MC14046B - Phase Locked Loop
... initially in lock; 2fL = full VCO frequency range = fmax – fmin. ...
... initially in lock; 2fL = full VCO frequency range = fmax – fmin. ...
Tramp Iron Removal with actively controlled electromagnets: An
... at the higher current level, than for the case when for every metal item the coil gets energized from zero to maximum intensity. Further, operating the magnet at a preset energy level reduces ramp-up time and helps minimizing mechanical contraction in the solenoid. b. Coil current (upper level): The ...
... at the higher current level, than for the case when for every metal item the coil gets energized from zero to maximum intensity. Further, operating the magnet at a preset energy level reduces ramp-up time and helps minimizing mechanical contraction in the solenoid. b. Coil current (upper level): The ...
ADXRS652 英文数据手册DataSheet 下载
... The ADXRS652 operates on the principle of a resonator gyro. Two polysilicon sensing structures each contain a dither frame that is electrostatically driven to resonance, producing the necessary velocity element to produce a Coriolis force during angular rate. At two of the outer extremes of each fra ...
... The ADXRS652 operates on the principle of a resonator gyro. Two polysilicon sensing structures each contain a dither frame that is electrostatically driven to resonance, producing the necessary velocity element to produce a Coriolis force during angular rate. At two of the outer extremes of each fra ...
Electricity - Kelso High School
... In this section you will find out about some rules which control the design of electric circuits and investigate some circuits used in cars and at home. You will also learn how to test for electrical faults. At General level, by the end of this section you should be able to: 1. State a practical e ...
... In this section you will find out about some rules which control the design of electric circuits and investigate some circuits used in cars and at home. You will also learn how to test for electrical faults. At General level, by the end of this section you should be able to: 1. State a practical e ...
Transformer Excitation Current Test
... • For each phase, the DETC pattern should be identified by comparing data at different DETC positions. The approach to DETC pattern analysis depends on whether the unit is an inductive or capacitive specimen. • When a given phase behaves as an INDUCTIVE specimen, the DETC pattern follows the change ...
... • For each phase, the DETC pattern should be identified by comparing data at different DETC positions. The approach to DETC pattern analysis depends on whether the unit is an inductive or capacitive specimen. • When a given phase behaves as an INDUCTIVE specimen, the DETC pattern follows the change ...
Application Note 1681 Design Migration from the LM1881
... whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform can be reasonably e ...
... whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform can be reasonably e ...
PCC
... Payloads used in ANSR balloon flights are subjected to temperatures as low -60 C which usually require additional heating and insulation. This results in limited mounting configurations, additional weight and take up space better served for circuit boards, etc. Most ANSR payloads have some form of c ...
... Payloads used in ANSR balloon flights are subjected to temperatures as low -60 C which usually require additional heating and insulation. This results in limited mounting configurations, additional weight and take up space better served for circuit boards, etc. Most ANSR payloads have some form of c ...
Why is a transformer needed?
... What do the terms "peak inrush current" and "exciting current" mean and how do they relate to transformers? Exciting current is the amount of amperage a transformer draws under a no load condition. Another way to look at it is that exciting current is the transformer's "idling" current. Exciting cur ...
... What do the terms "peak inrush current" and "exciting current" mean and how do they relate to transformers? Exciting current is the amount of amperage a transformer draws under a no load condition. Another way to look at it is that exciting current is the transformer's "idling" current. Exciting cur ...
RF System Summary
... • Plan to restore/refurbish “88MHz” system to useable state at 201 MHz • Blueprint for rebuild of “derelict” 201 MHz Circuit • Timescale? – Question of 88 MHz test for NF? – Probably release by end of year – Possibly mid-to-late 2005 • depends on funds; people availability • It is likely that the fu ...
... • Plan to restore/refurbish “88MHz” system to useable state at 201 MHz • Blueprint for rebuild of “derelict” 201 MHz Circuit • Timescale? – Question of 88 MHz test for NF? – Probably release by end of year – Possibly mid-to-late 2005 • depends on funds; people availability • It is likely that the fu ...
Electronic Ballasts - Ultra Violet Products
... Ultra Violet Lamps The UVP range of electronic ballasts have being specifically designed to operate our range of Standard, High Output and Amalgam, Low-Pressure Mercury Vapour Lamps, driving them at their optimum performance, but will also run any other brands of low-pressure mercury vapour lamps gi ...
... Ultra Violet Lamps The UVP range of electronic ballasts have being specifically designed to operate our range of Standard, High Output and Amalgam, Low-Pressure Mercury Vapour Lamps, driving them at their optimum performance, but will also run any other brands of low-pressure mercury vapour lamps gi ...
Regulating Pulse Width Modulators (Rev. C)
... performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1-V reference is trimmed to 1% and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors. A sync input to the oscillat ...
... performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1-V reference is trimmed to 1% and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors. A sync input to the oscillat ...
Evaluates: MAX1501 MAX1501 Evaluation Kit General Description Features
... to the total charging time, battery voltage levels, top-off current, die temperature regulation levels, and charging modes. LEDs on the board indicate the status of the charging cycle. ...
... to the total charging time, battery voltage levels, top-off current, die temperature regulation levels, and charging modes. LEDs on the board indicate the status of the charging cycle. ...
UCC25701 数据资料 dataSheet 下载
... UCC35701/2 is pin to pin compatible to UCC3570 but is not a direct drop-in replacement for UCC3570 sockets. The changes required to the power supply printed circuit board of for existing UCC3570 designs are minimal. For conversion, only one extra resistor to set the volt-second clamp needs to be add ...
... UCC35701/2 is pin to pin compatible to UCC3570 but is not a direct drop-in replacement for UCC3570 sockets. The changes required to the power supply printed circuit board of for existing UCC3570 designs are minimal. For conversion, only one extra resistor to set the volt-second clamp needs to be add ...
0.8-V Input Synchronous Boost Converters with 100
... The boost converter is based on a quasi fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save Mode to ensure high efficiency over a wide load current range. The maximum average curr ...
... The boost converter is based on a quasi fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save Mode to ensure high efficiency over a wide load current range. The maximum average curr ...
AAT1236 数据资料DataSheet下载
... The AAT1236 modulates the power MOSFET switching current to maintain the programmed sink current through each channel. The sink voltage at each channel is monitored and the controller provides direct feedback in order to maintain the desired LED currents. The switching cycle initiates when the N-cha ...
... The AAT1236 modulates the power MOSFET switching current to maintain the programmed sink current through each channel. The sink voltage at each channel is monitored and the controller provides direct feedback in order to maintain the desired LED currents. The switching cycle initiates when the N-cha ...
Switched-mode power supply
A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.