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umatr - Atkinson Electronics Inc
umatr - Atkinson Electronics Inc

... The UMATR can be powered by a 12 to 40V DC supply. The current drawn from the power supply through a dropping resistor is proportional to the selected input signal differential. The UMATR uses a NSC LN10CN IC chip which provides a voltage reference to power a variety of sensors. Each UMATR is factor ...
6100B/6105A Electrical Power Standards Extended Specifications
6100B/6105A Electrical Power Standards Extended Specifications

... accuracy specification in “Current DC and Harmonic Amplitude Specifications” and “Current Distortion and Noise” may be required. Calculation of the “adders” is described below. Compliance voltage at the end of connecting leads will be reduced by the IR drop in the cables. The current output will rem ...
Electrical 2
Electrical 2

AN51 - Power Conditioning for Notebook and
AN51 - Power Conditioning for Notebook and

... Regulator The LT1432 is a control chip designed to operate with the LT1170 or LT1270 family of switching regulators to make ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,

... switching techniques are used in PWM DC-DC converters to reduce switching losses and electromagnetic interference (EMI). The pulse width modulation (PWM) technique is highly regarded for its high power capability, fast transient response and ease of control. PWM dc–dc converters have been widely use ...
03_Op_Amps-JAGv5
03_Op_Amps-JAGv5

... decreases the amplitude of voltage and current in the circuit. Often we wish to take a small voltage or current and amplify it, so that we can measure it with greater precision. We might also want to add, subtract, multiply, divide, integrate or differentiate two or more voltage or current amplitude ...
MAX9945 Evaluation Kit Evaluates: General Description Features
MAX9945 Evaluation Kit Evaluates: General Description Features

... 1) Connect the positive terminal of the +15V supply to VCC (TP1) and the GND terminal to GND (TP4). Connect the negative terminal of the -15V supply to VEE (TP2) and the GND terminal to GND (TP3). The power supply should be off. 2) Connect the positive terminal of the precision voltage source to I ...
An interface board for developing control loops in power electronics
An interface board for developing control loops in power electronics

... capacitive isolators providing also voltage level shifting (up to 5 V) and higher I/O current capability (up to 15 mA per I/O). I/O capability is limited by the selected platform. On one ChipKit Uno32 the original microcontroller was replaced with a more powerful dsPIC more suitable for controlling ...
isobar® - Parts Express
isobar® - Parts Express

... Brownouts are low voltage power sags which put a strain on your computer and other electronic equipment. Under low voltage conditions, your equipment's internal power supply and circuitry must compensate by working harder. Repeated exposure to brownouts can overheat these sensitive components, causi ...
FAN7930B Critical Conduction Mode PFC Controller FAN7930B — Criti c
FAN7930B Critical Conduction Mode PFC Controller FAN7930B — Criti c

Aalborg Universitet Distributed Voltage Unbalance Compensation in Islanded Microgrids by Using Dynamic-Consensus-Algorithm
Aalborg Universitet Distributed Voltage Unbalance Compensation in Islanded Microgrids by Using Dynamic-Consensus-Algorithm

... VCB by decreasing the negative sequence voltage in DG sides (from VSN1 , VSN2 to VSN1 ' , VSN2 ' , respectively), as shown in Fig. 3 (a). In addition, if VSN1 and VSN2 are equally adjusted ( VSN1 ' = VSN2 ' ), the negative sequence current flow ISN1 and ISN2 will remain unchanged. By apply ...
(1)Ceramic capacitor
(1)Ceramic capacitor

DC/DCC HO Diesel Sound Decoder For Walthers GP15-1
DC/DCC HO Diesel Sound Decoder For Walthers GP15-1

... All notching along with increased speeds were also part of the recording process. Unlike some others, we do not use simply increase volume or frequency of the prime mover sound to simulate the notching process. The decoder has presets for all of its functions, so no adjustments should be required. H ...
technical information
technical information

... modulator and maximum supply voltages for the power stage. Depending on the maximum supply voltage, the feedback ratio will need to be adjusted to maximize performance. The values of feedback network R12, R15, R23, R24, R8, and R25 (see figure 4) define the gain of the modulator for channel 1 (see e ...
Electrical Machines I
Electrical Machines I

... 1. Armature reaction (neutral plane shift + flux weakening):  If the magnetic field windings of a DC machine are connected to the power source and the rotor is rotated by prime miver, a voltage will be induced in the conductors of the rotor.  This voltage is rectified and can be supplied to extern ...
A Decade Bandwidth, Low Voltage, Medium Power Class B Push-
A Decade Bandwidth, Low Voltage, Medium Power Class B Push-

CA3130, CA3130A Datasheet
CA3130, CA3130A Datasheet

... down to 0.5V below the negative supply rail, and the output can be swung very close to either supply rail in many applications. Consequently, the CA3130 Series circuits are ideal for single-supply operation. Three Class A amplifier stages, having the individual gain capability and current consumptio ...
7.3 Voltage EmergenciesPDF
7.3 Voltage EmergenciesPDF

... • The TO will review and request adjustments to generator excitation (within  approved bandwidth) so units absorb reactive power as modeled in the reported  unit D‐curve • Generation should operate at the lower bandwidth of their voltage schedule  when possible • Example: A generator following a vol ...
R24V-5M-D5-CW Manual
R24V-5M-D5-CW Manual

... Before installation, always build a pre-installation assembly and confirm that all lighting is properly connected and functional. RIBBON light is rated only for use with a voltage specific DC Class 2 constant voltage power source. Power supplies are rated for maximum power output at optimum thermal ...
Electronic Ballasts - Lightline Electronics
Electronic Ballasts - Lightline Electronics

... In the head, VOR and VOH run directly to the terminals of the globe (Figure 3). The ground wire is connected to the lamp housing. The igniter's power line and VOR are connected to the primary step-up transformer of the igniter circuit. This transformer steps voltage up to about 5000 volts. From ther ...
Keysight Technologies Right Load Switching and Simulation Design
Keysight Technologies Right Load Switching and Simulation Design

3-Phase BLDC Motor with Hall Sensors and Speed Closed Loop
3-Phase BLDC Motor with Hall Sensors and Speed Closed Loop

... uses an electric commutator, replacing the mechanical commutator and making it more reliable than the DC motor. In BLDC motors, rotor magnets generate the rotor’s magnetic flux, allowing BLDC motors to achieve higher efficiency. Therefore, BLDC motors may be used in high-end white goods (refrigerato ...
LT1372/LT1377 500kHz and 1MHz High Efficiency 1.5A Switching
LT1372/LT1377 500kHz and 1MHz High Efficiency 1.5A Switching

... which reduces output overshoot. The feedback input also invokes oscillator frequency shifting, which helps protect components during overload conditions. When the feedback voltage drops below 0.6V, the oscillator frequency is reduced 5:1. Lower switching frequency allows full control of switch curre ...
Eaton 9390 UPS
Eaton 9390 UPS

... Power factor (PF) describes the slight phase shift between voltage applied to a circuit and current that the circuit draws in response to the applied voltage. The maximum power factor possible is unity (1.0), or no phase shift between the voltage applied and the circuit current response—maximum tran ...
iNDustrial PoWer resistors
iNDustrial PoWer resistors

... Duty cycle and power ...
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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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