LM432 数据资料 dataSheet 下载
... Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Note 2: Operating Rating indicate conditions for which the device is functional. These rating do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electri ...
... Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Note 2: Operating Rating indicate conditions for which the device is functional. These rating do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electri ...
SG6742WMR Highly Integrated Green-Mode PWM Controller
... SG6742WMR integrates a frequency-hopping function that helps reduce EMI emission of a power supply with minimum line filters. The built-in synchronized slope compensation achieves stable peak-current-mode control. The proprietary internal line compensation ensures constant output power limit over a ...
... SG6742WMR integrates a frequency-hopping function that helps reduce EMI emission of a power supply with minimum line filters. The built-in synchronized slope compensation achieves stable peak-current-mode control. The proprietary internal line compensation ensures constant output power limit over a ...
A Four-Level pi-Type Converter for Low
... Although the output harmonics can be further reduced with converters of higher number of voltage levels, e.g. four-level or five-level, the main concern is the increased complexity regarding the circuit (e.g. number of devices, gate drive, etc) and control complexity (modulation, capacitor voltage b ...
... Although the output harmonics can be further reduced with converters of higher number of voltage levels, e.g. four-level or five-level, the main concern is the increased complexity regarding the circuit (e.g. number of devices, gate drive, etc) and control complexity (modulation, capacitor voltage b ...
Overview of Dynamic Voltage Restorer (DVR) for Power Quality
... semiconductors of the VSIs. By this way additional thyristors needed during short circuit operation are eliminated. Since DVR is rated to compensate for 50% voltage sags, the current rating of the semiconductor switches must be enough to handle full load current which makes them suitable for continu ...
... semiconductors of the VSIs. By this way additional thyristors needed during short circuit operation are eliminated. Since DVR is rated to compensate for 50% voltage sags, the current rating of the semiconductor switches must be enough to handle full load current which makes them suitable for continu ...
HIGH POWER 3-PHASE AUXILIARY POWER SUPPLY DESIGN
... current rating and possibly a more expensive power transistor. Also, the higher primary current in the discontinuous mode results in a greater RFI problem. Despite all these relative disadvantages, the discontinuous mode is much more used for low Rev. 1 ...
... current rating and possibly a more expensive power transistor. Also, the higher primary current in the discontinuous mode results in a greater RFI problem. Despite all these relative disadvantages, the discontinuous mode is much more used for low Rev. 1 ...
Document
... waveform which is in-phase with input line voltage, crucial for. Consequently, the proposed CCM buck PFC can achieve high PF, low THD, and efficiency simultaneously. A test chip was fabricated in 0.5μm BCD process. Experimental ...
... waveform which is in-phase with input line voltage, crucial for. Consequently, the proposed CCM buck PFC can achieve high PF, low THD, and efficiency simultaneously. A test chip was fabricated in 0.5μm BCD process. Experimental ...
UW- Madison Geology 777
... • Source of electrons: various electron guns (thermoionic and field emission). We want high, stable current with small beam diameter. • Lenses are used to focus the beam and adjust the current • Current regulation and measurement essential • Beam can be either fixed (point for quant. analysis) ...
... • Source of electrons: various electron guns (thermoionic and field emission). We want high, stable current with small beam diameter. • Lenses are used to focus the beam and adjust the current • Current regulation and measurement essential • Beam can be either fixed (point for quant. analysis) ...
MAX881R Low-Noise Bias Supply in µMAX with Power-OK for GaAsFET PA General Description
... portable wireless applications. This device is a chargepump inverter followed by a negative linear regulator. The input voltage range is 2.5V to 5.5V. The output is preset at -2.0V or can be set, using two resistors, to any voltage from -0.5V to (-VIN + 0.6V). It can deliver up to 4mA. The internal ...
... portable wireless applications. This device is a chargepump inverter followed by a negative linear regulator. The input voltage range is 2.5V to 5.5V. The output is preset at -2.0V or can be set, using two resistors, to any voltage from -0.5V to (-VIN + 0.6V). It can deliver up to 4mA. The internal ...
Fig. 4(a) Waveforms for positive and negative half cycles of supply
... Power quality have become one of the key issue to be considered due to recommended limits for harmonics for supply current set by various international power quality standards such as International Electrotechnical Commission (IEC) 61000-3-2. For class A equipment (< 600 W, 16 A per phase), IEC 6100 ...
... Power quality have become one of the key issue to be considered due to recommended limits for harmonics for supply current set by various international power quality standards such as International Electrotechnical Commission (IEC) 61000-3-2. For class A equipment (< 600 W, 16 A per phase), IEC 6100 ...
Aalborg Universitet Reactive Power Injection Strategies for Single-Phase Photovoltaic Systems
... applications with lower power ratings (e.g. several kW), and are typically connected to low-voltage networks. Meanwhile, it is required in those grid regulations for most systems to operate at unity power factor (or a minimum power factor, e.g. power factor ≥ 0.9) with Maximum Power Point Tracking ( ...
... applications with lower power ratings (e.g. several kW), and are typically connected to low-voltage networks. Meanwhile, it is required in those grid regulations for most systems to operate at unity power factor (or a minimum power factor, e.g. power factor ≥ 0.9) with Maximum Power Point Tracking ( ...
