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Introduction to Communication Systems
Introduction to Communication Systems

MAX6968 8-Port, 5.5V Constant-Current LED Driver General Description Features
MAX6968 8-Port, 5.5V Constant-Current LED Driver General Description Features

... The MAX6968 LED driver comprises a 4-wire serial interface driving eight constant-current sinking opendrain output ports. The outputs drive LEDs in either static or multiplex applications (Figure 1). The constantcurrent outputs are guaranteed for current accuracy not only with chip-supply voltage va ...
LM317 - Sparkfun
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... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
High Switching Frequency for Sinusoidal Pulse Width Modulation
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... Fig.1 One phase leg of an inverter with (a) two levels, (b) three levels, (c) n levels III. CONTROLLER DES IGN To control the flow of power in the converter, the switches interchange between two states. This happens quickly enough that the inductors and capacitors at the I/P & O/P hubs of the conver ...
PowerLogic Circuit monitor series 4000
PowerLogic Circuit monitor series 4000

... connections and embedded web server. They are Transparent Ready. These devices are designed for applications where power quality and availability are critical factors. They are generally used at service entrances and interconnection points or on circuits feeding sensitive equipment. Due to their ver ...
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TPS54900 数据资料 dataSheet 下载

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... between a P-type and Ntype semiconductorcreated in a single crystal of semiconductor by doping, for example by ion implantation,diffusion of dopants, or by epitaxy (growing a layer of crystal doped with one type of dopant on top of a layer of crystal doped with another type of dopant). If two separa ...
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... THAT Corporation's technical support group at [email protected] ...
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... (5) The variations arise from temporary separation of parts of the system from the main system. (6) The variations are from causes beyond the control of the Company. (7) Such fluctuations are caused solely by the load of one particular customer which does not affect the voltage of other customers in ...
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... Physics 102 Ohm’s Law Elizabeth Silva and Maria Zavala January 30, 2006 Abstract: The purpose of this lab is to test the current intensity and potential differences when conductors of different resistance are connected in varies circuits. Equipment: ● Digital voltmeter ● Digital Ammeter ● Resistors ...
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... designed for 5V-input step-down applications. It features a 55mΩ (typ) PMOS switch and a 60mΩ (typ) NMOS synchronous-rectifier switch. Simple constant-offtime control allows switching frequencies up to 350kHz. Adjust the off-time with an external resistor RTOFF to optimize performance trade-offs amo ...
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...  A way to enable quick access to a favorite frequency on your transceiver is to store the frequency in a memory channel.  A disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers is it does not transmit or receive as effectively as a full-sized antenna.  A good r ...
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... ½VS at the inverting input. The LDR, of resistance RLDR is connected in series with a fixed resistor of resistance F. If RLDR > F (that is, the LDR is in darkness), then V + > V – and the output is positive. If RLDR < F (that is, the LDR is in daylight), then V + < V – and the output is negative. It ...
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... angle of horizontal curvature on a flat surface, is most commonly used. Gyro sensors are installed in the majority of modern navigation systems. In locations that do not allow for proper reception of a GPS (Global Positioning System) signal, including tunnels, parking garages and valleys in between ...
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... At the left-hand side of the figure, the first block is a differential input stage with emitter followers (Ql and Q2) driving common-base stages (Q3 and Q4). The transistors Q5 and Q6 form an active load for Q3 and Q4. Transistors Q7, Q5, Q6 and their emitter resistances form a simple current mirror ...
C270 Stereo Power Amplifier
C270 Stereo Power Amplifier

No Slide Title
No Slide Title

... ◊ Use a properly designed power supply with input and output capacitors. ...
1E6 ELECTRICAL ENGINEERING [5 credits]
1E6 ELECTRICAL ENGINEERING [5 credits]

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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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