Casco diode - the key to high PFC efficiency BYC58X-600
... The test results, given in Figures 6 and 7, show that the Casco diode, with its shorter trr and lower VF, consistently achieves similar effiency to the Q-speed ...
... The test results, given in Figures 6 and 7, show that the Casco diode, with its shorter trr and lower VF, consistently achieves similar effiency to the Q-speed ...
MAX5900/MAX5901 -100V, SOT23/TDFN, Simple Swapper Hot-Swap Controllers General Description
... may also be used to change the UVLO level. UVLO keeps the external MOSFET switched off as long as the magnitude of the input voltage is less than a desired level. A power-good output, PGOOD (MAX5900) or PGOOD (MAX5901), asserts when the external MOSFET is fully enhanced and the drain-source voltage ...
... may also be used to change the UVLO level. UVLO keeps the external MOSFET switched off as long as the magnitude of the input voltage is less than a desired level. A power-good output, PGOOD (MAX5900) or PGOOD (MAX5901), asserts when the external MOSFET is fully enhanced and the drain-source voltage ...
AN29 - Some Thoughts on DC-DC Converters
... counter output (Trace B) combines with the logic network to present alternately phased clock bursts (Traces C and D) to the base resistors of Q1 and Q2. When φ1 (Trace B) is unclocked it resides in its high state, biasing Q2 and Q4 on. Q4’s collector effectively grounds the “bottom” of L1 (Trace H) ...
... counter output (Trace B) combines with the logic network to present alternately phased clock bursts (Traces C and D) to the base resistors of Q1 and Q2. When φ1 (Trace B) is unclocked it resides in its high state, biasing Q2 and Q4 on. Q4’s collector effectively grounds the “bottom” of L1 (Trace H) ...
The Reverse Behavior of the NPT-IGBT in its On-State 1
... The use of the IGBT in inverter circuits does not come without its problems. During the switching cycle the signs of current and voltage applied to the switching device change temporarily caused by the inversion of the flux of energy between supply and load. The IGBT has no provision for carrying ne ...
... The use of the IGBT in inverter circuits does not come without its problems. During the switching cycle the signs of current and voltage applied to the switching device change temporarily caused by the inversion of the flux of energy between supply and load. The IGBT has no provision for carrying ne ...
MAX3223-EP 数据资料 dataSheet 下载
... Test conditions are C1–C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V. The minimum reading of –4.9 V at VCC = 3.3 V falls outside the TIA/EIA-232 Standard. All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C. Short-circuit durations should be co ...
... Test conditions are C1–C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V. The minimum reading of –4.9 V at VCC = 3.3 V falls outside the TIA/EIA-232 Standard. All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C. Short-circuit durations should be co ...
ppt
... Resistance • Resistance is the property of a component which restricts the flow of electric current. Energy is used up as the voltage across the component drives the current through it and this energy appears as heat in the component. • Resistance is measured in ohms, the symbol for ohm is an omega ...
... Resistance • Resistance is the property of a component which restricts the flow of electric current. Energy is used up as the voltage across the component drives the current through it and this energy appears as heat in the component. • Resistance is measured in ohms, the symbol for ohm is an omega ...
The Electronic Blocks - Engineeringshock Electronics
... is low, there will be 0v at the output. For each comparator, there are two input splicing pins for each positive (+) and negative (-) input on the comparator pin-block. There are also two output splicing pins per comparator on the main pin-block. For example, SP1A, and C1B are both connected interna ...
... is low, there will be 0v at the output. For each comparator, there are two input splicing pins for each positive (+) and negative (-) input on the comparator pin-block. There are also two output splicing pins per comparator on the main pin-block. For example, SP1A, and C1B are both connected interna ...
AN3172
... The board implements a burst-mode function allowing a significant power saving during light-load operation. The L6599A’s STBY pin (#5) senses the optocoupler’s collector voltage which is related to the feedback control and is proportional to the output load. This signal is compared to an internal re ...
... The board implements a burst-mode function allowing a significant power saving during light-load operation. The L6599A’s STBY pin (#5) senses the optocoupler’s collector voltage which is related to the feedback control and is proportional to the output load. This signal is compared to an internal re ...
