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doc - Talking Electronics
doc - Talking Electronics

microphones
microphones

... (or micron) is one millionth of a meter or one thousandth of a millimeter. Close to this plate (metallic or metalised plastic) stands another metallic plate with holes. These 2 plates act as electrodes and are kept at opposite polarities by supplying D C to behave as a condenser, they should be insu ...
ADM709 数据手册DataSheet 下载
ADM709 数据手册DataSheet 下载

... operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods of time may affect device reliability. ...
M. Wu, X.Z. Bo, J.C. Sturm, S. Wagner, "Complementary metal-oxide-semiconductor thin-film transistor circuits from a high-temperature polycrystalline silicon process on steel foil substrates," IEEE Trans. Elec. Dev. TED-49, pp. 1993-2000 (2002).
M. Wu, X.Z. Bo, J.C. Sturm, S. Wagner, "Complementary metal-oxide-semiconductor thin-film transistor circuits from a high-temperature polycrystalline silicon process on steel foil substrates," IEEE Trans. Elec. Dev. TED-49, pp. 1993-2000 (2002).

UM10589 SSL2129AT 12 W 230 V flyback mains dimmable LED
UM10589 SSL2129AT 12 W 230 V flyback mains dimmable LED

The Transistor Amplifier
The Transistor Amplifier

... and delivered to a speaker. A single transistor will perform both "detection" and amplification. In Fig 71bd, the first transistor provides these two functions and the output is passed to the second transistor via direct-coupling. The first two transistors provide enormous gain and a very high input ...
1 Chapter.2 DESIGN OF DC MACHINES Details to be specified
1 Chapter.2 DESIGN OF DC MACHINES Details to be specified

... v = π DN / 60 m / s , centrifugal force and its effects increases. Therefore the machine must be mechanically made robust to withstand the effect of centrifugal force. This increases the cost of the machine. In general for normal construction, peripheral velocity should not be greater than 30 m/s as ...
Datasheet - Mouser Electronics
Datasheet - Mouser Electronics

... 2. Voltage rating shown is the rated DC continuous working voltage or the sine-wave RMS absolute maximum voltage at commercial line frequency. For DC applications the absolute maximum permissible voltage is 1.5 times the value shown for low repetition short-time-overload or pulse conditions of 10 se ...
care and feeding of power grid tubes - F1FRV
care and feeding of power grid tubes - F1FRV

... without driving the tube into the positive grid region. The difference between a tube with a µ of 5 and one with a µ of 160 can be seen by comparing Figure 1 to Figure 2. Observe how much more anode current at a given anode voltage can be obtained from the 3CX3000A1 (Figure 1) without driving the gr ...
66xxA Series Operating Guide
66xxA Series Operating Guide

STM6522
STM6522

... reset push-button closures do not cause system resets as the extended Smart Reset™ delay setup periods are implemented. Once the valid Smart Reset™ input levels and setup delay are met, the device generates an output reset pulse for a fixed timeout period (tREC). The typical application hookup shows ...
I-420-EM-B - IOTA Engineering
I-420-EM-B - IOTA Engineering

Slide 1
Slide 1

... DC (No DC path is provided by capacitor). PSpice always requires a DC path to ground for its calculation. ...
Long sensing range 2.5 m 8.202 ft
Long sensing range 2.5 m 8.202 ft

... change in angle, wrinkles on the object surface, etc. • If a specular body is present in the background, faulty operation may be caused due to a small change in the angle of the background body. In that case, install the sensor at an inclination and confirm the operation with the actual sensing obje ...
A Study of Successive Approximation Registers and Implementation of an Ultra-
A Study of Successive Approximation Registers and Implementation of an Ultra-

... 3) Current and voltage reference generator and battery power management 4) At the output of the pacemaker, high voltage pulse generator and multiplier exist. ...
LOW-NOISE AND LOW-POWER INTERFACE CIRCUITS
LOW-NOISE AND LOW-POWER INTERFACE CIRCUITS

Unified Power Quality Conditioner for Grid Integration
Unified Power Quality Conditioner for Grid Integration

User Manuals - Fieldpiece Instruments
User Manuals - Fieldpiece Instruments

BT520  Users Manual Battery Analyzer
BT520 Users Manual Battery Analyzer

Document
Document

BCX6825 Features Mechanical Data
BCX6825 Features Mechanical Data

... 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 ...
Microfluidic Fiber Lasers
Microfluidic Fiber Lasers

... demonstrated and complex devices, integrating insulators, conductors and amorphous semiconductors, are now designed with a large number of functionalities [1-3]. However, the elaboration of metal-insulator-semiconductor fiber structures is basically confined to amorphous semiconductors, exhibiting i ...
Timers
Timers

SP310A 数据资料DataSheet下载
SP310A 数据资料DataSheet下载

... modem on the data terminal ready (DTR) pin signifying that the computer is ready to accept the transmit data. ...
I-Tech HD Series
I-Tech HD Series

< 1 ... 99 100 101 102 103 104 105 106 107 ... 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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