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30 x resistor: 390 ohm - [The Perth Artifactory Wiki [ Shared ]]
30 x resistor: 390 ohm - [The Perth Artifactory Wiki [ Shared ]]

... (a “common cathode” display). Digits and some letters are displayed by supplying voltage to the appropriate anodes to make the correct shape. This is a common cathode, 4 digit display. In this case all the same segments on each digit are connected together, so that supplying the anode for the LED on ...
Transient Voltage Suppressors SA5V0(C)A
Transient Voltage Suppressors SA5V0(C)A

Bidirectional, High-Side, Current-Sense Amplifiers with Reference General Description Features
Bidirectional, High-Side, Current-Sense Amplifiers with Reference General Description Features

... The MAX4069–MAX4072 bidirectional, high-side, current-sense amplifiers are ideal for portable equipment. The wide 1.35V to 24V input common-mode voltage range is independent of the supply voltage, ensuring that the current-sense feedback remains accurate even when connected to a battery pack in deep ...
Chapter 2
Chapter 2

... a) For now use only the right (master) side. Make sure that no wires are connected to the 8 terminals at the bottom of the front panel. b) With the power supply off, ensure that there is a shunt (a flat metal bar) connecting the negative (21) and ground (19) terminals. With the voltage knob (6), you ...
BD3650FP-M
BD3650FP-M

... circuits and other conditions. Therefore, be sure to check all relevant factors, including transient characteristics. 3. GND potential The potential of the GND pin must be the minimum potential in the system in all operating conditions. Ensure that no pins are at a voltage below the GND at any time, ...
title: a novel variable speed wind energy using dc generator
title: a novel variable speed wind energy using dc generator

... We know the electrical power is generated by using wind energy to drive a wind turbine .due to their tremendous applications and advantages. For example low volume, low weight, and elimination of gearbox. In this paper , a new wind energy conversion system(WECSs) with DC generator, MPPT, and a new s ...
02_El_Meas_II_JAG_SN..
02_El_Meas_II_JAG_SN..

CODE SPECIFICATIONS Quantity DL 3155BRS MODULE WITH
CODE SPECIFICATIONS Quantity DL 3155BRS MODULE WITH

... progressive way.The modules constituting this didactical board are specifically aimed at representing, in a specific and reduced form, a wider and more complex system addressed mainly to the study of basic electronics. This trainer is composed of a development module that will contain 9 free slots o ...
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)

... Comparator is widely used in the process of converting analog signals to digital signals. Low power and high speed ADCs are the main building blocks in the front-end of a radio-frequency receiver in most of the modern telecommunication systems. As the comparator is one of the block which limits the ...
Charging Around the Circuit
Charging Around the Circuit

... very confusingly referred to as common, the term common can also be used to describe the paralleling of circuits, so if you see it be aware it’s an ambiguous term. I dislike the terms ground and earth; frame or chassis would surely have been much clearer. Historically some industrial applications us ...
Heater / Filament Supplies
Heater / Filament Supplies

... the valve heater will be at a positive voltage along half its length, and at an equal but opposite voltage along the other half, at any one time. The average stray current between filament and cathode is therefore reduced by a little more than half, and the frequency of the ripple voltage produced i ...
POCPA2012
POCPA2012

... Installation Insertion Devices: SCW and IVUs ...
Built-In Proactive Tuning System for Circuit Aging Resilience
Built-In Proactive Tuning System for Circuit Aging Resilience

... determine the critical paths in these circuits by using a static timing analyzer written in C. The gate libraries needed for the static timer are characterized in HSPICE for 90nm model card from BPTM [http://www-device.eecs.Berkeley.edu/~ptm/]. The flip-flops at the output of the critical paths are ...
Measure Pressure and Flow
Measure Pressure and Flow

... the motor and the inability to use on board speed or alarm sensors. However we cannot drive the motor directly from the EMANT300 Digital or PWM Output because the current needed to drive the motor is greater than the 20mA allowed by Digital or PWM Output Therefore we used the ULN2003 to drive the DC ...
Proposed Scheme
Proposed Scheme

... fed to the microcontroller. Inside the microcontroller, each phase load current is compared with the rated generator current i.e. 23A for 16KVA generator. This error current of each phase should flow through the ballast of respective phase to balance the generator terminal currents. In order to flow ...
Silicon Graphics - Crittenden Campus 16470-1
Silicon Graphics - Crittenden Campus 16470-1

... A. Where indicated on the drawings, each utility metering vertical section shall contain or provide provisions for current transformers, voltage transformers and any relays as specified by the local utility. The construction shall conform to the utility company’s metering standards as specified by t ...
Experiment 2
Experiment 2

... What are the new equations for TON and TOFF? What are the new on and off times for the pulses in your circuit? Modify the PSpice and the circuit on your protoboard and show that your results are consistent with those predicted by the equations. 05 November 2005 ...
Experiment 1 - Department of Electrical and Electronics Engineering
Experiment 1 - Department of Electrical and Electronics Engineering

... * As in the ammeter case, one has to set the switches on the meter properly, so that the meter acts as a voltmeter. * The voltmeters are always connected to the network in parallel, as its internal resistance is supposed to be infinite. * In alternating current (AC) circuits, the connection of the t ...
ME995-3K VARIABLE DOSERATE KILOGRAMS OF CEMENT
ME995-3K VARIABLE DOSERATE KILOGRAMS OF CEMENT

Valhalla Scientific, Inc
Valhalla Scientific, Inc

... DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the product. Return the product to Valhalla Scientific for service and repair to ensure that safety features are maintaine ...
STLC3075
STLC3075

Datasheet
Datasheet

... The SP207E-SP213E are enhanced transceivers intended for use in RS-232 and V.28 serial communication. These devices feature very low power consumption and single-supply operation making them ideal for space-constrained applications. Exar on-board charge pump circuitry generates fully compliant RS-23 ...
SERVICE MANUAL
SERVICE MANUAL

... Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment. Perfectly discharge the high potential of the picture tube before handling the tube. The picture tube is highly evacuated and if broken. Glass fragments w ...
9. Grid-Connected of Photovoltaic Systems
9. Grid-Connected of Photovoltaic Systems

... on different roofs connected on a single main bus. The influence of shading is less important than in configuration a, as shaded modules will only affect the chain they are installed on. Among other advantages, a breakdown of an inverter causes the complete halt of a chain (but not of the whole PV f ...
9370 Series Digital Oscilloscopes
9370 Series Digital Oscilloscopes

... resolution and accuracy are guaranteed by high sample rates. This is especially critical in digital design where unpredictable circuit ...
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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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