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Detecting, Identifying, and Correcting Power Quality Problems
Detecting, Identifying, and Correcting Power Quality Problems

RT8238A - Richtek Technology
RT8238A - Richtek Technology

... maintain high efficiency. This reduction of frequency is achieved smoothly and without increasing VOUT ripple or load regulation. As the output current decreases from heavy load condition, the inductor current is also reduced, and eventually comes to the point that its valley touches zero current, w ...
OPM-1038
OPM-1038

... The open fuse indicator status output acts very much like an on/off switch. With all three fuses in place and operating properly, this status output has a high resistance value of greater than ten mega-ohms. When one or more of the fuses are open, the status output becomes turned-on with a resistanc ...
test 2 review questi..
test 2 review questi..

... B. RS affects the value of the low-pass breakpoint associated with C2. C. If R1 is decreased, the value of the gain will decrease, but the breakpoint frequencies for the overall circuit will not be affected. D. None of the other answers is correct. ...
AN708 Low-Power Universal-Input Power Supply Achieves High
AN708 Low-Power Universal-Input Power Supply Achieves High

... Switching losses are estimated at 350 mW. Since the thermal resistance is specified at 80_C/W, a total temperature rise of 47_C is expected. This permits operation up to approximately 50_C ambient temperature, while holding the maximum junction temperature to 100_C. Something of more concern for uni ...
Selecting the Optimum Transient Voltage Suppressor
Selecting the Optimum Transient Voltage Suppressor

LCM-40(DA), LCM-60(DA) installation manual
LCM-40(DA), LCM-60(DA) installation manual

... ‧Use suitable mounting tools to do the wiring and mounting (see 5) ‧Use a MCB (miniature circuit breaker) with an adequate current rating to protect the lighting system (see 6) ...
MAX1595 Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump General Description
MAX1595 Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump General Description

... Using white LEDs to backlight LCDs is an increasingly popular approach for portable information devices (Figure 2). Because the forward voltage of white LEDs exceeds the available battery voltage, the use of a charge pump such as the MAX1595 provides high efficiency, small size, and constant light o ...
LM2704 Micropower Step-up DC/DC Converter
LM2704 Micropower Step-up DC/DC Converter

... The input bypass capacitor CIN, as shown in Typical Application Circuit, must be placed close to the IC. This will reduce copper trace resistance which effects input voltage ripple of the IC. For additional input voltage filtering, a 100nF bypass capacitor can be placed in parallel with CIN to shunt ...
Capacitor Discharge Lab
Capacitor Discharge Lab

meg ohmmeter
meg ohmmeter

... (V -1). Leakage. due to moisture or dirt can be eliminated by wiping the UNKNOWN terminals with a clean dry cloth. Grid-current effects can· occur when V -1 has been replaced with a new tube. or when the instrument has not been used for some time. The grid-current effect will be eliminated or reduce ...
Switchgear & Protection
Switchgear & Protection

... secondary voltage must be accurate representation of the primary voltage in both magnitude and phase. To meet this requirement, they are designed to operate at low flux densities so that Ie , ration and phase angle errors are small. This larger than that of power transformer, which increase the over ...
RT9241A/B - Tehnari.ru
RT9241A/B - Tehnari.ru

... PWM controller, the output voltage is locked at the VREF of error amplifier and the error signal is used as the control signal VC of pulse width modulator. The PWM signals of different channels are generated by comparison of EA output and split-phase saw-tooth wave. Power stage transforms VIN to out ...
Datasheet - Monolithic Power System
Datasheet - Monolithic Power System

... sense amplifier output, and the current comparator’s output is low. The rising edge of the CLK signal (its frequency is the operating frequency) sets the RS flip-flop. Its output turns on the MOSFET that connects the SW pin and inductor to the input supply. The current sense amplifier detects and am ...
LVDS Driver
LVDS Driver

Measuring short time intervals - Veletrh nápadů učitelů fyziky
Measuring short time intervals - Veletrh nápadů učitelů fyziky

... intervals can be indistinguishable for some computer measuring systems.) And furthermore our experiment is a nice motivation for the study of capacitors and RC circuits. Our device is not a “measuring instrument”, in fact. It is nothing more than several elements connected together. And it can be ma ...
Step-Down Converter with Cable Voltage Drop
Step-Down Converter with Cable Voltage Drop

AVO
AVO

... The L.C.D. display incorporates an analogue-style arc (for varying levels) as well as a 312⁄ digit display (for accurate results). The data hold button can be pressed at any time to store the measurement (digital and analogue values) to facilitate viewing after moving the instrument to a more access ...
HX-CB loadbreak fuse cutout COOPER POWER SERIES Fusing Equipment
HX-CB loadbreak fuse cutout COOPER POWER SERIES Fusing Equipment

... HX-CB loadbreak fuse cutout Description Eaton's Cooper Power™ series HX-CB loadbreak fuse cutout provides superior performance with the combination of the field-proven HX cutout and a compact, low profile loadbreak interrupter. The loadbreak interrupter is in the current path momentarily when interr ...
SSAC T2D Series Lockout With Random Start HVAC/R Timers
SSAC T2D Series Lockout With Random Start HVAC/R Timers

AN-1885 LM22670 Evaluation Board (Rev. D)
AN-1885 LM22670 Evaluation Board (Rev. D)

... To aid in the design and evaluation of DC/DC buck converter solutions based on the LM22670 switching regulator, the evaluation board can be re-configured for different output voltages. The evaluation board is designed to highlight applications with a small solution size. This implies that there will ...
TechTopics
TechTopics

The Tesla Plasma Engine
The Tesla Plasma Engine

Using the AEA 20/20 TDR
Using the AEA 20/20 TDR

... fuse in the MyDAQ. Take care to prevent this. Keep your bench and wiring neat, always hook the power and ground to the same points on your circuit board, always use the same colors so you recognize them (red, black, white are typically used), etc. 3) If you do blow a fuse: Instructions for changing ...
How to Select an Appropriate ESD Device
How to Select an Appropriate ESD Device

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Electrical ballast



An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.
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