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Features Pin Configuration Description Pin Description
Features Pin Configuration Description Pin Description

... A power-on reset function puts the registers in their default state and initializes the I2C bus state machine with no channels selected. The pass gates of the multiplexer are constructed such that the VCC pin can be used to limit the maximum high voltage that is passed by the PI4MSD5V9540B. This all ...
BD9848FV
BD9848FV

... products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The fol ...
How to Use bq27505 in a Smart Phone System Application Report ......................................................................................
How to Use bq27505 in a Smart Phone System Application Report ......................................................................................

... determined to be in charge mode, discharge mode, or relaxation mode. In this design example, the smart phone average discharge current during normal operation is between 70 mA and 300 mA. The discharge current threshold must set to 60 mA. As long as the battery discharge current is above 60 mA, the ...
Wireless Inductive Charging for Low Power Devices
Wireless Inductive Charging for Low Power Devices

... are equal and therefore cancel each other. Resonance of a circuit involving capacitors and inductors occurs because the collapsing magnetic field of the inductor generates an electric current in its windings that charges the capacitor, and then the discharging capacitor provides an electric current ...
Reverse-Logic Control of Load Tap Changers in Emergency Voltage
Reverse-Logic Control of Load Tap Changers in Emergency Voltage

... Assuming a structure like in Fig. 7, a cluster is now made up of the EHV-HV transformers feeding the same sub-transmission area together with all HV-MV transformers located downstream. For all LTCs within a cluster, the reverse logic is triggered by the voltage V at a single, representative transmis ...
Voltage Regulation at Sites With Distributed
Voltage Regulation at Sites With Distributed

... the transformer load is calculated as a circulating current and the AVR measurement circuit is biased to prevent the flow. This effect can be diminished by a reduction of the circulating current bias setting to a level that is sufficient to maintain paralleled transformers at the correct tap positio ...
CONVEXITY OF RESISTIVE CIRCUIT CHARACTERISTICS
CONVEXITY OF RESISTIVE CIRCUIT CHARACTERISTICS

Aalborg Universitet Electronics-Based Power Systems
Aalborg Universitet Electronics-Based Power Systems

AD8250 i Programmable Gain Instrumentation Amplifier
AD8250 i Programmable Gain Instrumentation Amplifier

... The AD8250 user interface consists of a parallel port that allows users to set the gain in one of two ways (see Figure 1). A 2-bit word sent via a bus can be latched using the WR input. An alternative is to use the transparent gain mode where the state of the logic levels at the gain port determines ...
WTMR - Vishay Presicion Group
WTMR - Vishay Presicion Group

... All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contain ...
FEATURES DESCRIPTION D
FEATURES DESCRIPTION D

... requires approximately 400µs to achieve specified VOS accuracy, which includes one full auto-zero cycle of approximately 100µs and the start-up time for the bias circuitry. Prior to this time, the amplifier will function properly but with unspecified offset voltage. This design has virtually no alia ...
R5011ANJ
R5011ANJ

... "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. ...
parasitic-oscillatio..
parasitic-oscillatio..

... The EPS uses a Hammond 270BX and provides both AC and DC filament supplies. In my case it's built into the same chassis as my power amp (which came out very nicely, indeed). The AC supply is straight off the tranny with two 100ohm resistors to a center ground, and in my case is feeding a pair of 6V6 ...
HEWLETT-PACKARD JOURNAL
HEWLETT-PACKARD JOURNAL

... null detector for indicating the volt age differential between the known divider output and an unknown voltage. These basic instruments can be combined to measure or pro duce dc voltages with accuracies limited only by the linearity of the voltage divider and the accuracy of the reference voltage. I ...
(Dynamic) Voltage (Frequency)
(Dynamic) Voltage (Frequency)

... has high dynamic performance (a strong device can operate at a given frequency at a lower than nominal voltage), but it also has a higher leakage current which causes higher power dissipation when operated at a nominal voltage. Because of process variations, the supply voltage of each device can be ...
Voltage Reference Circuits
Voltage Reference Circuits

Performing Cyclic Voltammetry Measurements Using
Performing Cyclic Voltammetry Measurements Using

BD6369GUL
BD6369GUL

... ・・・・・① ...
RHRD660S9A_F085 6A, 600V Hyperfast Diodes Features
RHRD660S9A_F085 6A, 600V Hyperfast Diodes Features

... Fairchild Semiconductor Corporation’s Anti-Counterfeiting Policy. Fairchild’s Anti-Counterfeiting Policy is also stated on our external website, www.Fairchildsemi.com, under Sales Support. Counterfeiting of semiconductor parts is a growing problem in the industry. All manufactures of semiconductor p ...
Mitigation of voltage sags/swells to enhance Power Quality of
Mitigation of voltage sags/swells to enhance Power Quality of

... correcting voltage, correction of any anomalies in the series voltage injection and termination of the trigger pulses when the event has passed. The controller may also be used to shift the DC-AC inverter into rectifier mode to charge the capacitors in the DC energy link in the absence of voltage sa ...
AAT4670 数据资料DataSheet下载
AAT4670 数据资料DataSheet下载

... capability over tantalum capacitors to withstand input current surges from low impedance sources such as batteries in portable devices. ...
What is a meter
What is a meter

... electrical power to operate (unlike electromagnetic meter movements, which are more compact and actuated by the power of the measured signal current going through them). They are also much more fragile than other types of electrical metering devices. Usually, cathode ray tubes are used in conjunctio ...
FDD6680AS 30V N-Channel PowerTrench SyncFET
FDD6680AS 30V N-Channel PowerTrench SyncFET

... Thermal characterization performed using the conditions described in Note 1b. Transient thermal response will change depending on the circuit board design. ...
Evaluates: MAX8550/MAX8550A/MAX8551 MAX8550 Evaluation Kit General Description Features
Evaluates: MAX8550/MAX8550A/MAX8551 MAX8550 Evaluation Kit General Description Features

LM25061 Positive Low Voltage Power Limiting Hot Swap Controller
LM25061 Positive Low Voltage Power Limiting Hot Swap Controller

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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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