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Page 1 6483 0939 Tannoy United Kingdom T: +44 (0) 1236 420199
Page 1 6483 0939 Tannoy United Kingdom T: +44 (0) 1236 420199

Enpirion EN5364QI 6A and EN5394QI 9A DCDC Converter
Enpirion EN5364QI 6A and EN5394QI 9A DCDC Converter

Extending the input voltage range of the
Extending the input voltage range of the

Self Switching Power Supply
Self Switching Power Supply

DS90LV001 800 Mbps LVDS Buffer DS90LV001 800 Mbps LVDS Buffer General Description
DS90LV001 800 Mbps LVDS Buffer DS90LV001 800 Mbps LVDS Buffer General Description

... 800 Mbps LVDS Buffer General Description The DS90LV001 LVDS-LVDS Buffer takes an LVDS input signal and provides an LVDS output signal. In many large systems, signals are distributed across backplanes, and one of the limiting factors for system speed is the "stub length" or the distance between the t ...
Characterization of CMOS Fully Differential Amplifiers for
Characterization of CMOS Fully Differential Amplifiers for

Transimpedance amplifier (140MHz)
Transimpedance amplifier (140MHz)

... output stage clipping occurs at typically 240µA. The SA5212A is a bipolar transimpedance amplifier which is current driven at the input and generates a differential voltage signal at the outputs. The forward transfer function is therefore a ratio of the differential output voltage to a given input c ...
Single-chip detector for electron spin resonance spectroscopy
Single-chip detector for electron spin resonance spectroscopy

... 共PLL兲 circuitry for frequency-to-voltage conversion. The signal at the output of the PLL is demodulated by a lock-in amplifier. The lock-in internal reference signal is amplified and delivered to the field modulation coil. The spin sensitivity of the realized microsystem is evaluated by measuring th ...
Catalogue Sheet
Catalogue Sheet

BFP405F
BFP405F

... Emitter-base cutoff current VEB = 0.5 V, IC = 0 DC current gain ...
Creating a Bipolar Input Range for the DDC112
Creating a Bipolar Input Range for the DDC112

... Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is cur ...
Instructions on handling and operation of image intensifiers
Instructions on handling and operation of image intensifiers

Simulation of Bridgeless Boost Rectifier for Low Voltage Energy
Simulation of Bridgeless Boost Rectifier for Low Voltage Energy

Carvin Biasing The Vintage Series
Carvin Biasing The Vintage Series

... First we want to measure the line voltage coming into the amp. With the red test lead probe touch it to the wire shown in the photo below and record the reading on the bias calculation worksheet. This is the line voltage, or the supply voltage coming into the amp. It will be in the range of 115 to ...
11 - KUET
11 - KUET

... The function of the patient return electrode is to remove current from the patient safely. A return electrode burn occurs when the heat produced, over time, is not safely dissipated by the size or conductivity of the patient return ...
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ADT490 TroubleShooting Shorts 2 Shorts With a Ohmmeter Two

... Fault is on the EOL side of the Test Point If short on panel side, voltage remains 0V Using resistance measuring may give additional info ...
Managing Power Quality Issues
Managing Power Quality Issues

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AP65403 Description Pin Assignments

... When the HS MOSFET is on, inductor current starts to increase. The current sense amplifier senses and amplifies the inductor current. Since the current mode control is subject to sub-harmonic oscillations that peak at half the switching frequency, ramp slope compensation is utilized. This will help ...
Induced Polarisation (IP)
Induced Polarisation (IP)

... • After current is switched off (or turned on), the voltage between potential electrodes takes 1s -1 min to decay (or build up) The ground acts somewhat like a capacitor. ...
Li, W., and D.J. Perreault, “FITMOS Modeling and On-resistance AC Characteristic Evaluation,” 2010 IEEE Energy Conversion Congress and Exposition , pp. 378-385, Sept. 2010.
Li, W., and D.J. Perreault, “FITMOS Modeling and On-resistance AC Characteristic Evaluation,” 2010 IEEE Energy Conversion Congress and Exposition , pp. 378-385, Sept. 2010.

... a time period after the device is turned on. As the drainsource current Ids that is carried is increased to a certain level (e.g., by adjusting load resistance or input voltage at constant duty ratio), the drain-source voltage of FITMOS does not drop quickly to the normal low level (Rds-on*Ids) that ...
Motorcycle Brake Light Flasher
Motorcycle Brake Light Flasher

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Application Report Long Drive/Motor Leads

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Technical Reference - Ericson Manufacturing Company

The_Pulse_of_the_Silent_Thriller
The_Pulse_of_the_Silent_Thriller

... voltages and subtracting from them the two scaled reference magnet voltages, we just subtract one of the half-circuit voltages from the other. An overheating splice on one side will make its voltage larger than that on the other side. This is the equivalent of the symmetric quench detection system w ...
电路笔记 CN-0089  利用
电路笔记 CN-0089 利用

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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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