TL720M05-Q1 Low-Dropout Voltage Regulator
... The device is designed to operate from an input voltage supply range between 4 V and 40 V. This input supply must be well regulated. If the input supply is located more than a few inches from the device, TI recommends adding an electrolytic capacitor with a value of 47 μF and a ceramic bypass at the ...
... The device is designed to operate from an input voltage supply range between 4 V and 40 V. This input supply must be well regulated. If the input supply is located more than a few inches from the device, TI recommends adding an electrolytic capacitor with a value of 47 μF and a ceramic bypass at the ...
Inductor Discharging
... Inductor Discharging • Assume an Inductor is initially fully charged with a constant 100 mA (IO) current flow. It acts like a short circuit… • When the switch is opened, the inductor will immediately induce a voltage to keep the 100 mA current constant. − KVL can be used to calculate this induced v ...
... Inductor Discharging • Assume an Inductor is initially fully charged with a constant 100 mA (IO) current flow. It acts like a short circuit… • When the switch is opened, the inductor will immediately induce a voltage to keep the 100 mA current constant. − KVL can be used to calculate this induced v ...
U-132 Power Factor Correction Using UC3852
... INDUCTOR DESIGN SUMMARY Generally, the size and cost of an inductor vary with its energy storage capacity, W(L). Although most of the energy is stored in the air gap (with a gapped ferrite design), the core set must support the necessary flux density (B) without saturating or exhibiting high core lo ...
... INDUCTOR DESIGN SUMMARY Generally, the size and cost of an inductor vary with its energy storage capacity, W(L). Although most of the energy is stored in the air gap (with a gapped ferrite design), the core set must support the necessary flux density (B) without saturating or exhibiting high core lo ...
nti-power_quality_at.. - IDEAL INDUSTRIES, INC.
... Transient Voltages Measure and record the time and amplitude Transients cause failure of communication control and datacom devices Transients destroy insulation and capacitors Determine if transient protection is working ...
... Transient Voltages Measure and record the time and amplitude Transients cause failure of communication control and datacom devices Transients destroy insulation and capacitors Determine if transient protection is working ...
Evaluates: MAX5943A/B/C/D/E MAX5943A Evaluation Kit General Description Features
... Installing resistor R13 and capacitor C5 will be necessary when the combination of current-limit setting, current-limit timeout, load capacitance value, and operating voltage could cause the IC to time out before a connected load capacitance is fully charged. The RC circuit may be needed when: • Cur ...
... Installing resistor R13 and capacitor C5 will be necessary when the combination of current-limit setting, current-limit timeout, load capacitance value, and operating voltage could cause the IC to time out before a connected load capacitance is fully charged. The RC circuit may be needed when: • Cur ...
MAX4506/MAX4507 Fault-Protected, High-Voltage Signal
... (<250µA), which allows the supply pins to be driven by other active circuitry instead of connected directly to the power sources. In this configuration, the parts can be used as driven fault-protected switches with V+ or V- used as the control pins. For example, with the Vpin grounded, the output of ...
... (<250µA), which allows the supply pins to be driven by other active circuitry instead of connected directly to the power sources. In this configuration, the parts can be used as driven fault-protected switches with V+ or V- used as the control pins. For example, with the Vpin grounded, the output of ...
metal finishing
... converted into trivalent Cr (III) by a complex anodic reaction in the presence of sulphate ions and then coated, as Cr on the cathode surface the amount of Cr (III) ions should be restricted in order to get proper deposit. Insoluble anodes are used to maintain the Cr (III) concentration as they oxid ...
... converted into trivalent Cr (III) by a complex anodic reaction in the presence of sulphate ions and then coated, as Cr on the cathode surface the amount of Cr (III) ions should be restricted in order to get proper deposit. Insoluble anodes are used to maintain the Cr (III) concentration as they oxid ...
SG6742ML/MR Highly Integrated Green-Mode PWM Controller SG6742M L/M
... SG6742ML/MR integrates a frequency-hopping function that helps reduce EMI emission of a power supply with minimum line filters. Its built-in synchronized slope compensation achieves stable peak-current-mode control. The proprietary, internal line compensation ensures constant output power limit over ...
... SG6742ML/MR integrates a frequency-hopping function that helps reduce EMI emission of a power supply with minimum line filters. Its built-in synchronized slope compensation achieves stable peak-current-mode control. The proprietary, internal line compensation ensures constant output power limit over ...
SG6742HL/HR Highly Integrated Green-Mode PWM Controller SG6742H L/H
... reliability. The output driver is clamped by an internal 18V Zener diode to protect power MOSFET transistors against undesirable gate over voltage. A soft driving waveform is implemented to minimize EMI. ...
... reliability. The output driver is clamped by an internal 18V Zener diode to protect power MOSFET transistors against undesirable gate over voltage. A soft driving waveform is implemented to minimize EMI. ...
Triode
A triode is an electronic amplifying vacuum tube (or valve in British English) consisting of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode). Invented in 1906 by Lee De Forest by adding a grid to the Fleming valve, the triode was the first electronic amplification device and the ancestor of other types of vacuum tubes such as the tetrode and pentode. Its invention founded the electronics age, making possible amplified radio technology and long-distance telephony. Triodes were widely used in consumer electronics devices such as radios and televisions until the 1970s, when transistors replaced them. Today, their main remaining use is in high-power RF amplifiers in radio transmitters and industrial RF heating devices. The word is derived from the Greek τρίοδος, tríodos, from tri- (three) and hodós (road, way), originally meaning the place where three roads meet.