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lecture1424353332
lecture1424353332

Serial Communication
Serial Communication

...  Output High -> Input High:  Output sources current -> Input sinks current ...
MAX5039, MAX5040
MAX5039, MAX5040

... Note 2: SDO automatically goes low when the UVLO pin drops below its threshold (or VCC drops below 2.5V). SDO remains low as VCC falls. For some VCC below VCCLO SDO may float. Note 3: This undervoltage lockout disables the MAX5039/MAX5040 at VCC voltages below which the device cannot effectively ope ...
ADM690 数据手册DataSheet 下载
ADM690 数据手册DataSheet 下载

... during battery backup. This MOSFET has very low input-tooutput differential (dropout voltage) at the low current levels required for battery back up of CMOS RAM or other low power CMOS circuitry. The supply current in battery back up is typically 0.6 µA. The ADM690/ADM691/ADM694/ADM695 operates with ...
LTM4611 - Ultralow VIN, 15A DC/DC uModule Regulator
LTM4611 - Ultralow VIN, 15A DC/DC uModule Regulator

... The LTM®4611 is a high density 15A output, switch mode DC/DC buck converter power supply capable of operating from very low voltage input supplies. Included in the package are the buck switching controller, power FETs, inductor and loop-compensation components. The LTM4611 delivers up to 15A continu ...
LMx93, LM2903 Dual Differential Comparators
LMx93, LM2903 Dual Differential Comparators

... Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absol ...
Dimmers Buying Guide - Leviton Home Solutions
Dimmers Buying Guide - Leviton Home Solutions

... What makes dimming a dimmable LED/CFL bulb different than dimming an incandescent bulb? Dimmable LED/CFL bulbs contain electronic circuitry not present in incandescent bulbs. Therefore, it is difficult to achieve the same smooth start and complete dimming range as one sees with incandescent bulbs. U ...
PMM8920 Power Management Module Device Specification
PMM8920 Power Management Module Device Specification

... PM8821 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 ...
LTM4600HV - 28VIN High Efficiency DC/DC uModule
LTM4600HV - 28VIN High Efficiency DC/DC uModule

... The LTM4600HV contains an integrated LTC constant on-time current-mode regulator, ultra-low RDS(ON) FETs with fast switching speed and integrated Schottky diode. The typical switching frequency is 850kHz at full load. With current mode control and internal feedback loop compensation, the LTM4600HV m ...
Surge Suppression Catalog
Surge Suppression Catalog

... protection methodology. The second tier of protection in the ALLTEC Protection Pyramid™ comes from properly installed surge protection devices which diminish the significance of random, high energy, short duration electrical power transients. These occurrences are typically caused by atmospheric phe ...
Low Cost TRIAC Control with MSP430 16-Bit
Low Cost TRIAC Control with MSP430 16-Bit

... Triac circuit development can be simplified by using triacs designed for low-gate current requirements which may be directly driven by microcontroller outputs. They are suitable for controlling load currents in the 0.5 A–1 A range. However, the triac gate-control circuitry used is designed to fire c ...
Protection against lightning effects
Protection against lightning effects

EE6303 Click here to
EE6303 Click here to

10-1000 kW Operation
10-1000 kW Operation

AD5757 - Farnell
AD5757 - Farnell

... On-chip reference (±10 ppm/°C maximum) −40°C to +105°C temperature range ...
Programming manual
Programming manual

Design and protective measures of a Power Factor
Design and protective measures of a Power Factor

... the power system is constantly changing due to variations in the size and number of the motors being used at one time. This makes it difficult to balance the inductive and capacitive loads continuously. Wasted energy capacity, also known as poor power factor, is often overlooked. It can result in po ...
LTC1726 - Triple Supply Monitor and µP
LTC1726 - Triple Supply Monitor and µP

... functions intended for systems with multiple supply voltages. The part has a common open-drain reset output with an adjustable delay. The reset and watchdog time-out periods are both adjustable using external capacitors. ...
Handwriting enabled harvested piezoelectric power using ZnO nanowires/polymer composite on paper substrate
Handwriting enabled harvested piezoelectric power using ZnO nanowires/polymer composite on paper substrate

... 4a) i.e. no bending, no c-axis potential gradient along the ZnO NWs will be observed. Nevertheless, when the NWs are bent, there will be two possible distinct situations. These two situations are illustrated in Figure 4b-c. In the situation of Figure 4b, the bending of the NWs leads to create a piez ...
Data Sheets
Data Sheets

74HC/HCT4051
74HC/HCT4051

Aalborg Universitet Grid-Current-Feedback Active Damping for LCL Resonance in Grid-Connected Voltage-
Aalborg Universitet Grid-Current-Feedback Active Damping for LCL Resonance in Grid-Connected Voltage-

... impedances and hence system LCL resonance frequencies may vary widely. As a precaution, the external active damping is recommended, especially in the power-electronics-based power systems, where the interactions among multiple converters may lead to harmonic instability if not damped appropriately [ ...
Current measurement in power electronic and
Current measurement in power electronic and

BQ2084-V150 数据资料 dataSheet 下载
BQ2084-V150 数据资料 dataSheet 下载

... and enables the 0-V/precharging FET. If NR in Misc Config is set, then the PRES input can be left floating as it is not used. ...
Fundamentals and Advancements in Generator
Fundamentals and Advancements in Generator

< 1 ... 17 18 19 20 21 22 23 24 25 ... 947 >

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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