Spin current and rectification in one-dimensional electronic systems Bernd Braunecker,
... which corresponds to the strongest rectification. We expect qualitatively the same behavior at T ⬃ V. At higher temperatures, the charge and spin rectification effects disappear. Since the temperatures of the order of millikelvins can be achieved with dilution refrigeration, the rectification effect ...
... which corresponds to the strongest rectification. We expect qualitatively the same behavior at T ⬃ V. At higher temperatures, the charge and spin rectification effects disappear. Since the temperatures of the order of millikelvins can be achieved with dilution refrigeration, the rectification effect ...
Lesson 22
... Consider a magnetic circuit with constant (d.c) excitation current I0. Flux established will have fixed value with a fixed direction. Suppose this final current I0 has been attained from zero current slowly by energizing the coil from a potential divider arrangement as depicted in Figure 22.7. Let u ...
... Consider a magnetic circuit with constant (d.c) excitation current I0. Flux established will have fixed value with a fixed direction. Suppose this final current I0 has been attained from zero current slowly by energizing the coil from a potential divider arrangement as depicted in Figure 22.7. Let u ...
Device Maintenance as it relates to the Arc Flash Hazard
... of the best materials available, and with a high degree of tooling for operational accuracy. Manufacturer’s tests show these circuit breakers to have durability beyond the minimum standards requirements. All of these factors give these circuit breakers a very high reliability rating. However, becaus ...
... of the best materials available, and with a high degree of tooling for operational accuracy. Manufacturer’s tests show these circuit breakers to have durability beyond the minimum standards requirements. All of these factors give these circuit breakers a very high reliability rating. However, becaus ...
Transient Voltage Surge Suppressors
... 1. The test shall include an ANSI/IEEE C62.41-1991 Category C1 surge defined as a 1.2 X 50 μ sec, 6000V open circuit voltage waveform and an 8 X 20 μ sec, 3000A short circuit current waveform to benchmark the unit's suppression voltage, followed by a single pulse surge of maximum rated surge current ...
... 1. The test shall include an ANSI/IEEE C62.41-1991 Category C1 surge defined as a 1.2 X 50 μ sec, 6000V open circuit voltage waveform and an 8 X 20 μ sec, 3000A short circuit current waveform to benchmark the unit's suppression voltage, followed by a single pulse surge of maximum rated surge current ...
28 Vdc MIL-COTS VIPAC
... This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be liable for collateral or consequential damage. Vicor disclaims any and all liability arising out of the application or use of any product or circuit and assum ...
... This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be liable for collateral or consequential damage. Vicor disclaims any and all liability arising out of the application or use of any product or circuit and assum ...
LS7083 LS7084
... • x1 and x4 mode selection • Up to 16MHz output clock frequency • Programmable output clock pulse width • On-chip filtering of inputs for optical or magnetic encoder applications. • TTL and CMOS compatible I/Os • +4.5V to +10V operation (VDD - VSS) • LS7083, LS7084 (DIP); LS7083-S, LS7084-S (SOIC) - ...
... • x1 and x4 mode selection • Up to 16MHz output clock frequency • Programmable output clock pulse width • On-chip filtering of inputs for optical or magnetic encoder applications. • TTL and CMOS compatible I/Os • +4.5V to +10V operation (VDD - VSS) • LS7083, LS7084 (DIP); LS7083-S, LS7084-S (SOIC) - ...
AD5300 数据手册DataSheet 下载
... draws more current when VIN = 2.4 V than it does when VIN = 0.8 V, SYNC should be idled low between write sequences for even lower power operation of the part. As previously mentioned, however, it must be brought high again just before the next write sequence. ...
... draws more current when VIN = 2.4 V than it does when VIN = 0.8 V, SYNC should be idled low between write sequences for even lower power operation of the part. As previously mentioned, however, it must be brought high again just before the next write sequence. ...
RF3854 LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER
... The RF3854 is a low noise, multi-mode, quad-band direct I/Q to RF modulator and PA driver solution designed for digital modulation applications ranging from 800MHz to 2000MHz. Frequency doublers, dividers and LO buffers are included to support a variety of LO generation options. Dynamic power contro ...
... The RF3854 is a low noise, multi-mode, quad-band direct I/Q to RF modulator and PA driver solution designed for digital modulation applications ranging from 800MHz to 2000MHz. Frequency doublers, dividers and LO buffers are included to support a variety of LO generation options. Dynamic power contro ...
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.