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Introduction - The City University of New York
Introduction - The City University of New York

... Distance range: 10cm (4") ~ 80cm (30"). Moderately reliable for distance measurement Immune to ambient light Impervious to color and reflectivity of object Applications: distance measurement, wall following, … ...
Comdyna Model GP-6 Analog Computer, Serial Number 794
Comdyna Model GP-6 Analog Computer, Serial Number 794

... 3. If your ODEs are patched onto the patch panel, you now may enter the coefficient potentiometer (“pot”, a variable resistor) values. Position the MODE SELECTOR rotary switch to POT SET, and depress the IC mode control push button. a. Position the Y/POT ADDRESS rotary switch to the number of the po ...
OP290 数据手册DataSheet 下载
OP290 数据手册DataSheet 下载

... The OP290 uses a PNP input stage with protection resistors in series with the inverting and noninverting inputs. The high breakdown of the PNP transistors coupled with the protection resistors provide a large amount of input protection, allowing the inputs to be taken 20 V beyond either supply witho ...
L4947 L4947R 5V-0.5A VERY LOW DROP REGULATOR WITH RESET
L4947 L4947R 5V-0.5A VERY LOW DROP REGULATOR WITH RESET

... put instantaneously goes down (LOW status) inhibiting the microprocessor. The typical power onoff hysteresis is 50mV. The three gain stages (operational amplifier, driver and power PNP) require the external capacitor (Comin = 20µF) to guarantee the global stability of the system. Load dump and field ...
Electricity
Electricity

... Suppose you want to build a circuit with a source, a switch , a motor and a bulb. You want the bulb to indicate when the motor stops working. Draw the circuit. ...
Your first driver - Laser Pointer Forums
Your first driver - Laser Pointer Forums

DN-63 The Current-Doubler Rectifier: An Alternative Rectification
DN-63 The Current-Doubler Rectifier: An Alternative Rectification

Three-channel white-LED driver uses simple step
Three-channel white-LED driver uses simple step

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Metering all your needs

... > Protection against fraudulent token attacks Delayed reconnection > In rush current protection of utility assets > Protects appliances from surge due to load shedding ...
edexcel hnc/d
edexcel hnc/d

... remove unwanted parts of the signal. For example a signal may contain AC and DC signals. A simple capacitor would filter out the DC signal. The signal may contain AC signals of different frequencies. A more sophisticated filter would remove unwanted frequencies. MULTIPLEX SYSTEMS. A modern industria ...
الشريحة 1
الشريحة 1

DL-4plus - NovAtel
DL-4plus - NovAtel

... The DL-4 plus also provides support for an external inertial measurement unit (IMU). With NovAtel’s SPAN™ Technology, the addition of inertial capabilities results in continuous positioning even during short outages or reduced satellite coverage. The system is also ideal for high-dynamic application ...
Total intensity and quasi-elastic light
Total intensity and quasi-elastic light

100V Micropower Voltage Monitor
100V Micropower Voltage Monitor

... Configure High Voltage Designs for 1.4% Accuracy The LTC®2965 (single) and LTC2966 (dual) high voltage monitors feature a wide operating range, low power consumption and configurable input/outputs. Each device includes resistor-programmable threshold inputs to facilitate simple undervoltage, overvol ...
Getting the Full Potential from Your ADC (Rev. B)
Getting the Full Potential from Your ADC (Rev. B)

... Many of today’s high-resolution ADCs (Analog-to-Digital Converters) are operating from a single supply and utilize fully differential inputs. This can be a problem for single ended signals that are bipolar relative to common. This article will illustrate circuit configurations that will preserve the ...
What is Light?
What is Light?

... spectral, spatial, or temporal distributions of optical energy. As you can see in figure 2.1, short wavelength ultraviolet light has much more energy per photon than either visible or long wavelength infrared. ...
How to use a Digital Multimeter
How to use a Digital Multimeter

... •Be very careful to not touch any other electronic components within the equipment and do not touch the tips to each other while connected to anything else •To measure voltage connect the leads in parallel between the two points where the measurement is to be made. The multimeter provides a parallel ...
Science 9 – Electrical Principles
Science 9 – Electrical Principles

... Copper wire) Insulators hold charges stopping their flow. (eg. plastic) Semi conductors allow some charges to flow but put up a bit of resistance. (eg. Silicon or Tungsten) Superconductors offer no resistance. They can only be made at extremely low temperatures and are usually made of metal alloys o ...
EUP2584A White LED Step-Up Converter In Tiny SOT-23 Package
EUP2584A White LED Step-Up Converter In Tiny SOT-23 Package

... specifically designed to drive white LEDs. The Step-up converter topology allows series connection of the white LEDs so the LED currents are identical for uniform brightness. The EUP2584A switches at 1.1MHz, allowing the use of tiny external components. The input and output capacitor can be as small ...
• - Lattice - University of Florida
• - Lattice - University of Florida

... 8. Make sure the diffractometer goniometer, detector, housing etc is insulated from the high voltage leads. 9. Make sure all High Voltage wires are insulated and secured (not loose) up to the sample. 10. Turn on the High Voltage Enable Switch on the power supply. 11. Turn off the high voltage after ...
(1)Ceramic capacitor
(1)Ceramic capacitor

Physics 2102 Spring 2002 Lecture 8
Physics 2102 Spring 2002 Lecture 8

... RC Circuits: Charging a Capacitor In these circuits, current will change for a while, and then stay constant. We want to solve for current as a function of time i(t)=dq/dt. The charge on the capacitor will also be a function of time: q(t). The voltage across the resistor and the capacitor also chan ...
Document
Document

... Electromagnetic induction is the main underlying principle in the working of the dc to ac inverters. The Transistors Q1,Q2 and the Transformer T1 determine the power output of the inverter. The bigger the Transformer and more powerful the Transistors the more power output is obtained. The invert ...
Alternating Current (AC)
Alternating Current (AC)

... Step-down and Step-up Transformers  Step-Down:  A transformer designed to have a high input voltage and a low output voltage  There will be fewer loops in the secondary coil  Step-up:  A transformer designed to have a low input voltage and a higher output voltage  More loops in secondary coil ...
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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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