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Article for Elektuur – August 2008
Article for Elektuur – August 2008

... What is somewhat peculiar in this circuit is the presence of Rx, whose purpose will be fully explained later. Basically, it supplies an extra current to the cathode resistor Rk2. In the schematics, you will notice that :a) there are two separate power supplies (see Fig.#3 and Table#2 for details), o ...
Phase sensitive detection Chapter 16
Phase sensitive detection Chapter 16

... Provided that the background level remains the same no matter which source the detector sees, the magnitude of the alternating voltage, V, is unaffected by the background. The system hence suppresses the effects of any common background level as well as producing an alternating signal. In principle ...
Transformer problems (Due Tuesday 25th March (PAYDAY
Transformer problems (Due Tuesday 25th March (PAYDAY

... EASY (10 points) A transformer has 10 turns on its primary coil and 30 turns on the secondary. 1. If the primary voltage is 2 V, what is the secondary voltage? 2. A transformer has 20 turns on the primary coil and 2 turns on the secondary. If the primary voltage is 100 V, what is the secondary volta ...
Electricity Electricity is the set of physical phenomena associated
Electricity Electricity is the set of physical phenomena associated

... In engineering or household applications, current is often described as being either direct current (DC) or alternating current (AC). These terms refer to how the current varies in time. Direct current, as produced by example from a battery and required by most electronic devices, is a unidirectiona ...
Temperature and Auxiliary Voltage Options
Temperature and Auxiliary Voltage Options

Power and Power Measurement - Charles W. Davidson College of
Power and Power Measurement - Charles W. Davidson College of

... Solar Cells in Parallel Two or more cells can be connected in parallel. • The combined output current (and current rating) is the sum of cell’s output currents • The combined output voltage is the same for each cell. • The combined power (and power rating) is the sum of the individual cell’s power ...
From Packard Bell Computer... HYCOMP 250
From Packard Bell Computer... HYCOMP 250

... Analog Mode Control is provided by a set of three double-throw relays. These three relays are controlled by a 3-bit register which is addressed and set in the same manner a s the DAC's. The three relays are completely under program control. Thus, relay contacts can be wired identically like the mast ...
lect 4
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... Remember: Ohm's Law ...
AN1208: LCD screens don`t flicker - or do they
AN1208: LCD screens don`t flicker - or do they

Voltage, Current, Resistance Lab
Voltage, Current, Resistance Lab

DC Slides
DC Slides

... resist the flow of current. It is found that for any conducting object, the current is proportional to the applied voltage. STATEMENT: DV=IR R is called the resistance of the object. An object that allows a current flow of one ampere when one volt is applied to it has a resistance of one OHM. ...
Lab 1a  - Department of Electrical and Computer Engineering
Lab 1a - Department of Electrical and Computer Engineering

... voltage”) and units in parentheses (such as “(V)”). Draw circles around the data points as you plot them and, when you are done, connect the data points with line segments and add a title to your plot. Note that the plot you have made is nonlinear. The LED current versus voltage is described by an e ...
Foundations of Motors and Generators
Foundations of Motors and Generators

Measurement of large pulses from reset time
Measurement of large pulses from reset time

... 1st stage output voltage swing The realized pulsed-reset technique does not act on the 1st stage and so can’t “protect” it against saturation The architecture of the 1st stage has been studied to provide a large output voltage swing ( 10 V) and so to a prevent a risk of an overflow condition Signa ...
IPSERIES sm.qxd
IPSERIES sm.qxd

... ratio respectively with an 8-ohm load. Frequency response, referenced to 1 kHz, shall be from 20 Hz to 20 kHz (+0 dB, - 0.5 dB) at any level up to the rated output. Hum and noise below rated output from 20Hz-20kHz shall be 103/105/107 (32dB gain) and 108/110/112 (26dB gain). Input sensitivity shall ...
Scrambler™ Instructions - General Guitar Gadgets
Scrambler™ Instructions - General Guitar Gadgets

... Note that all the capacitors, Except C1 are polarized and need to be installed with the correct polarity. The long lead of the capacitors go in the square holes. Our kit has 1N914 for the diodes and a 2N3904 for Q2. These are not the original component types. Some folks make a case that you need the ...
Transformer Rectifier Manual Table of Contents
Transformer Rectifier Manual Table of Contents

... installed in its place. Remove the shorting link after the resistor has been installed. Accessories: The following items may be provided with each transformer-rectifier power supply. Refer to the electrical schematic and parts identifier drawing. Surge suppressors: Surge suppressors are mounted in t ...
Ch13_PPT_Fund_Elec_Circ_5e
Ch13_PPT_Fund_Elec_Circ_5e

... • Each with self inductances L1 and L2. • Assume the second inductor carries no current. • The magnetic flux from coil 1 has two ...
ANNOUNCEMENT
ANNOUNCEMENT

DN256 - 1.4MHz Switching Regulator Draws Only 10µA Supply Current
DN256 - 1.4MHz Switching Regulator Draws Only 10µA Supply Current

... comparable to that of Burst Mode operation when the output load exceeds 50mA. The LTC3404 uses an internal phase-locked loop circuit to synchronize to an external signal. A voltage-controlled oscillator and a phase detector comprise the phaselocked loop. Filter components CLP and RLP smooth out the ...
SET2011, 10th International Conference on Sustainable Energy
SET2011, 10th International Conference on Sustainable Energy

... the production of electricity, in this context, Photovoltaic systems are the most resources used in the world wide (solar electric power systems has grown gradually from last (10-15) years) [1]. In photovoltaic field, the solar cell allows to obtaining the electricity directly by converting sunlight ...
ppt
ppt

301 LM301
301 LM301

Boolean Logic - Texas State University
Boolean Logic - Texas State University

... impossible to damage the equipment if used incorrectly. Electricity flows very easily through most metals, including jewelry. It would be wise when you are dealing with any circuitry to remove any jewelry from your hands (rings, watches, etc. ) or long necklaces that could contact the circuitry. Be ...
PSS30S71F6
PSS30S71F6

< 1 ... 2387 2388 2389 2390 2391 2392 2393 2394 2395 ... 2982 >

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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