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ISSCC 2012 / SESSION 22 / IMAGE SENSORS / 22.4 -Based 22.4
ISSCC 2012 / SESSION 22 / IMAGE SENSORS / 22.4 -Based 22.4

LTC4401-1/LTC4401-2 - RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range.
LTC4401-1/LTC4401-2 - RF Power Controllers with 250kHz Loop BW and 45dB Dynamic Range.

... voltage appears at the RF pin, at which time the loop closes and the output power follows the DAC profile. The RF power amplifier will require a certain control voltage level (threshold) before an RF output signal is produced. The LTC4401-X VPCA/B output(s) must quickly rise to this threshold voltag ...
STEVAL-ILL044V1
STEVAL-ILL044V1

... HVLED815PF. It solves the problem of low-cost drive circuitry for LED replacements for 40 W incandescent or equivalent compact-fluorescent lamps. The HVLED815PF is a new integrated power controller using primary-side control to achieve LED current regulation within +/-5%. (It also has primary-side v ...
New Simple Square-Rooting Circuits Based on Translinear Current Conveyors Chuachai Netbut Montree Kumngern
New Simple Square-Rooting Circuits Based on Translinear Current Conveyors Chuachai Netbut Montree Kumngern

... current-controlled resistor. In figure 7, it evaluates that the low value of RC should be selected in order to obtain the incorporate of equation (4). The value of RC is 100Ω reasonable to use for expanding the input voltage range in this simulation. In the results, it demonstrates that, at RC = 100 ...
DC Measurements Y1 Physics Lab 2016/17 V R A + - I V R A +
DC Measurements Y1 Physics Lab 2016/17 V R A + - I V R A +

... The I-V characteristic in figure 13 shows some random errors because the maximum voltage across the copper wire is only ~0.2 mV (since the myDAQ analogue output delivers a maximum current of 2 mA). To improve the accuracy of the measurements, the myDAQ takes the average of 10,000 measurements (know ...
AN-912 Common Data Transmission Parameters and their Definitions
AN-912 Common Data Transmission Parameters and their Definitions

... IIL—Low-Level Input Current. The current into (out of) an input when a low-level voltage is applied to that input. Note that current out of a device pin is given as a negative value. II—Maximum Input Current. The current into (out of) an input when the maximum specified input voltage is applied to t ...
Product Data SheetRev C – 05/2012
Product Data SheetRev C – 05/2012

... The TriQuint TGC4403-SM packaged MMIC combines a frequency doubler with a 3-stage amplifier, operating at input frequencies of 8 - 15 GHz. With greater than 30 dBc isolation between the input and doubled frequency, the TGC4403-SM achieves 20 dBm output power, with 2 dBm input power. This performance ...
Output Waveform Evaluation of Basic Pass Transistor Structure*
Output Waveform Evaluation of Basic Pass Transistor Structure*

... employ the XOR and MUX operation [1] and as a result very compact and fast full adder implementations have been proposed [2], [3], [4]. Although pass transistor logic is attractive for low-power high-performance circuit design it is rarely the logic style of choice for actual designs. The main reaso ...
Lecture 21: Polarisation of light and other waves
Lecture 21: Polarisation of light and other waves

... to the surface E|| and a component perpendicular to that, E⊥ . In general the perpendicular component is reflected less and refracted more. In particular there is one angle - Brewster’s angle - at which there is no reflected E⊥ . This occurs when the reflected and refracted rays are at 90◦ to each o ...
FJA4210 PNP Epitaxial Silicon Transistor F JA
FJA4210 PNP Epitaxial Silicon Transistor F JA

... (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. ...
A Brief History of Planetary Science
A Brief History of Planetary Science

... The arctan of a negative number is negative so: ...
AMC1200-Q1 Fully-Differential Isolation Amplifier
AMC1200-Q1 Fully-Differential Isolation Amplifier

Design of Low-Voltage, Low-Power FGMOS Based Voltage Buffer
Design of Low-Voltage, Low-Power FGMOS Based Voltage Buffer

here
here

... can control the speed • The rectifier changes 50/60 Hz AC voltage to DC • The inverter changes DC to AC of a selected frequency • Most common type of converter is the voltage source, pulse width modulated (PWM) converter ...
MC33897, Single Wire CAN Transceiver
MC33897, Single Wire CAN Transceiver

... This circuit generates a 500 kHz signal to be used for internal logic. It is the reference for some of the required delays. ...
B37EA - EPS School Projects - Heriot
B37EA - EPS School Projects - Heriot

... Energy, power, charge, voltage, current and resistance. Calculation of voltage multipliers and current shunts to extend meter operating range. Conductors moving in a magnetic field, force exerted and e.m.f. induced. Introduction to feedback control systems. Illustration of the various roles of engin ...
Photon Energy
Photon Energy

... • that is waiting at rest at a traffic light. After the collision, the cars lock together and slide. • Eventually, the combined cars are brought to rest by a force of kinetic friction as the • rubber tires slide across the dry, level, asphalt road ...
Lab9 - Sonoma State University
Lab9 - Sonoma State University

Unpacking Outcomes
Unpacking Outcomes

... Even when we use scientific instruments safely and carefully, there can still be sources or error. Acknowledging these sources is part of good science. Displaying data is an important step in drawing conclusions and recognizing patterns Ohm’s Law allows us to calculate unknown quantities in electric ...
General Description Features
General Description Features

... dimming driver designed to drive an external p-channel in series with the LED string provides wide-range dimming control. This feature provides extremely fast PWM current switching to the LEDs with no transient overvoltage or undervoltage conditions. In addition to PWM dimming, the ICs provide analo ...
MODEL 648
MODEL 648

... The system has been designed to connect directly to the door operator or lift controller (Fig 3). When the infra-red beams are obstructed, a system trigger occurs and switches a transistor output. This is used by the door/lift controller to re-open the doors. ...
LT6010 - 135µA, 14nV/rtHz, Rail-to-Rail Output Precision Op Amp with Shutdown
LT6010 - 135µA, 14nV/rtHz, Rail-to-Rail Output Precision Op Amp with Shutdown

... resistances in each input lead; instead, keep the resistance at either input as low as possible for maximum accuracy. Leakage currents on the PC board can be higher than the LT6010’s input bias current. For example, 10GΩ of leakage between a 15V supply lead and an input lead will generate 1.5nA! Sur ...
D1000 Arc-fault Protection System • Improve personnel safety
D1000 Arc-fault Protection System • Improve personnel safety

... An arc protection system operates much faster than conventional protection relays and thus damages caused by an arc flash fault can be kept at a minimum level. As a general guideline, an arc will not cause any damage if it is eliminated within 35ms. If the arc is allowed to continue and last 100ms s ...
Where are silicon detectors used? - PPD
Where are silicon detectors used? - PPD

Photon Energy
Photon Energy

< 1 ... 1985 1986 1987 1988 1989 1990 1991 1992 1993 ... 2982 >

Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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