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301 LM301
301 LM301

LXM1623-12-6x
LXM1623-12-6x

AlexanderCh04finalR1
AlexanderCh04finalR1

vi characteristics of scr
vi characteristics of scr

... drop in the four layers and is very small (in the region of 1 V). In the on state the anode current is limited by an external impedance or resistance as shown in figure (2-a) ...
FST3126MX Datasheet - Mouser Electronics
FST3126MX Datasheet - Mouser Electronics

RLC Circuits Note
RLC Circuits Note

... Calculate and measure the ratio of input and output voltages at resonance. You should find that the output voltage is greater than the input! Explain how a passive circuit like this can give a voltage gain. Measure the ratio of input and output voltages for very low frequency ~1% of the value at re ...
VC——97 - AideTek
VC——97 - AideTek

Theory and Designs for Building a White LED Headlamp
Theory and Designs for Building a White LED Headlamp

US5U2
US5U2

... otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. ...
SGA3463Z 数据资料DataSheet下载
SGA3463Z 数据资料DataSheet下载

... infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time with ...
Northern Highlands
Northern Highlands

Low-Noise, Regulated, Negative Charge-Pump Power Supplies for GaAsFET Bias _______________General Description ____________________________Features
Low-Noise, Regulated, Negative Charge-Pump Power Supplies for GaAsFET Bias _______________General Description ____________________________Features

... maintain a low dropout voltage (VIN - |VOUT|). The overall dropout voltage is a function of the charge pump’s output resistance and the voltage drop across the linear regulator (N-channel pass transistor). At the 100kHz switching frequency, the charge-pump output resistance is a function of C1 and C ...
Physical Science
Physical Science

Tutorial 10
Tutorial 10

... The sign is correct because “High Voltage” is the cause or the reason for current flow. It is potentially lethal if you come into contact with it as it may cause huge current to pass through you. And it is the current that delivers the damage. The voltage required varies a lot because most of it is ...
Network Theorems
Network Theorems

... Norton's Theorem states that it is possible to simplify any linear circuit, no matter how complex, to an equivalent circuit with just a single current source and parallel resistance connected to a load. Norton form: A parallel combination of Norton equivalent current source I0 and Norton equivalent ...
LED-55W-PR1T5 - Thomas Research Products
LED-55W-PR1T5 - Thomas Research Products

... 0-10V Dimming Notes: Part comes with two dimming input connectors +Purple/-Gray on the output side. Part is compatible with most 0-10V Wall Slide dimmers and direct 0-10V analog signal. Output current will be 0% when Vdim ≤0.60V. This is dim to zero operation. Output will be 100% with Purple/Gray op ...
Article - University of Warwick
Article - University of Warwick

... seen as well as a constant noise-floor. The maximum power in that constant noise corresponds to 2.3 mV noise and should be present at all frequencies. The smooth roll-off towards higher frequencies is a consequence of the Lock-in amplifier filter setting. An artifact frequency at 1/12 Hz is visible ...
1 - TI E2E Community
1 - TI E2E Community

Pre-lab Exercise
Pre-lab Exercise

... input resistance to the circuit the potentiometer is connected to must have a very large input resistance). One effective way of ensuring that no current is drawn from the wiper is to use an op-amp as a buffer (see the first opamp in the circuit of Figure 1). As you may recall, one of the properties ...
Experiment 09
Experiment 09

Power supply CP-D 12/2.1
Power supply CP-D 12/2.1

WE 286A - Western Electric
WE 286A - Western Electric

... adapted to amplifier or modulator applications where the sensitivity is controlled by varying the grid bias. As the control grid is made more negative, the transconductance and plate current approach zero gradually rather than sharply, so that distortion is relatively small at all values of grid bia ...
Crompton Instruments Integra Ci3 Digital Metering System
Crompton Instruments Integra Ci3 Digital Metering System

... Integral terminal cover: Complies with: Humidity: Secondary terminals screw clamp: ‘Fast On’: ...
MJD112
MJD112

... Figure 10. Base-emitter on voltage (NPN) ...
ComboLight New Construction Recessed w/Trim - 12V AR111 - 1 Light
ComboLight New Construction Recessed w/Trim - 12V AR111 - 1 Light

... suitable for downlighting and accent applications. Utilizes ONE (1) 12V AR111 lamp. ...
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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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