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C/V
C/V

Introduction Peak Current Surge/Inrush Measurement
Introduction Peak Current Surge/Inrush Measurement

... provision are generally referred to as ‘soft-start” or ‘inrush limit’ circuits. Peak current surge current measurements can be accomplished using the UPC Test Manager software to create and execute specific start phase angle transients in combination with the built in metering capability of any of t ...
View/Open - Library@Atmiya
View/Open - Library@Atmiya

... system performed as desired with a 10cm. diameter antenna attached to the transponder. The base station is built by using the popular 8051 family micro controller. It gets the tag ID and if the tag is stored in its memory then the microcontroller will allow the person inside. RFID reader module, are ...
SF/SR Series Thumbwheel Switches
SF/SR Series Thumbwheel Switches

... maximum reliability and long life. These dividers use a cascade arrangement of resistors to accurately divide voltages. The accuracy and the resolution is not solely dependent on the accuracy of the resistors used, but mainly in the number of decades used. For example: a 100 volt signal can be divid ...
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(only for stand-alone systems

A 3-V, 6-Bit C-2C Digital-to-Analog Converter Using Complementary
A 3-V, 6-Bit C-2C Digital-to-Analog Converter Using Complementary

... the output of the C-2C DAC, shown in Fig. 7. The calibration circuit consists of three thermometer-coded elements, each represented by a 4.7-pF capacitor that is approximately 1/64th of the C-2C unit capacitor. Although the calibration is implemented off-chip with discrete CMOS switch arrays and dis ...
SECTION 413-00 Instrument Cluster and Panel Illumination
SECTION 413-00 Instrument Cluster and Panel Illumination

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Summary

... The power and ground planes of a PCB have some amount of inductance associated with them. The geometry of these planes determines their inductance. Since power and ground planes are by definition a planar structure, current does not just flow through them in one direction. It tends to spread out as ...
Radiation-Hard/High-Speed Parallel Optical Links K.K. Gan , P. Buchholz
Radiation-Hard/High-Speed Parallel Optical Links K.K. Gan , P. Buchholz

PHYSICS 212
PHYSICS 212

... We cool a ring of superconductor in a small magnetic field that corresponds to one flux quantum threading the ring. We now have a superconducting ring threaded by a single flux quantum. Suppose we now turn off the applied field. According to Faraday's Law of Induction, the moment that we change the ...
SN74LV374AT 数据资料 dataSheet 下载
SN74LV374AT 数据资料 dataSheet 下载

... obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the speci ...
1.2 This standard does not apply to
1.2 This standard does not apply to

... of controls on all appliances shall be indicated by figures, letters or other visual means. This requirement also applies to switches which are part of a control. If figures are used for indicating the different positions, the off position shall be indicated by the figure 0 and the position for a hi ...
Operating Instructions
Operating Instructions

... The UPQ-1P loudspeaker’s extended low-frequency headroom gives it a smooth sound over a wide operating frequency range of 55 Hz to 18 kHz. With its easy-to-use and versatile QuickFly® rigging, the UPQ-1P loudspeaker is equally suited to touring, rental, and fixed installation applications. High powe ...
CoolRunner-II CPLD Family Data Sheet
CoolRunner-II CPLD Family Data Sheet

... The patented DataGATE technology to permits a straightforward approach to additional power reduction. Each I/O pin has a series switch that can block the arrival of free running signals that are not of interest. Signals that serve no use might increase power consumption, and can be disabled. Users a ...
FCX558 Features Mechanical Data
FCX558 Features Mechanical Data

... Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any c ...
Archived: 5B Series User Manual
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PSPICE (Orcad Family Release 9.2 Lite Edition)
PSPICE (Orcad Family Release 9.2 Lite Edition)

... 10. No PSPICE assignment is complete until you place a text box on the schematic, which identifies your name, date, assignment number, file name etc. Move the pointer over to the right tool palette and click on the Place Text icon. Enter the required text inside the “Place Text” window. Click OK. Mo ...
Single 3-Input Positive-NOR Gate (Rev. E)
Single 3-Input Positive-NOR Gate (Rev. E)

thin film photovoltaic module model type
thin film photovoltaic module model type

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AD8352 - Analog Devices

... Changes to Figure 38 ...................................................................... 17 Changes to Ordering Guide .......................................................... 19 9/06—Rev. 0 to Rev. A Changes to Absolute Maximum Ratings ....................................... 6 Inserted Figure 1 ...
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RISC Processor Architecture
RISC Processor Architecture

... zero bias current Real life is not so pretty Except with current-feedback op amps (which have asymmetric input structures and should not be used as comparators) it is reasonable to assume that C and Ib are small and R is large But designs must consider the effects of the actual values And of any non ...
Inductance - CED Engineering
Inductance - CED Engineering

... Another way of increasing the inductance is to wind the coil in layers. Figure 2-9 shows three cores with different amounts of layering. The coil in figure 2-9(A) is a poor inductor compared to the others in the figure because its turns are widely spaced and there is no layering. The flux movement, ...
700 Series 20V BIPOLAR ARRAY DESIGN MANUAL
700 Series 20V BIPOLAR ARRAY DESIGN MANUAL

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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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