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Green Book TOC - Teledyne Relays
Green Book TOC - Teledyne Relays

... DESCRIPTION These state-of-the-art solid-state power controllers (SSPCs) are designed for use in power controller applications. These SSPCs utilize the latest technology to provide low On-resistance output with complete short circuit and overload current protection. In addition, status output lines ...
XR-2206 - TU Berlin
XR-2206 - TU Berlin

... respectively, as shown in Figure 13. Depending on the polarity of the logic signal at Pin 9, either one or the other of these timing resistors is activated. If Pin 9 is open-circuited or connected to a bias voltage  2V, only R1 is activated. Similarly, if the voltage level at Pin 9 is 1V, only R2 ...
CONTROL OF AC LOADS FROM AN AC SUPPLY
CONTROL OF AC LOADS FROM AN AC SUPPLY

... of 50 Hz, however with an inverter running at 2 kHz it is vital that inverter grade thyristors are used in order to reduce switching losses, i.e. increase the efficiency of the power conversion stage. The turn off process itself is concerned with obtaining a current, which is able to pass in the rev ...
EE3305 Design Project final draft
EE3305 Design Project final draft

R5011ANJ
R5011ANJ

... The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ...
dimming - Philips
dimming - Philips

Schmitt trigger package
Schmitt trigger package

Senior project - Clark Haynie Walters
Senior project - Clark Haynie Walters

Operating the Pulsed Laser Diode SPL LL90_3
Operating the Pulsed Laser Diode SPL LL90_3

... SPL LL90_3 together with the MOSFET driver IC. Both MOSFET driver ICs mentioned above have the same pinning. The MOSFET inside the hybrid package is the Infineon BSP318S [3]. To operate the SPL LL90_3 two DC voltages are needed namely the supply voltage Vs (e.g. 15V) for the MOSFET driver IC and the ...
MAX8667/MAX8668 1.5MHz Dual Step-Down DC-DC Converters with Dual LDOs and Individual Enables
MAX8667/MAX8668 1.5MHz Dual Step-Down DC-DC Converters with Dual LDOs and Individual Enables

... minimizing output voltage ripple. The DC-DC converters (OUT1, OUT2) also feature an optimized on-resistance internal MOSFET switch and synchronous rectifier to maximize efficiency. The MAX8667/ MAX8668 utilize a proprietary hysteretic-PWM control scheme that switches with nearly fixed frequency at u ...
Using Transmission Line Pulse Measurements to Understand
Using Transmission Line Pulse Measurements to Understand

... melting and the device is permanently damaged. The TLP data from this forward biased TVS device provides rich data for predicting its protective abilities. At currents below 10 A the voltage drop across the device can be easily predicted with a simple linear model. Above 10 A for a 100 ns pulse the ...
P85324 E50 MULTICANDELA SPEAKER SPEAKERSTROBE
P85324 E50 MULTICANDELA SPEAKER SPEAKERSTROBE

... If the peak current exceeds the power supplies’ peak capacity, the output voltage provided by the power supplies may drop below the listed voltage range of the appliances connected to the supply and the voltage may not recover in some types of power supplies. For example, an auxiliary power supply t ...
this PDF file - European Scientific Journal
this PDF file - European Scientific Journal

FB1201B Digital Input Connection Assembly
FB1201B Digital Input Connection Assembly

XUPS-600-1000
XUPS-600-1000

... • Over/under-voltage protection • Rack or wall mountable with optional rack/wall-mount kit • Heavy-duty surge protection and noise filtering • Automatic voltage regulation with wide voltage input window enhances long battery life • Comprehensive array of status bargraphs for voltage, load and batter ...
BDTIC  www.BDTIC.com/infineon TLE4966K
BDTIC www.BDTIC.com/infineon TLE4966K

Lecture13: LC & LCR Circuits, EM Oscillations
Lecture13: LC & LCR Circuits, EM Oscillations

... (no resistance) compare with w’ for an under-damped circuit whose resistance cannot be ignored? A. The resonant frequency for the non-ideal, damped circuit is higher than for the ideal one (w’ > w0). B. The resonant frequency for the damped circuit is lower than for the ideal one (w’ < w0). C. The r ...
1
1

Producing Potato Power
Producing Potato Power

... Questions: 1. What combination of materials produced the highest voltage? Answers will vary depending on distance between terminals, connection with the leads, and depth that the nails and wire are inserted. In general, the zinc plated nail and copper wire should produce the highest voltage. 2. Chem ...
4-20mA Current Transmitters with Sensor Excitation and Linearization
4-20mA Current Transmitters with Sensor Excitation and Linearization

... The XTR112 and XTR114 are monolithic 4-20mA, two-wire current transmitters. They provide complete current excitation for high impedance platinum RTD temperature sensors and bridges, instrumentation amplifier, and current output circuitry on a single integrated circuit. The XTR112 has two 250µA curre ...
File
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... In England, at the time, cathode rays were considered to be particles but German scientists favoured some kind of ray. One way of detecting cathode rays is to make use of their property of causing fluorescence. In 1895 Roentgen was working with a cathode ray tube when he noticed an unexpected glow a ...
ET33879883
ET33879883

EE Treasure Hunter
EE Treasure Hunter

... This metal detector project is the result of considerable Such devices are almost ideal to work with especially as they thought and development. It is sensitive and easy to use and, are very forgiving, easily withstanding short overloads. most importantly, it can be assembled and tested without The ...
Passively Equalized RIAA Phono Preamp using Sonic Imagery Labs
Passively Equalized RIAA Phono Preamp using Sonic Imagery Labs

... should preferably have a voltage noise density of 5 nV/√Hz or less, and a current noise density of 1 pA/√Hz or less. The former requirement is best met by using low-noise bipolar-input amplifiers, such as the Sonic Imagery Labs 990Enh-Ticha, 992Enh-Ticha or the 994Enh-DUAL. Though the bipolar device ...
Thomas Vox Replacements
Thomas Vox Replacements

... The small signal bipolars can mostly be replaced with any modern NPN silicon low noise device. Modern replacements should be low-noise NPN with hfe between 200-400. The 86-5044-2 is the most common device used in these amps. It's an ECB pinout, like the 2N3391, many BCxxx series and Japanese 2SCxxxx ...
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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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