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SN65LVDM051-Q1 数据资料 dataSheet 下载
SN65LVDM051-Q1 数据资料 dataSheet 下载

... The SN65LVDM050, and SN65LVDM051 are differential line drivers and receivers that use low-voltage differential signaling (LVDS) to achieve signaling rates as high as 500 Mbps (per TIA/EIA-644 definition). These circuits are similar to TIA/EIA-644 standard compliant devices (SN65LVDS) counterparts, e ...
Voltage Stability Improvement using Static Var Compensator in
Voltage Stability Improvement using Static Var Compensator in

Modelling, analysis and verification of a resonant
Modelling, analysis and verification of a resonant

... voltages – both AC and DC are accepted; stability over wide voltage range; omission of overvoltages – common to electromagnetic systems; reduced power consumption. Keywords—electromagnetic contactor, half bridge resonant LLC converter, power supply ...
PT2399 - The Valve Wizard
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Evaluates:  MAX5069A MAX5069A Evaluation Kit General Description Features
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... DC-DC converter that provides +12V at up to 10A output. The circuit can be powered from a 36V to 72V DC source. The user should supply an additional 330µF bulk storage capacitor between the input terminals (+VIN, -VIN). This capacitor should be rated for 100V and be able to carry approximately 2A of ...
SR Relay Operation
SR Relay Operation

... SR Relay – Operation and Selection Many positioning applications, such as conveyors and vertical lifts, require a minimal and accurate stopping distance. Therefore, the time lapse between the moment that the motor power ceases and the moment that the brake engages must be minimal. One SEW solution r ...
Abstract-This paper presents the analyzed, design and
Abstract-This paper presents the analyzed, design and

... for low-wattage HID lamps because the overall lighting system is expected to be of small size. However, the operation of high-pressure HID lamps with high-frequency current ...
ECE1250F14_Lab3_NodeV
ECE1250F14_Lab3_NodeV

... 1. Design: The R-2R ladder D/A circuit is shown above in Fig. 1. The value of R cancels out in this circuit. That is, vD/A does not depend on the value of R. In practice, however, we want a value of R that will result in currents around 100 A. Much smaller currents than 100 A result in circuit noise ...
CS244- Introduction to embedded systems and ubiquitous computing
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... Convert a command to a physical stimulus (e.g., heat, light, sound, pressure, magnetism, or other mechanical motion) May require analog interface ...
MAX5080 Evaluation Kit Evaluates:  MAX5080–MAX5083 General Description Features
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... The MAX5080 evaluation kit (EV kit) is a fully assembled and tested circuit board that evaluates the MAX5080 PWM/PFM step-down converter IC with an integrated high-side switch. The MAX5080 EV kit operates over a wide 4.5V to 40V input voltage range and provides up to 1A at the 3.3V output. The MAX50 ...
Conductors and Insulators
Conductors and Insulators

... and when cold without its normal load current.  For example, a typical 100-W incandescent light bulb has a hot resistance of 144 Ω, but when the bulb is not lit, an ohmmeter reading of the cold bulb’s filament will read only about 10 Ω. ...
Twilight Switch
Twilight Switch

aaaf3529lseezgkqbks
aaaf3529lseezgkqbks

SBS 1.1-COMPLIANT GAS GAUGE AND
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... impedance, open-circuit voltage, and other critical parameters of the battery pack as well and reports the information to the system host controller over a serial-communication bus. Together with the integrated analog front-end (AFE) short-circuit and overload protection the bq20z75 maximizes functi ...
nodal analysis
nodal analysis

... Nodal Analysis 3. Apply Kirchhoff’s current law at each node except the reference. Assume that all unknown currents leave the node for each application of Kirchhoff’s current law. In other words, for each node, don’t be influenced by the direction that an unknown current for another node may have h ...
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... • Op amps can be configured in many different ways using resistors and other components. • Amplifiers provide gains in voltage or current. • Op amps can convert current to voltage. • Op amps can provide a buffer between two circuits. • Op amps can be used to implement integrators and ...
Power Quality Improvement in PMBLDCM Drive
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... Fig.6 shows the current ( ) waveform at input AC mains is in phase with the supply voltage ( ) representing nearly unity power factor. The waveforms of trapezoidal back EMF of PMBLDCM drive are shown in Figure-8.Performance of the proposed PMBLDCM drive is evaluated under varying input AC voltage to ...
Analog Communication Lab(PEC-453)
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...  Writing of all parameters into a non-volatile memory so the setting values are retained even in the event of auxiliary power failure  Fault value storage for the last eight power system faults (fault in the network), with real-time assignment  Event store for storing the last 200 operational and ...
drift_diffusion_hw
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... (d) For each doping level in (a) vary temperature (T) from 200 K to 500K. (e) For each doping level in (b) vary temperature (T) from 200K to 500K. (f) Plot μn vs T and μp vs T at different doping levels. Why does mobility increase with decreasing temperature? ...
Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable OPA890 FEATURES
Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable OPA890 FEATURES

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6-W, 3.3-V/5-V INPUT, WIDE ADJUST OUTPUT, POSITIVE-TO-NEGATIVE CONVERTER PTN04050A FEATURES APPLICATIONS
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... The module will operate down to no load with reduced specifications. The maximum output current is 1 A or the maximum output power is 6 W, whichever is less. The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a tole ...
A Voltage-Lift Switched Inductor DC/DC Multilevel Boost Converter
A Voltage-Lift Switched Inductor DC/DC Multilevel Boost Converter

< 1 ... 1105 1106 1107 1108 1109 1110 1111 1112 1113 ... 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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