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USB 2.0 and USB 3.0 Circuit Protection
USB 2.0 and USB 3.0 Circuit Protection

MIKE-PLC-GUI Local Panel manual
MIKE-PLC-GUI Local Panel manual

... (motors) are set to OFF or STOP state. This avoids any movement or device going ON after an unexpected power cycle. Software limits were included for Slit and Focus movement ranges. This means that the mechanisms can move up to these limit positions, but cannot move outside the range. The values for ...
Airglow photometers on board sounding rockets
Airglow photometers on board sounding rockets

A 1 GS/s 6 bits Time-Based Analog-to
A 1 GS/s 6 bits Time-Based Analog-to

AE Series Important Tuning Information
AE Series Important Tuning Information

A Class-E Inductive Powering Link with Backward Data
A Class-E Inductive Powering Link with Backward Data

... of an external (primary) unit and an internal (secondary) unit. The external unit incorporates a high-efficiency switch-mode Class-E amplifier operating at ~200 kHz for driving the primary coil. The secondary unit consists of a parallel resonant coil followed by the power recovery circuitry. Means f ...
RC time constants
RC time constants

Pulse Transmission and Cable Properties
Pulse Transmission and Cable Properties

... Theory of the Transmission Line/Coaxial Cable In the laboratory you almost always transmit voltages and currents from one place to another using a cable. For our purposes, a cable is a pair of parallel conductors, each of constant cross-section, although not necessarily identical. The conductors ne ...
Chapter 3 Special-Purpose Diodes
Chapter 3 Special-Purpose Diodes

12-Bit DAC with EEPROM Memory in SOT-23-6
12-Bit DAC with EEPROM Memory in SOT-23-6

... factory and most of the gain error is contributed by the output op amp saturation near the code range beyond 4000. For the applications which need the gain error specification less than 1% maximum, the user may consider using the DAC code range between 100 and 4000 instead of using full code range ( ...
Near-Field Probe Set - ETS
Near-Field Probe Set - ETS

... most EUT operations are characterized in the time domain: 150 ns memory access time, 300 V/ms slew rate, and so on. This section presents a technique that will aid in linking emissions with the signals that create them. During testing you may receive information indicating, for example, that it fail ...
Athena III User Manual  Rev A.03:  May 2014
Athena III User Manual Rev A.03: May 2014

Power Topology - Buck Converter
Power Topology - Buck Converter

Average Current Mode Control of Switching Power Supplies
Average Current Mode Control of Switching Power Supplies

... inductor current control functions by comparing the upslope of inductor current (or switch current) to a current program level set by the outer loop-see Fig. 1. The comparator turns the power switch off when the instantaneous current reaches the desired level. The current ramp is usually quite small ...
Surge Arrester Application on Mv-Capacitor Banks to
Surge Arrester Application on Mv-Capacitor Banks to

... and that can initiate breaker restrikes which in turn generate even higher overvoltages. Consequently, any restrike implies additional stress for capacitor and circuit breaker, which reduces their lifetime or -in some extreme cases, if multiple restrikes occur- damages the capacitor and circuit brea ...
Aalborg Universitet
Aalborg Universitet

Number of cells/blocks
Number of cells/blocks

parameters which affect real and reactive power flow
parameters which affect real and reactive power flow

... 2. Adjust the sending-end voltage E1 to 300 V and keep it constant for the reminder part of the experiment. Use a three-phase resistive load and increase the load in steps making sure that the loads are balanced. Take readings of E1, Q1, P1, E2, Q2, and P2. Record your results in Table 1. 3. Switch ...
Liquid crystal display
Liquid crystal display

... less dependent on variations in the device thickness than that in the voltageoff state. Because of this, these devices are usually operated between crossed polarizers such that they appear bright with no voltage (the eye is much more sensitive to variations in the dark state than the bright state). ...
Template for e7 Presentations
Template for e7 Presentations

... damaged as a result. More subtle controller failures (changes in set points, high internal losses, etc.) are difficult to troubleshoot and may not be found at all. Deterioration of the battery is usually rapid and battery failure is what shows that the controller is not working correctly. A highly r ...
Estimation of Capacitance in CMOS Logic Gates - INESC-ID
Estimation of Capacitance in CMOS Logic Gates - INESC-ID

Series 7000 Analog Electronic Controls, Selection Guide - Enviro-Tec
Series 7000 Analog Electronic Controls, Selection Guide - Enviro-Tec

... further open. If temperature rises, the valve actuator is positioned in the closed direction. The degree of position change is dependent on the temperature difference from two degrees below setpoint. Proportional electric heat applications use an analog signal to control a voltage to a pulse width m ...
DRIVE SYSTEM ENT 271
DRIVE SYSTEM ENT 271

Synergetic Control of Power Converters for Pulse Current Charging
Synergetic Control of Power Converters for Pulse Current Charging

... been shown to have many advantages over the traditional constant current /constant voltage protocol. Pulse current charging, for example, can enhance the charging rate capability and prevent the increase of internal impedance of the battery, thus reducing the total charging time [5]. However, design ...
A 13.56 MHz RFID system based on organic transponers
A 13.56 MHz RFID system based on organic transponers

... sufficient noise margin, but they necessitate an additional, adand require more power than zerojustable power supply inverters. The generation of an additional low-impedance rail would add complexity to the RFID chip, and the higher power dissipation would negatively affect the reading distance of t ...
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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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