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Section J7: FET Amplifier Design
Section J7: FET Amplifier Design

MAX3311E/MAX3313E ±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceivers in µMAX General Description
MAX3311E/MAX3313E ±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceivers in µMAX General Description

... nominal value. The capacitor’s equivalent series resistance (ESR) usually rises at low temperatures and influences the amount of ripple on V-. To reduce the output impedance at V-, use larger capacitors (up to 10µF). Bypass VCC to ground with at least 0.1µF. In applications sensitive to power-supply ...
MTL MA15 Surge Protectors Manual PDF
MTL MA15 Surge Protectors Manual PDF

... MAINTENANCE The lifetime of the MA15 is dependent on the number of surges experienced; however, the unit will typically provide maintenance-free protection over a twenty year period. In the event of a surge exceeding the device ratings, the unit is designed to fail-safe, due to the secondary protect ...
Recitations with Matt Leone
Recitations with Matt Leone

... many different driving frequencies. Use the same circuit set up as in the previous part of the lab. As you increase the driving frequency, the amplitude of the resistor voltage will increase because the total circuit R impedance is decreasing, i.e. Vresistor   Z Vsource (work through this logic!) ...
comparison of electric springs with statcom for flc based
comparison of electric springs with statcom for flc based

Voltage Sensing Module 10 (VSM10)
Voltage Sensing Module 10 (VSM10)

... Risk of fire and damage to equipment due to short-circuit/ground fault The cable to terminal -X522 must be installed in such a way that a ground fault or short circuit can be ruled out. A ground fault can result in fire with the associated smoke.  Protect the cables from mechanical damage.  Comply ...
Minimization of Charge Sharing ~ Problems in Dynamic BiCMOS
Minimization of Charge Sharing ~ Problems in Dynamic BiCMOS

... Imitating the CMOS solution to the charge sharing problems a clock driven predischarge PMOS device MP5 has been added between the node Vp and Gnd in 1.5V BiCMOS dynamic logic circuit as shown in Figure 2. Charge sharing problems were occurring when 'A' was changing from 0-> 1 and 'B' was making a tr ...
Data Sheet
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... of the Hall effect sensor, the circuit will drive the output voltage higher. In contrary, a north magnetic pole will drive the output voltage lower. The variations of voltage level up or down are symmetrical. Because the SOT-23-3 is reversed packaging with TO-92S-3, so the magnetic performance is al ...
Low-Cost Programmable Battery Dischargers and Application in
Low-Cost Programmable Battery Dischargers and Application in

... resistance of the MOSFET in that way that V1 is equal to V2. Therefore, the control voltage V1 also is equal to the current in the circuit due to the used resistor of one ohm (Fig.1). In other words, a control voltage of 0-5V will generate equivalent currents of 0-5A (see [14] for more details). As ...
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... Parallel Parallel switching of 10 switching of 10 kvar capacitors kvar capacitor with reactors Inrush Current Inrush Current 1153 A 595 A ...
Phototriac dV/dt Application Note
Phototriac dV/dt Application Note

... require design control schemes that can contend with these high slew rate conditions. Figures 8 and 9 (as well as figures 11 and 12) show the maximum dV/dt and di/dt location on the voltage curve across TRIAC and AC current through TRIAC. A perfect example of inductive load is a TRIAC application wh ...
BD71L4LG-1
BD71L4LG-1

... In the construction of this IC, P-N junctions are inevitably formed creating parasitic diodes or transistors. The operation of these parasitic elements can result in mutual interference among circuits, operational faults, or physical damage. Therefore, conditions which cause these parasitic elements ...
the use of protective earth as a distributor of fields and radiation
the use of protective earth as a distributor of fields and radiation

Radiation Detection Instrumentation Fundamentals
Radiation Detection Instrumentation Fundamentals

LABORATORY WORK BOOK For The Course EL
LABORATORY WORK BOOK For The Course EL

Research Needs for Circuit Design
Research Needs for Circuit Design

... January 31, 2001 Rev 2 ...
SUPPORT BOOKLET FOR UNIT 1
SUPPORT BOOKLET FOR UNIT 1

... devices are electromagnetic and so the output switching device (transistor or MOSFET) needs to be protected, using a diode, from the large voltage produced when the device is switched off. Relays, themselves, are also considered as important output switching devices because of the way in which they ...
SA-S90-24MCC - P84503
SA-S90-24MCC - P84503

... same protected area. This control unit does not generate a temporal pattern signal. If the distinctive three-pulse temporal pattern Fire Alarm Evacuation (or total evacuation) in accordance with NFPA 72, is required, the control unit must be used with appliances that can generate the temporal patter ...
Design and Application of Full Digital Control System for LLC
Design and Application of Full Digital Control System for LLC

... efficiency and low EMI (Electromagnetic Interference) noise. Despite of that, their utilization in most of industry and consumer applications is still limited due to their disadvantages. The perspective topology for such application is LLC resonant converter (Fig. 1), which exists for very long time ...
ITSI.wkshp - The Concord Consortium
ITSI.wkshp - The Concord Consortium

... Do not use your fingers to remove chips—many have ended up with the chip embedded in their fingers. Pry the chips loose from underneath using the Phillips screwdriver. ...
UCC3974 数据资料 dataSheet 下载
UCC3974 数据资料 dataSheet 下载

... the MODE pin must be brought below the LFD_ENABLE threshold and then brought above it with the LFDSYNC pin held in the desired state. To use DIM as an analog input, the LFDSYNC pin must be low when mode crosses the LFD_ENABLE threshold. In this mode, DIM becomes an analog input that varies the amoun ...
smart5000tel3u
smart5000tel3u

... 16 minutes half-load runtime (with a continuous load 2500VA; much longer runtime available at smaller loads) Line-interactive voltage regulation corrects severe brownouts and overvoltages without using battery power High voltage output supports 208V server, internetworking and telecom applications P ...
review for elec 105 midterm exam #1 (fall 2001)
review for elec 105 midterm exam #1 (fall 2001)

... and C together is near zero - currents can be extremely high in parallel resonant circuits (“circulating” currents), even though total flowing into/out of L and C combination is near zero Thévenin and Norton equivalent circuits - use same rules for finding open-ckt voltage and short-ckt current as w ...
Radiation Detection Instrumentation Fundamentals
Radiation Detection Instrumentation Fundamentals

AD9754 数据手册DataSheet 下载
AD9754 数据手册DataSheet 下载

... The on-chip reference and control amplifier are configured for maximum accuracy and flexibility. The AD9754 can be driven by the on-chip reference or by a variety of external reference voltages. The internal control amplifier, which provides a wide (>10:1) adjustment span, allows the AD9754 full-sca ...
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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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