Designing Non-Invert Buck-Boost (Zeta) Cnvrts
... Figure 1. COT regulators do not require loop compensation and provide excellent transient performance with minimum design effort. Nonsynchronous operation results in reduced switching frequency at a very light load which delivers higher efficiency than a comparable fixed frequency converter. In many ...
... Figure 1. COT regulators do not require loop compensation and provide excellent transient performance with minimum design effort. Nonsynchronous operation results in reduced switching frequency at a very light load which delivers higher efficiency than a comparable fixed frequency converter. In many ...
ADuM5401 英文数据手册DataSheet下载
... The ADuM5401/ADuM5402/ADuM5403/ADuM54041 devices are quad-channel digital isolators with isoPower®, an integrated, isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler® technology, the dc-to-dc converter provides up to 500 mW of regulated, isolated power at either 5.0 V from a 5. ...
... The ADuM5401/ADuM5402/ADuM5403/ADuM54041 devices are quad-channel digital isolators with isoPower®, an integrated, isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler® technology, the dc-to-dc converter provides up to 500 mW of regulated, isolated power at either 5.0 V from a 5. ...
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Spec Section 16483 [specs]
... configuration (packaged or non-packaged), regardless of location where VFDs are specified, and regardless of which trade supplies and installs VFDs. The decision of whether or not to incorporate VFDs for control of mechanical equipment into the building design shall rest with the mechanical consulta ...
... configuration (packaged or non-packaged), regardless of location where VFDs are specified, and regardless of which trade supplies and installs VFDs. The decision of whether or not to incorporate VFDs for control of mechanical equipment into the building design shall rest with the mechanical consulta ...
an106.pdf
... The dominant pole placed by the output capacitor influences stability. Voltage regulator vendors can assist you in output capacitor selection for regulator designs that differ from what is offered. ...
... The dominant pole placed by the output capacitor influences stability. Voltage regulator vendors can assist you in output capacitor selection for regulator designs that differ from what is offered. ...
Voltage Transformers
... configuration of the transmission circuits so far as it affects the magnitude of the zerophase-sequence reactance. For faults at the potential-device location, for which the voltage is highest, 3V0 can vary approximately from 1 to 3 times the rated voltage of each of the broken-delta windings. (Thi ...
... configuration of the transmission circuits so far as it affects the magnitude of the zerophase-sequence reactance. For faults at the potential-device location, for which the voltage is highest, 3V0 can vary approximately from 1 to 3 times the rated voltage of each of the broken-delta windings. (Thi ...
LTC3404 - 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator
... voltage VFB is below 0.6V. This prevents the external clock from interfering with the frequency foldback for shortcircuit protection. Dropout Operation When the input supply voltage decreases toward the output voltage, the duty cycle increases toward the maximum on-time. Further reduction of the sup ...
... voltage VFB is below 0.6V. This prevents the external clock from interfering with the frequency foldback for shortcircuit protection. Dropout Operation When the input supply voltage decreases toward the output voltage, the duty cycle increases toward the maximum on-time. Further reduction of the sup ...
ComponentIdentification
... • Demonstrate how to read a resistor’s nominal value and how to measure its actual value with a Digital Multi-Meter (DMM). • Define a capacitor and present various capacitor types and package styles. • Demonstrate how to read a capacitor’s nominal value. ...
... • Demonstrate how to read a resistor’s nominal value and how to measure its actual value with a Digital Multi-Meter (DMM). • Define a capacitor and present various capacitor types and package styles. • Demonstrate how to read a capacitor’s nominal value. ...
LP2951-N - Texas Instruments
... Unless otherwise noted, all limits apply for TA = TJ = 25°C as well as specified for VIN = (VONOM + 1 V), IL = 100 μA and CL = 1 μF for 5-V versions and 2.2 μF for 3-V and 3.3-V versions. Additional conditions for the 8-pin versions are FEEDBACK tied to VTAP, OUTPUT tied to SENSE, and VSHUTDOWN ≤ 0. ...
... Unless otherwise noted, all limits apply for TA = TJ = 25°C as well as specified for VIN = (VONOM + 1 V), IL = 100 μA and CL = 1 μF for 5-V versions and 2.2 μF for 3-V and 3.3-V versions. Additional conditions for the 8-pin versions are FEEDBACK tied to VTAP, OUTPUT tied to SENSE, and VSHUTDOWN ≤ 0. ...
