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Catalog - All Pages | Nexxus Lighting
Catalog - All Pages | Nexxus Lighting

... to have instant access to pre-assigned scenes, each scene having a limit of 1000 different steps.In addition to the eight assigned scenes, there are 247 other scenes available for playback. These then are accessible through the next/ previous buttons, or can be set to run sequentially with an accura ...
TIP140T / TIP141T / TIP142T NPN Epitaxial Silicon Darlington Transistor T IP
TIP140T / TIP141T / TIP142T NPN Epitaxial Silicon Darlington Transistor T IP

... listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to- ...
General Specifications UP55A Program Controller
General Specifications UP55A Program Controller

... the value of a target setpoint (SP) according to a given program pattern that varies with time. The controller stores two or more program patterns and the operator can switch between them according to the operating status. Each program pattern consists of multiple line segments (program segments). T ...
Measurement methods
Measurement methods

... • The voltage meter “M” measures the voltage drop between the Drain and Source • If the protection diode is present and the part mounted correctly the voltage meter should measure a forward biased diode voltage near 0.7V ...
Dynamics and mechanics of motor
Dynamics and mechanics of motor

... proteins can aggregate into filamentous structures, respectively called actin-filaments and microtubules. The two filament ends have different properties and define an orientation for a filament that can be characterized by a vector. Interactions with a large number of proteins make the network of a ...
Industrial Current/Voltage Output Driver with Programmable Ranges AD5748
Industrial Current/Voltage Output Driver with Programmable Ranges AD5748

... ranges: 4 mA to 21 mA and 0 mA to 21 mA. Voltage output is provided from a separate pin that can be configured to provide 0 V to 5 V, 0 V to 10.5 V, or ±10.5 V output range. Analog outputs are short-circuit and open-circuit protected and can drive capacitive loads of 2 μF and inductive loads of 0.1 ...
application considerations for high resistance ground
application considerations for high resistance ground

... existing system. If the existing system is solidly grounded and it is desired to obtain the benefits associated with the continuity of service, one must consider all the loads applied to the substation. Do any feeders serve single-phase line-toneutral connected loads? If so, determine the total KVA ...
MAX9986A SiGe High-Linearity, 815MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch General Description
MAX9986A SiGe High-Linearity, 815MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch General Description

... RF Port Return Loss LO1/2 port selected, LO2/1 and IF terminated ...
A MATLAB/GUI BASED FAULT SIMULATION TOOL FOR POWER
A MATLAB/GUI BASED FAULT SIMULATION TOOL FOR POWER

... fault more understandable and lasting to the students. Graphical User Interfaces (GUI) is one of the visual tools to provide the user with interactive visual communication with the tasks on hand and the solution process. With GUI, the student can start applying the application software to solve the ...
Guidelines for the Design, Installation, Operation
Guidelines for the Design, Installation, Operation

FFPF15S60S 15 A, 600 V, STEALTH II Diode TM
FFPF15S60S 15 A, 600 V, STEALTH II Diode TM

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UMC4N Features Mechanical Data
UMC4N Features Mechanical Data

... indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more U ...
ProSafe Isolation Transformer - Marlow
ProSafe Isolation Transformer - Marlow

Razor: A Low-Power Pipeline Based on Circuit-Level Timing
Razor: A Low-Power Pipeline Based on Circuit-Level Timing

BRCD016GWZ-3
BRCD016GWZ-3

... Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC i ...
MAX1178/MAX1188 16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Range General Description
MAX1178/MAX1188 16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Range General Description

... The MAX1178/MAX1188 16-bit, low-power, successiveapproximation analog-to-digital converters (ADCs) feature automatic power-down, a factory-trimmed internal clock, and a byte-wide parallel interface. The devices operate from a single +4.75V to +5.25V analog supply and feature a separate digital suppl ...
Snubber Circuits
Snubber Circuits

... A turn-on snubber as shown in Figure 7 is used to reduce voltage across the BJT while the current builds up. The reduction in the voltage across the transistor during turnon is due to the voltage drop across the snubber inductance LS. When the transistor turns off, the energy stored in the snubber i ...
MAX1968/MAX1969 Power Drivers for Peltier TEC Modules General Description Features
MAX1968/MAX1969 Power Drivers for Peltier TEC Modules General Description Features

... the TEC. On-chip FETs minimize external components while providing high efficiency. A 500kHz/1MHz switching frequency and a unique ripple cancellation scheme reduce component size and noise. The MAX1968 operates from a single supply and provides bipolar ±3A output by biasing the TEC between the outp ...
Keor T 80-120 kVA
Keor T 80-120 kVA

... Conduct on Energy efficiency and Quality of European of AC UPS defined by EC. KEOR T represents the best solution combining high performance, low management costs and ease of operation and maintenance: • Dual Input • User friendly touch screen design • UPS via LED bar (with traffic light coding) giv ...
republic of south africa - Department of Public Works
republic of south africa - Department of Public Works

... All component parts, cables and other connections shall be amply rated to withstand the overloads stated and maintain the input voltage at the load within the tolerances stated. The equipment shall be designed for the maximum operating efficiency. The efficiency shall be determined when the system ...
Technical Article - Polymeric Insulators
Technical Article - Polymeric Insulators

... The basic designs of polymer insulators evolve around three essential components. These are, a core, a sheath or weathersheds and metal end fittings. The end fittings are attached to the core in various ways to develop the required mechanical strength for the intended application. The core consists ...
Voltage Reference - Elettronica INFN Lecce
Voltage Reference - Elettronica INFN Lecce

AN162 : Power On Conditions for the X9258
AN162 : Power On Conditions for the X9258

... V- must go to a negative value first because this controls the substrate voltage, which must be stable prior to the VCC turn on. This is because the Power on Recall circuit, which recalls the E2 memory contents, has a VCC trip point of about 2.2 volts when V- is in the range of -2.7 to -5.0 volts. B ...
PAM3102 Description Pin Assignments
PAM3102 Description Pin Assignments

... feature high output voltage accuracy, low quiescent current and low dropout voltage, making them ideal for battery powered applications. The line transient response and load transient response are excellent. Their high PSRR make them useful in applications where AC noise on the input power supply mu ...
Introduction to Short Circuit Current Calculations
Introduction to Short Circuit Current Calculations

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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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