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c - dee @ poliba
c - dee @ poliba

Slides
Slides

... Mike Holenderski, [email protected] ...
Passive Infrared Sensor - Python with Raspberry Pi
Passive Infrared Sensor - Python with Raspberry Pi

IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

... The first reported CMOS power amplifier operated in the 900MHz ISM band delivering output power from 20μW to 20 mW using a 3V supply, and was implemented in 1μm technology. The measured drain efficiency of the power amplifier with the de-feed inductors of the output stage implemented on chip is 25%, ...
Log-Domain Circuit Models of Chemical Reactions
Log-Domain Circuit Models of Chemical Reactions

... state variable becomes independent of its mean value and equal to CφT /(ακq). We have designed a feedback loop that modifies this behavior by dynamically adjusting the SNR of each state variable based on its mean value. In this way we can ensure that electronics and chemistry have similar noise prop ...
IR9201 - ACTiSYS
IR9201 - ACTiSYS

MAX6457–MAX6460 High-Voltage, Low-Current Voltage Monitors in SOT Packages General Description
MAX6457–MAX6460 High-Voltage, Low-Current Voltage Monitors in SOT Packages General Description

... The MAX6457–MAX6460 high supply voltage, low-power voltage monitors operate over a 4V to 28V supply voltage range. Each device includes a precision bandgap reference, one or two low-offset voltage comparators, internal threshold hysteresis, power-good or reset timeout options, and one or two high-vo ...
RF3854 LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER
RF3854 LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER

... The RF3854 is a low noise, multi-mode, quad-band direct I/Q to RF modulator and PA driver solution designed for digital modulation applications ranging from 800MHz to 2000MHz. Frequency doublers, dividers and LO buffers are included to support a variety of LO generation options. Dynamic power contro ...
S-Parameters and Related Quantities
S-Parameters and Related Quantities

... terminal 2 causing a reflection at terminal 2 and a transmission out of terminal 1, which lets us define two more coefficients S22 and S12. But we will focus for the moment on the effects of a signal incident on terminal 1. Technically, the signals A, B and C are calculated in a strange way to deriv ...
StudSensor™ L50
StudSensor™ L50

Acquiring Knowledge in Learning Concepts from Electrical Circuits
Acquiring Knowledge in Learning Concepts from Electrical Circuits

... facilitate the acquisition of the concepts of current and voltage. For example, in the "hydraulic model", where the pressure of the liquid is analogous to the voltage and the debit to the current, the student doesn't necessarily have the relative adequate knowledge of the concepts of pressure and de ...
23_Electricity
23_Electricity

... If there is more than one resistor, then you can use the concept of equivalent resistance. We will look at two common arrangements. When the equivalent resistance is determined, the single resistance (RE) replaces the entire arrangement. ...
MM74HC4046 CMOS Phase Lock Loop
MM74HC4046 CMOS Phase Lock Loop

... the capacitor once the capacitor charges up to the threshold of the schmitt trigger the oscillator logic flips the capacitor over and causes the mirror to charge the opposite side of the capacitor. The output from the internal logic is then taken to pin 4. The input to the VCO is a very high impedan ...
MAX9476 - Part Number Search
MAX9476 - Part Number Search

... synthesizer can be used to generate the clocks for systems using T1, E1, T3, E3, and xDSL. The MAX9476 features a phase-lock loop (PLL) that uses a voltage-controlled crystal oscillator (VCXO). The internal PLL phase locks the external crystal (35.328MHz) to the 8kHz input reference clock. In additi ...
TLV2322, TLV2322Y, TLV2324, TLV2324Y LinCMOS LOW-VOLTAGE LOW-POWER OPERATIONAL AMPLIFIERS
TLV2322, TLV2322Y, TLV2324, TLV2324Y LinCMOS LOW-VOLTAGE LOW-POWER OPERATIONAL AMPLIFIERS

... Low-voltage and low-power operation has been made possible by using the Texas Instruments silicon-gate LinCMOS technology. The LinCMOS process also features extremely high input impedance and ultra-low bias currents making these amplifiers ideal for interfacing to high-impedance sources such as sens ...
1335260226.
1335260226.

... iii. Find the cost of running three such heaters for four hours a day for a week given that the cost of electric energy is 45/= per unit. d) A coil of resistance wire is immersed in a liquid in a calorimeter of total heat capacity 950 JK-1. If the temperature rises from 9oC to 39oC in 5 minutes when ...
transformer regulated brushless generator
transformer regulated brushless generator

Performance of Electronic Dispersion Compensation for Multi-Level
Performance of Electronic Dispersion Compensation for Multi-Level

A Novel Measurement System for the Common-Mode
A Novel Measurement System for the Common-Mode

... Different techniques for separating measurement of the CM and DM signals have been reported. A noise separation network [10] was first introduced in 1988, in which a pair of center tapped radio transformers with the ratio of 1 to 1 working as a core to select different mode noises through a mechanic sw ...
Thevenin/Norton (Source transformation)
Thevenin/Norton (Source transformation)

... Thevenin and Norton Cookbook: Why? There are many kinds of complicated sources in electrical engineering, and we basically want to know how they ‘drive’ a load. We can either calculate or measure the voltages and currents at the nodes where the load will be connected, and we then know how the loaded ...
Determination of the output characteristics of electron tube generators
Determination of the output characteristics of electron tube generators

Class notes on capacitors
Class notes on capacitors

Lesson 4 Circuit Structure
Lesson 4 Circuit Structure

... structure of electric circuits and the names given to various member that make up the structure. We define an electric circuit as a connection of electrical devices that form one or more closed paths. Electrical devices can include, but are not limited to, ...
Arc Detection: Increased Quality Control, Safety
Arc Detection: Increased Quality Control, Safety

An experimental apparatus measuring convective heat transfer
An experimental apparatus measuring convective heat transfer

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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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