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HALF AND FULL WAVE RECTIFIERS
HALF AND FULL WAVE RECTIFIERS

Current A 60-W light bulb operating on a 120
Current A 60-W light bulb operating on a 120

Series Circuits
Series Circuits

Pattern Recognition Using IR
Pattern Recognition Using IR

... Photodiode is a type of photo-detector capable of converting light into either current or voltage, depending upon mode of operation. Photodiode used has a lamp size of 5mm and has a wavelength of peak sensitivity of 850nm. It has maximum reverse of 50V and dark current of 1nA.It has a sensitivity of ...
thpma046
thpma046

Description: waveform and time duration
Description: waveform and time duration

... the die surface is lower than that one between electromagnetic (RF) incident field and PCB tracks connected to the input ports of an IC. In such a noisy environment, there are two types of failures induced by conducted RF interference on ICs [1]: a) Static failures: occur in the presence of conducte ...
Given that electron concentration n= 2.15×10 /         intrinsic carrier
Given that electron concentration n= 2.15×10 / intrinsic carrier

Knight_ch31
Knight_ch31

ANNOUNCEMENT
ANNOUNCEMENT

A new type electromagnet controller for isotope ratio mass
A new type electromagnet controller for isotope ratio mass

... magnet is that the magnetic field can be continuously controlled, including its switch off and reversal of its polarity, by varying of the coil current. The reversal of the magnetic polarity is important when both positive and negative ions spectra have to be investigated as it is the case of positi ...
maj megger - Test Equipment Rental
maj megger - Test Equipment Rental

... including the IEE Wiring Regulations and the German Regulations VDE 0100. To achieve this, an instrument’s performance on the resistance ranges fully conforms to VDE 0413 parts 1 and 4. The range of insulation test voltages available allows one instrument to be used for a variety of applications. Fo ...
AN-941
AN-941

... The second factor that influences the gate-source voltage is the so called "Miller" effect. During the period t1 to t2, some voltage is dropped across circuit inductance in series with the drain, and the drain-source voltage starts to fall. The decreasing drain-source voltage is reflected across the ...
Chapter 2 - Basic Op-Amp Circuits
Chapter 2 - Basic Op-Amp Circuits

... Describe and analyze the operation of several types of comparator circuits. ...
PNP Bipolar Transistor for High-Current Switching Applications
PNP Bipolar Transistor for High-Current Switching Applications

... Collector-to-Emitter Voltage, VCE -- V ITR09567 ...
Download PGR-5330 Datasheet
Download PGR-5330 Datasheet

... The SE-330 combines the measured values of resistance, current, and voltage to continuously determine that the NGR is intact. It is able to detect a resistor failure with or without a ground fault present. Sensing resistors are matched to the system voltage and are used to monitor NGRs on systems up ...
Solution Set #1 - inst.eecs.berkeley.edu
Solution Set #1 - inst.eecs.berkeley.edu

... If we define our current through the resistor as I1 then I1 = (VA – VB) / R If we define our current through the resistor as I2 then I2 = (VB – VA) / R Direction matters! Just remember: when taking the differences in voltage, the first voltage you choose corresponds to the beginning of the arrow, an ...
Circuit Theory
Circuit Theory

... V is the intercept of the tangent to characteristic at (10V,10mA) is the voltage change , when zo the current decreases by 10mA, hence V =10-10(0.05)=9.5V zo A zener diode exhibits a constant voltage of 5.6V for currents greater than five times the knee current I is specified to be 1mA. It is to be ...
Datasheet - Mouser Electronics
Datasheet - Mouser Electronics

Electricity Notes
Electricity Notes

... alternating current (AC). The electron flow in AC is the same as in DC with an exception – the current flow periodically changes direction. In this United States, alternating current changes polarity at the rate of sixty cycles per second (60 Hz). This means that the electricity changes polarity (di ...
HIGH VOLTAGE IGNITION COIL DRIVER POWER IC
HIGH VOLTAGE IGNITION COIL DRIVER POWER IC

... I diag(leak) VF ...
powertector - Critical Communications World
powertector - Critical Communications World

Visual CW Tuning Indicator
Visual CW Tuning Indicator

Lecture 3
Lecture 3

3B17 数据手册DataSheet 下载
3B17 数据手册DataSheet 下载

... subsystems. The 3B Series Subsystem consists of a 10” relay rack with universal mounting backplane and a family of plug-in (up to 16 per rack) input and output signal conditioning modules. Eight and four channel backplanes are also available. Each backplane incorporates screw terminals for sensor in ...
< 1 ... 1890 1891 1892 1893 1894 1895 1896 1897 1898 ... 2207 >

Resistive opto-isolator



Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.
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