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GIGABIT ABIT
GIGABIT ABIT

... supports ‘Class of Service’ in accordance with IEEE 802.1p that allows time critical traffic to jump ahead to the front of the queue thus minimizing latency and reducing jitter to allow such demanding applications to operate correctly. ROS allows priority classification by port, tags, MAC address, a ...
Programmable and Tunable Circuits for Flexible RF Front Ends Naveed Ahsan
Programmable and Tunable Circuits for Flexible RF Front Ends Naveed Ahsan

... challenging. However, with recent advances in many areas of technology these demands can now be met. Two concepts have been investigated in this thesis. The initial part presents the feasibility of a flexible and programmable circuit (PROMFA) that can be utilized for multifunctional systems operatin ...
SAM - OCR AS Level Physics A: Breadth in physics – Component
SAM - OCR AS Level Physics A: Breadth in physics – Component

Matching High-Speed Amplifiers and Data Converters
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ISL54004 - Intersil
ISL54004 - Intersil

MAX3080E–MAX3089E ±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers General Description
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... The MAX3080E–MAX3089E are ±15kV electrostatic discharge (ESD)-protected, high-speed transceivers for RS485/RS-422 communication that contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shor ...
Planar silicon SPADs with 200-μm diameter and 35-ps
Planar silicon SPADs with 200-μm diameter and 35-ps

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Simulation and Implementation of Interleaved Boost DC

CP2101 - Sparkfun
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... temperature devices with an output voltage linearlyproportional to the Centigrade temperature. The LM35 device has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scali ...
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ATPL250A - Atmel Corporation

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Introduction to Short Circuit Current Calculations

... For electrical systems where any or more of the above conditions exist, it is advisable to perform a single line-to-ground fault simulation. Line-to-line or double line-to-ground fault studies may also be required for protective device coordination requirements. Also, since only one phase of the lin ...
File - ELECTRICAL ENGINEERING DEPT, DCE
File - ELECTRICAL ENGINEERING DEPT, DCE

... known as open circuit characteristics of the DC generator. The induced emf when the field current is zero is known as residual voltage. This emf is due to the presence of a small amount of flux detained. In the field poles of the generator called residual flux. Once the OCC is obtained parameters su ...
Datasheet
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... The reason for this is because each of the LTM8020, LTM8021, LTM8022 and LTM8023 μModules are rated for 36VDC operation. According to IPC 2221, Generic Standard on Printed Board Design, Table 6-1, uncoated external printed circuit board conductors, such as solder pads, with 31 to 50V between them mu ...
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... Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any c ...
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ZXMS6005DT8 Product Summary Features and Benefits

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... and two others were monolithically integrated directly above, with all of the devices sharing a common middle electrode (Figs. 2(a)–2(c)). The major steps involved in the fabrication were the patterning of the Ta/Pt bottom electrode using e-beam evaporation and lift-off, patterning of the bottom dev ...
POWER METER PW3336/PW3337
POWER METER PW3336/PW3337

... The power meters can measure voltage, current, and power harmonics up to the 50th order depending on the fundamental f re qu e n cy, in clu ding tot a l ha r m o nic dis to r t i o n ( T H D), fundamental wave component, harmonic level, phase difference, content percentage, and other parameters for ...
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PTCSGM3 PTC Thermistors, Lug Sensors for Over

Understanding Power Impedance Supply for Optimum
Understanding Power Impedance Supply for Optimum

... Capacitors are like all other electronic parts. They have parasitic components that cause them to deviate from their ideal characteristics. In power supply design, the most important parasitics are the capacitors’ Equivalent Series Resistance (ESR) and Equivalent Series Inductance (ESL). Even these ...
BD135/ 137/ 139 NPN Epitaxial Silicon Transistor
BD135/ 137/ 139 NPN Epitaxial Silicon Transistor

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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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