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Claudio`s slides (PDF download)
Claudio`s slides (PDF download)

... Determines System Behavior Normally, you may choose a LRG, a HRG or even a HHRG as a way to determine the system grounding. But, the system may have an unexpectable behavior. ...
FMMT625
FMMT625

... Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifically n ...
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S47-0079 - Exide Technologies

... locations exposed to high humidity, temperature extremes or dust. Moisture condensing on machine parts and electrical components can cause corrosion, which seriously affects operation, efficiency and life. All units are designed for floor mounting. Standard cases may be stack-mounted if required, up ...
TL07xx Low-Noise JFET-Input Operational Amplifiers 1 Features 3 Description
TL07xx Low-Noise JFET-Input Operational Amplifiers 1 Features 3 Description

Document
Document

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- Wiley Online Library

... 3.2. Averaged models for zero-order impedance Suppose there exists a loop that contains the input port and the output port during a subinterval of the switching period. From basic circuit theory, any voltage or current in a circuit can be written as a function of the input source(s) and the state va ...
Electrical Design for Roadside Devices
Electrical Design for Roadside Devices

Ricoh RS5C372A - on Natisbad.org!
Ricoh RS5C372A - on Natisbad.org!

... The RS5C372A can generate various periodic interrupt clock pulses lasting for long period (one month), and alarm interrupt can be made by days of the week, hours, and minutes by two incorporated systems. Since an oscillation circuit is driven at a constant voltage, it undergoes fluctuations of few v ...
Down-Conversion  Receiver  with  Continuous-Time EA  Modulation
Down-Conversion Receiver with Continuous-Time EA Modulation

... With large-scale monolithic integration of both circuits and optical devices less than a decade away, the field of optoelectrics is poised for a rapid and comprehensive transformation. Indeed, the numerous benefits that accompany full system integration (e.g., lower cost, area and power consumption, ...
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MAX2035 Ultrasound Variable-Gain Amplifier General Description Features

... is designed for high linearity, high dynamic range, and low-noise performance targeting ultrasound imaging and Doppler applications. Each amplifier features differential inputs and outputs and a total gain range of typically 50dB. In addition, the VGAs offer very low output-referred noise performanc ...
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AD7983 数据手册DataSheet下载
AD7983 数据手册DataSheet下载

... code transition. Positive full scale is defined as a level 1½ LSB beyond the last code transition. The deviation is measured from the middle of each code to the true straight line (see Figure 22). Differential Nonlinearity Error (DNL) In an ideal ADC, code transitions are 1 LSB apart. DNL is the max ...
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... control the unoccupied mode of operation. The time clock starts the unoccupied mode by de-energizing the W7100, shutting down the system blower, and driving the economizer closed. During the unoccupied period, if the building temperature falls below the setpoint of the night thermostat(s), both the ...
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chapter 06 Mixers
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... In this case, Vout1 is equal to VRF+ for one half of the LO cycle and equal to VRF- for the other half, i.e, R1 and R2 can be omitted because the outputs do not “float.” We observe that Vout1 Vout2 can be decomposed into two return-to-zero waveforms, each having a peak amplitude of 2V0. Since each o ...
R-390 and R-390A Receivers + - Triac Substitutes for the 3TF7
R-390 and R-390A Receivers + - Triac Substitutes for the 3TF7

... mod, the 5 watt (40 ohm) resistor recommended by Megeff ran hot. It was replaced by three 15 ohm 10 watt resistors in series. This suggests that a higher wattage dropping resistor may be desirable in the mod below. If the zener diode mod is simpler, then why consider this mod? As far as I know, no o ...
HMC689LP4 数据资料DataSheet下载
HMC689LP4 数据资料DataSheet下载

... Short to ground with zero ohms close to the IC. ...
NRS 2-50 NRS 2-51 - André Ramseyer AG
NRS 2-50 NRS 2-51 - André Ramseyer AG

... The equipment is supplied with 24 V DC and fused with an external semi-delay fuse 0.5 A. Please use a safety power supply unit with safe electrical isolation. The power supply unit must be electrically isolated from dangerous contact voltages and must meet at least the requirements on double or rein ...
Class 2000 Installation Manual - E-Mon
Class 2000 Installation Manual - E-Mon

Application Note DrBlade™ 2 Selection of Boot Capacitor Value
Application Note DrBlade™ 2 Selection of Boot Capacitor Value

INTRODUCTION - Therm-O-Disc
INTRODUCTION - Therm-O-Disc

... When the fault conditions have been set up, note the temperature of the TTTS when the maximum desired temperature limit is reached. At this point the circuit is manually interrupted. This test should be run several times, in several different units. In some applications, it will not be possible to “ ...
62-0389—05 - Class 2000 Meter - E-Mon
62-0389—05 - Class 2000 Meter - E-Mon

... MAINS input wiring. The switch mechanism must be installed in close proximity to the meter and easily reachable for the operator. This device must also be marked as the disconnecting device for the Class 2000 meter. b. Install 1/10 Amp Slow Activation in line fuses with the suitable voltage rating f ...
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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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