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BU508AF
BU508AF

... The BU508AF is manufactured using diffused collector in planar technology adopting new and ...
Light Dependent Resistor (LDR)
Light Dependent Resistor (LDR)

Part 2 5T op-amp - inst.eecs.berkeley.edu
Part 2 5T op-amp - inst.eecs.berkeley.edu

... LTspice files for most of the circuits in this lab are available online. Use them! In this lab, the goal is to build two very simple op-amps and use them, with feedback, to perform both the microphone amplification and the speaker driving from the previous lab. The circuit below shows an ideal opamp ...
Clamp-On Harmonic Meter Model 721
Clamp-On Harmonic Meter Model 721

... any oscilloscope or hand-held scope while measuring, or even use the output for loggers and recorders. The Model 721 is built of GE Lexan ®. In addition to its ruggedness and high design standards, it meets or exceeds UL® 1244 safety standards, as well as EN 61010-1, Category III for 600V ratings. T ...
MAX17409 Evaluation Kit Evaluates: General Description Features
MAX17409 Evaluation Kit Evaluates: General Description Features

... The MAX17409 evaluation kit (EV kit) demonstrates the high-power, dynamically adjustable, 1-phase application circuit for NVIDIA® graphics power supplies. This DC-DC converter is intended to either step down highvoltage batteries and/or the 5V system supply, generating a precision, low-voltage CPU c ...
A 4Gb/s/ch 356fJ/b 10mm equalized on-chip
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Tech Stds Higher Data Booklet.qxp
Tech Stds Higher Data Booklet.qxp

DN381 - Baseband Circuits for an RFID Receiver
DN381 - Baseband Circuits for an RFID Receiver

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Characteristics of power semiconductors

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... The AP3605 is a step-up DC/DC converter based on 1.5x charge pump current source, it is specially designed for LED supplies in backlight display. ...
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... form of electrical power that is delivered to homes and industry. • In the late 1800’s there was a battle between proponents of DC and AC. • AC won out due to its efficiency for long distance transmission. • AC is a sinusoidal current, meaning the current reverses at regular times and has alternatin ...
NIH PROJECT
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... According to the FDA the major cause of defibrillator failure was improper care of the rechargeable battery . The effective operation of a portable defibrillator depends critically on the condition of the battery which are defined by State-ofCharge and State-of-Health. ...
HT-7 progreesin 2001 HT
HT-7 progreesin 2001 HT

... ★ to limit the maximum instantaneous voltages imposed on the magnet (terminal to terminal, and terminal to ground); ★ to ensure successful discharge with a prescribed reliability for a given number of events over the design lifetime. ...
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HI-303/883 Datasheet

... All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes ...
EX: a) Draw a frequency-domain model of the above circuit. Label
EX: a) Draw a frequency-domain model of the above circuit. Label

FM Stereo Tuner by L Nelson-Jones - Keith
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... had been retuned. It is likely that with large departures from the recommended value there will be an increase in distortion, but no appreciable effect is likely to stem from the increase to 22pF, a value more readily available than 18pF. One possible reason for the apparent insensitivity to the val ...
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... This compact power supply unit is characterised by the variety of possibilities of application and low system costs. The fact that the external fuses are no longer necessary is an advantage as it saves cost and space. The switchable Fuse Mode, the fully specified 2-phase operation and the extremely ...
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Topic: F

... introduced by the authors with a constant current sink, monitored by a computing device. Results regarding the influence of frequency, results obtained with the above mentioned platform, are introduced in fig. 3. In the extended paper we present results regarding the influence of temperature and los ...
RV-722 Voltage Divider User and Service Manual
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Series and Parallel Circuits - Ms. Jefford`s Homework Page
Series and Parallel Circuits - Ms. Jefford`s Homework Page

reotron mew 700
reotron mew 700

... REOTRON MEW series, single-phase, microprocessor-based, thyristor-controllers are suitable for resistive or resistive/inductive loads, especially those with a high Rcold / Rwarm coefficient. Status relays indicate unit ready and fault conditions. Depending on settings, the controller normally operat ...
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MAX9159 Dual LVDS Line Receiver General Description Features
MAX9159 Dual LVDS Line Receiver General Description Features

... LVDS is intended for point-to-point communication over a controlled-impedance medium as defined by the ANSI TIA/EIA-644 and IEEE 1596.3 standards. LVDS uses a lower voltage swing than other common communication standards, achieving higher data rates with reduced power consumption, while reducing EMI ...
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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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