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OKY T/3, T/5-W5 Series
OKY T/3, T/5-W5 Series

K-475DV Instructions Manual
K-475DV Instructions Manual

... TWO FIELD TERMINAL ALTERNATORS: ALTERNATORS WITH TWO FIELD TERMINALS ACCESS TO BOTH ENDS OF THE ROTOR WINDING. IT IS NEITHER AN "A" OR "B" CIRCUIT UNTIL ONE TERMINAL IS EITHER CONNECTED TO NEGATIVE OR POSITIVE BY MEANS OF A JUMPER OR STRAP, ETC. IF ONE OF THE FIELD TERMINALS IS CONNECTED TO NEGATIVE ...
AR2111 Radio-on-a-Chip for 2.4 GHz Wireless LAN
AR2111 Radio-on-a-Chip for 2.4 GHz Wireless LAN

... for the synthesizer. See “Bias/Control (BIAS) Block” on page 5 for more details. An on-chip ...
HFBR-2412TCZ - Avago Technologies
HFBR-2412TCZ - Avago Technologies

... The curves in Figures 3, 4, and 5 are constructed assuming no inline splice or any additional system loss. Should the link consists of any in-line splices, these curves can still be used to calculate link limits provided they are shifted by the additional system loss expressed in dB. For example, Fi ...
EEE- Interview Question with Answers
EEE- Interview Question with Answers

... Answer:It is used with generators for charging a number of capacitor in parallel and discharging them in series.It is used when voltage required for testing is higher than the available. ...
datasheet - Texas Instruments
datasheet - Texas Instruments

... The power supply can be any voltage between the minimum and maximum supply voltage rating located in Recommended Operating Conditions. Each VCC pin should have a good bypass capacitor to prevent power disturbance. For devices with a single supply, a 0.1-μF capacitor is recommended; if there are mult ...
User’s Manual DPharp Differential Pressure and
User’s Manual DPharp Differential Pressure and

Conversion of voltmeter to ammeter and vice-versa
Conversion of voltmeter to ammeter and vice-versa

def convertToNumber(data)
def convertToNumber(data)

THS7002 数据资料 dataSheet 下载
THS7002 数据资料 dataSheet 下载

... 1.7-nV/√Hz voltage noise with a 100-MHz (−3 dB) bandwidth. The output pin of the preamp is accessible so that filters can be easily added to the amplifier. The 3-bit digitally-controlled PGA provides a −22-dB to 20-dB attenuation/gain range with a 6-dB step resolution. In addition, the PGA provides ...
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AP Instruments Model 200 0.01 Hz
AP Instruments Model 200 0.01 Hz

... in the Data Window. The delta data readout, displayed to the right of the absolute marker data, gives the difference between the master and the active data trace separately for both left and right traces. ...
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THS413x High-Speed, Low-Noise, Fully

... AVDD AVSS ...
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with respect to ground

... Feasible in smaller systems (up to 20 zones), but any circuits prone to grounding conditions from dampness or water damage are first to be investigated. ...
Advanced Commercial Power System Protection Practices
Advanced Commercial Power System Protection Practices

... This directional element is useful for applications with large amounts of zero-sequence currents available to reliably perform protection. However, in ungrounded systems the zero-sequence fault current available to a single measuring relay may be quite small for remote faults. Modern high-speed line ...
AD13280 Dual-Channel, 12-Bit, 80 MSPS ADC with Analog Input Signal
AD13280 Dual-Channel, 12-Bit, 80 MSPS ADC with Analog Input Signal

... Gain tests are performed on the AMP-IN-x-1 input voltage range. ...
pravin ladda
pravin ladda

TSHA5500
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LM34 Precision Fahrenheit Temperature Sensors (Rev. D)
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... proportional to the Fahrenheit temperature. The LM34 device has an advantage over linear temperature sensors calibrated in degrees Kelvin, because the user is not required to subtract a large constant voltage from its output to obtain convenient Fahrenheit scaling. The LM34 device does not require a ...
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... Keep in mind the following additional factors that influence the operating voltage: ...
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Comparison between NERC VAR-001-1a and Alberta VAR-001-AB-1a Voltage and Reactive Control

... Proposed Terms for the Consolidated Authoritative Document Glossary 3 : “aggregated generating facilities” means an aggregation of generating units, including any reactive power resources, which are: (i) designated by the ISO; and (ii) situated in the same proximate location at one or more point of ...
THS1031 数据资料 dataSheet 下载
THS1031 数据资料 dataSheet 下载

... analog input to the THS1031 can be either single-ended or differential. This device has a built-in clamp amplifier whose clamp input level can be driven from an external dc source or from an internal high-precision 10-bit digital clamp level programmable via an internal CLAMP register. A 3-bit PGA i ...
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Symmetric Gto And Snubber Component Characterization In Pwm
Symmetric Gto And Snubber Component Characterization In Pwm

< 1 ... 321 322 323 324 325 326 327 328 329 ... 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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