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Power System Fundamentals
Power System Fundamentals

... • To make the motor run quietly by reducing magnetic hum ...
Remote controlled practical education for Power Electronics
Remote controlled practical education for Power Electronics

... and subsystems for different application fields. Typical modules are CPU’s, memories, interfaces but also modulators. For high volume markets these modules may be integrated on a single chip resulting in a SoC, One of the application fields is power electronics, as it requires high speed real-time s ...
Voltmeters and ammeters are used to measure voltage and current
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... measure. For example, a galvanometer with a current sensitivity of 50 μA has a maximum deflection of its needle when 50 μA flows through it, is at the scale's halfway point when 25 μA flows through it, and so on. If such a galvanometer has a 25-Ω resistance, then a voltage of only V = IR = (50 μA)(2 ...
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... PTCs operate as a positive temperature coefficient device. High temperatures and excessive current will cause the device resistance to increase until it limits the unsafe current level. Upon reaching the design temperature/current limit, the PTC will effectively “open” the circuit to provide protect ...
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... Because of its ability to source up to 1 mA, the reference can also be used as a system reference. Implemented with a CMOS process, the device is designed for single supply operation from 2.7 V to 5.5 V. It is available in an 8-pin SOIC package to reduce board space in standard commercial, industria ...
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MP7752 - Monolithic Power System

... The amplifier has fully differential outputs and inputs. The differential input is useful to minimize the common-mode noise (any noise that appears on both input lines of the channel). This device can still be used with a single-ended input. The MP7752 includes eight high-power MOSFETs wherein for e ...
PAM2800 Description Pin Assignments
PAM2800 Description Pin Assignments

... B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regul ...
A Monolithic Low-Distortion Low-Loss Silicon-on-Glass Varactor-Tuned Filter With Optimized Biasing
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... For large tone-spacing this condition can be satisfied by an integrated resistor, but the resistance value—and hence the required die area—can become prohibitively large for even moderate tone spacings. A simple way to implement the high impedance at the centertap, while keeping the area required fo ...
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How Advanced Energy, MDX Products Manage Arcs

... films. It should be pointed out that even though Sparc-le has been shown to be very effective in sputtering insulative films formed reactively from conductive targets, Sparc-le will not work to permit dc to sputter thick, truly insulative targets. This is true because thick targets charge up so rapi ...
Individual capacitor voltage balancing in H
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... STATCOM) in literature. Sorting algorithm needs current sign information to provide a correct sorting pattern. As a consequence, when the exchanging current that flows in the cells is zero the sorting algorithm is unable to take the correct insertion decision for proper balancing of the capacitor vo ...
CAT4003B - Constant Current Programmable LED Driver
CAT4003B - Constant Current Programmable LED Driver

... must remain high for at least TSETUP delay (10 ms minimum) to allow the LED driver to complete its power−up. After this delay, EN/DIM can be pulsed in order to set the LED current to the desired level. Each pulse width should be between 1 ms and 500 ms. Pulses faster than the minimum TLO may be igno ...
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... The CM-MPS.x1 are multifunctional monitoring relays for three-phase mains. They monitor the phase ­parameters phase sequence, phase failure, over- and undervoltage and phase unbalance. CM-MPS.11 and CM-MPS.21 also monitor the neutral for interruption. The threshold values for over- and undervoltage ...
Chapter 8
Chapter 8

mobile snooper ( improvised mobile bug)
mobile snooper ( improvised mobile bug)

... input gets more voltage than the – input. After a few seconds, output goes low because the output current passes to the – input through R2. Meanwhile, capacitor C1 also charges. So that both the inputs gets almost equal voltage and the output remains low. 0.22 capacitor (no other capacitor can be su ...
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... For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. ...
Contributions to Low-Cost, Non-Resonant Electronic Ballasts
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... By using the iterative method proposed in Fig. 7 and for a desired output power close to lamp rated power (P(R) ≈ 32 W), CF smaller than 1.7 and as low as possible, duty cycle as close to 50% as possible (as mentioned before) and restricting the operating frequency between 20 kHz and 70 kHz (to avoi ...
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... 3.001 How do transformers work? Transformers are devices that transform voltage up or down by magnetic means. Alternating current (AC) flowing in a primary coil establishes an alternating magnetic flux in a "core" that easily conducts this flux. If another coil (called a "secondary" coil) is positi ...
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MAX6977 8-Port, 5.5V Constant-Current LED Driver with LED Fault Detection General Description
MAX6977 8-Port, 5.5V Constant-Current LED Driver with LED Fault Detection General Description

... into the MAX6977 8-bit shift register on its rising edge. LE is the load input of the MAX6977 latch, which transfers data from the MAX6977 8-bit shift register to its 8bit latch when LE is a high (transparent latch), and latches the data on the LE falling edge of LE (Figure 2). The rising edge of LE ...
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Rectifier



A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves, copper and selenium oxide rectifiers, semiconductor diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches. Historically, even synchronous electromechanical switches and motors have been used. Early radio receivers, called crystal radios, used a ""cat's whisker"" of fine wire pressing on a crystal of galena (lead sulfide) to serve as a point-contact rectifier or ""crystal detector"".Rectifiers have many uses, but are often found serving as components of DC power supplies and high-voltage direct current power transmission systems. Rectification may serve in roles other than to generate direct current for use as a source of power. As noted, detectors of radio signals serve as rectifiers. In gas heating systems flame rectification is used to detect presence of a flame.Because of the alternating nature of the input AC sine wave, the process of rectification alone produces a DC current that, though unidirectional, consists of pulses of current. Many applications of rectifiers, such as power supplies for radio, television and computer equipment, require a steady constant DC current (as would be produced by a battery). In these applications the output of the rectifier is smoothed by an electronic filter (usually a capacitor) to produce a steady current.More complex circuitry that performs the opposite function, converting DC to AC, is called an inverter.
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