reliability in
... medium voltage converter. The compact construction produces a small footprint and lightweight design, giving greater flexibility to ship designers and making more space available for other purposes. Applications: The modular platform is extremely versatile, providing a basis for marine certified sta ...
... medium voltage converter. The compact construction produces a small footprint and lightweight design, giving greater flexibility to ship designers and making more space available for other purposes. Applications: The modular platform is extremely versatile, providing a basis for marine certified sta ...
Institutionen för systemteknik
... A measurement setup is done in the bus, described in Chapter 3, measuring important voltage levels during different circumstances, to capture the dynamics of the system. The signal to be used as a feedback signal is investigated. It is evaluated if the performance of the control system is improved ...
... A measurement setup is done in the bus, described in Chapter 3, measuring important voltage levels during different circumstances, to capture the dynamics of the system. The signal to be used as a feedback signal is investigated. It is evaluated if the performance of the control system is improved ...
Complete PDF Edition (3,509 KB)
... he second half of the 20th century saw the birth of power electronics, which has rapidly taken an important position in the infrastructure supporting all sectors of industry. Uninterruptible power supplies (UPSs) have become indispensable as highly reliable sources of power for the computers and com ...
... he second half of the 20th century saw the birth of power electronics, which has rapidly taken an important position in the infrastructure supporting all sectors of industry. Uninterruptible power supplies (UPSs) have become indispensable as highly reliable sources of power for the computers and com ...
MVW01 - Medium Voltage Drive
... - ND = Normal Duty: maximum current/power with 115% overload for 60 seconds, every 10 minutes. - HD = Heavy Duty: maximum current/power with 150% overload for 60 seconds, every 10 minutes. - Motor power is for reference only and it is based on 4P motor, with 0.87 P.F. and 97% efficiency at full load ...
... - ND = Normal Duty: maximum current/power with 115% overload for 60 seconds, every 10 minutes. - HD = Heavy Duty: maximum current/power with 150% overload for 60 seconds, every 10 minutes. - Motor power is for reference only and it is based on 4P motor, with 0.87 P.F. and 97% efficiency at full load ...
Audio Products
... This device is provided in a 5-pin TO-3P plastic package with pin 4 removed. Contact Semelab for application support and additional information on device performance. Features and Benefits • Built-in temperature compensation diodes • High power (100 W) handling in a small package (TO-3P), for ...
... This device is provided in a 5-pin TO-3P plastic package with pin 4 removed. Contact Semelab for application support and additional information on device performance. Features and Benefits • Built-in temperature compensation diodes • High power (100 W) handling in a small package (TO-3P), for ...
- Nottingham ePrints
... i∗ (k+1) can be extrapolated by using the present and previous values of the current reference as: i∗ (k + 1) = 3i∗ (k) − 3i∗ (k − 1) + i∗ (k − 2) ...
... i∗ (k+1) can be extrapolated by using the present and previous values of the current reference as: i∗ (k + 1) = 3i∗ (k) − 3i∗ (k − 1) + i∗ (k − 2) ...
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
... However, voltage downscaling results in a linear increase in the propagation delay of the logic gates. Therefore, the threshold voltage of the transistors must be lowered to maintain the circuit speed. This reduction in Vth results in a significant increase in the leakage current, which increases th ...
... However, voltage downscaling results in a linear increase in the propagation delay of the logic gates. Therefore, the threshold voltage of the transistors must be lowered to maintain the circuit speed. This reduction in Vth results in a significant increase in the leakage current, which increases th ...
TPS65020EVM-110 数据资料 dataSheet 下载
... TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguar ...
... TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguar ...
AD7666 数据手册DataSheet下载
... analog-to-digital converter that operates from a single 5 V power supply. The part contains a high speed, 16-bit sampling ADC, an internal conversion clock, internal reference, error correction circuits, and both serial and parallel system interface ports. The AD7666 is hardware factory-calibrated a ...
... analog-to-digital converter that operates from a single 5 V power supply. The part contains a high speed, 16-bit sampling ADC, an internal conversion clock, internal reference, error correction circuits, and both serial and parallel system interface ports. The AD7666 is hardware factory-calibrated a ...
MAX9152 800Mbps LVDS/LVPECL-to-LVDS 2 x 2 Crosspoint Switch General Description
... The LVDS interface standard is a signaling method intended for point-to-point communication over a controlled impedance medium as defined by the ANSI TIA/EIA-644 and IEEE 1596.3 standards. LVDS uses a lower voltage swing than other common communication standards, achieving higher data rates with red ...
... The LVDS interface standard is a signaling method intended for point-to-point communication over a controlled impedance medium as defined by the ANSI TIA/EIA-644 and IEEE 1596.3 standards. LVDS uses a lower voltage swing than other common communication standards, achieving higher data rates with red ...
Current-Fed Switched Inverter
... The limitation of traditional VSI is that its peak ac output voltage is always less than the input dc-link voltage [3]. Also, shoot-through in any of the inverter legs is not permitted as it results in flowing of high short-circuit current. Therefore, a dead-band is introduced between the switching ...
... The limitation of traditional VSI is that its peak ac output voltage is always less than the input dc-link voltage [3]. Also, shoot-through in any of the inverter legs is not permitted as it results in flowing of high short-circuit current. Therefore, a dead-band is introduced between the switching ...
Mechanic Computer Hardware (SEMESTER PATTERN) Designed in: 2013
... AC and DC to RL circuit and observe the response. Identify, Test and measure capacitance of various capacitors. Monitor RC ckt behavior by applying different voltages and frequencies Measure Time constant for different values of R and C. Measure the V, I of a RLC series and parallel ckts at resonant ...
... AC and DC to RL circuit and observe the response. Identify, Test and measure capacitance of various capacitors. Monitor RC ckt behavior by applying different voltages and frequencies Measure Time constant for different values of R and C. Measure the V, I of a RLC series and parallel ckts at resonant ...
(AFE) Drives - Mirus International
... Active Front End (AFE) Drive manufacturers will claim that their technology provides the best solution for treatment of harmonics associated with variable frequency drives (VFDs). They are quick to point out benefits over standard 6-Pulse VFDs equipped with diode bridge rectifiers such as, reduced l ...
... Active Front End (AFE) Drive manufacturers will claim that their technology provides the best solution for treatment of harmonics associated with variable frequency drives (VFDs). They are quick to point out benefits over standard 6-Pulse VFDs equipped with diode bridge rectifiers such as, reduced l ...
ELECTRICAL Supplies - North American Retail Hardware Association
... Bedrooms under 150 sq. ft. use a total of concerned with both function and design. 120 to 200 watts in a ceiling fixture, 4' to 9' Along with design and function, many cusof wall lighting or one 150-watt recessed fixtomers are becoming more concerned about ture. Over 150 sq. ft. use 120 to 200 watts ...
... Bedrooms under 150 sq. ft. use a total of concerned with both function and design. 120 to 200 watts in a ceiling fixture, 4' to 9' Along with design and function, many cusof wall lighting or one 150-watt recessed fixtomers are becoming more concerned about ture. Over 150 sq. ft. use 120 to 200 watts ...
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.