Evaluation Board for Loop Powered 4-20mA DAC EVAL
... Interfacing to the evaluation board is via a 36-pin Centronics connector, SKT1 using a standard parallel printer port cable. The pinout for the SKT1 connector is given in Figure 1 and its corresponding pin designations are given in Table I. The evaluation board should be powered up before a cable is ...
... Interfacing to the evaluation board is via a 36-pin Centronics connector, SKT1 using a standard parallel printer port cable. The pinout for the SKT1 connector is given in Figure 1 and its corresponding pin designations are given in Table I. The evaluation board should be powered up before a cable is ...
1.8V to 28V Input, PWM Step-Up Controllers in µMAX General Description Features
... designed for a wide range of DC-DC conversion applications including step-up, SEPIC, flyback, and isolatedoutput configurations. Power levels of 20W or more can be controlled with conversion efficiencies of over 90%. The 1.8V to 28V input voltage range supports a wide range of battery and AC-powered ...
... designed for a wide range of DC-DC conversion applications including step-up, SEPIC, flyback, and isolatedoutput configurations. Power levels of 20W or more can be controlled with conversion efficiencies of over 90%. The 1.8V to 28V input voltage range supports a wide range of battery and AC-powered ...
MAX17598 Evaluation Kit MAX17598 in Active-Clamp Forward Converter Topology General Description
... The MAX17598 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains a peak-current-mode controller for an active-clamp forward regulator. The EV kit is configured for an isolated 3.3V DC output voltage that can supply up to 8A of current. The input voltage ...
... The MAX17598 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains a peak-current-mode controller for an active-clamp forward regulator. The EV kit is configured for an isolated 3.3V DC output voltage that can supply up to 8A of current. The input voltage ...
Calibrating Power Meters with the Fluke 5500A Multi
... types of power instruments Connecting the 5500A to a Make sure that you use high four-terminal power meter is quality test leads, and take care straightforward and intuitive not to use leads that are exces- (see Figure 3). From the front ...
... types of power instruments Connecting the 5500A to a Make sure that you use high four-terminal power meter is quality test leads, and take care straightforward and intuitive not to use leads that are exces- (see Figure 3). From the front ...
TAS5111A 数据资料 dataSheet 下载
... µs to fully charge the BST capacitor. Within this time, RESET must be kept low. After approximately 1 ms, the back-end bootstrap capacitor is charged. RESET can now be released if the modulator is powered up and streaming valid PWM signals to the back-end PWM_xP. Valid means a switching PWM signal w ...
... µs to fully charge the BST capacitor. Within this time, RESET must be kept low. After approximately 1 ms, the back-end bootstrap capacitor is charged. RESET can now be released if the modulator is powered up and streaming valid PWM signals to the back-end PWM_xP. Valid means a switching PWM signal w ...
TechTopics No. 55 Capacitor trip devices
... breaker shall operate properly with a minimum control voltage of 208 Vac. Siemens’ practice during production tests is to charge the capacitor from a source adjusted to 208 Vac, and then disconnect the source. The CTD must be able to trip the circuit breaker if the tripping command is issued 10 seco ...
... breaker shall operate properly with a minimum control voltage of 208 Vac. Siemens’ practice during production tests is to charge the capacitor from a source adjusted to 208 Vac, and then disconnect the source. The CTD must be able to trip the circuit breaker if the tripping command is issued 10 seco ...
2351E Datasheet - System Sensor Europe
... features of the 2351E detector. These algorithms ensure a consistent alarm sensitivity threshold for periods between service intervals. This provides the user with both a reduction in the frequency of nuisance alarms and maintenance savings by extending the period before cleaning of the detector cha ...
... features of the 2351E detector. These algorithms ensure a consistent alarm sensitivity threshold for periods between service intervals. This provides the user with both a reduction in the frequency of nuisance alarms and maintenance savings by extending the period before cleaning of the detector cha ...
A Study of Induction Motor Starting Methods In Terms of Power Quality
... characteristics of voltage sags and temporary interruptions which can affect the functions of three-phase induction motors that are mostly used in the power distribution systems [6]. These assorted characteristics include the motor speed losses, voltage recovery, motor reacceleration, and transient ...
... characteristics of voltage sags and temporary interruptions which can affect the functions of three-phase induction motors that are mostly used in the power distribution systems [6]. These assorted characteristics include the motor speed losses, voltage recovery, motor reacceleration, and transient ...
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.