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Electrical Safety * NFPA Requirements
Electrical Safety * NFPA Requirements

SM30 Series 30 mm Barrel Sensor
SM30 Series 30 mm Barrel Sensor

AP1186
AP1186

... done by bringing out the control pin of the regulator that provides the base current to the power NPN and connecting it to a voltage that is greater than the voltage present at the Vin pin. This flexibility makes the AP1186 ideal for applications where dual inputs are available such as a computer mo ...
problem #1: charging a capacitor
problem #1: charging a capacitor

MAX6339 Quad Voltage µP Supervisory Circuit in SOT Package General Description
MAX6339 Quad Voltage µP Supervisory Circuit in SOT Package General Description

... Each of the internal comparators has a typical hysteresis of 0.3% with respect to its reset threshold. This builtin hysteresis improves the monitor’s immunity to ambient noise without significantly reducing threshold accuracy when an input sits at its specified reset voltage. The MAX6339 is also des ...
ppt_ch05
ppt_ch05

... components are connected across the same two points.  A common application of parallel circuits is the typical house wiring of many receptacles to the 120-V 60 Hz ac power line. ...
Nov 2000 Infinite Sample-and-Hold Outperforms Many Legacy
Nov 2000 Infinite Sample-and-Hold Outperforms Many Legacy

... integral nonlinearity contribution in both the ADC and the DAC. In this particular example, the DAC has more significant nonlinearity and offset error than the ADC. If higher linearity and offset performance are required, a 16-bit multiplying DAC, such as the LTC1595 could be used, because the 14-bi ...
FPF2193 / FPF2194 / FPF2195 Full
FPF2193 / FPF2194 / FPF2195 Full

MAX14571/MAX14572/MAX14573 Adjustable Overvoltage and Overcurrent Protectors with High Accuracy EVALUATION KIT AVAILABLE
MAX14571/MAX14572/MAX14573 Adjustable Overvoltage and Overcurrent Protectors with High Accuracy EVALUATION KIT AVAILABLE

... exceeds the OVLO threshold or falls below the UVLO, the internal FETs are turned off to prevent damage to the protected components. If the OVLO or the UVLO pin is set below the external OVLO or UVLO select thresholds (VOVLOSEL and VUVLOSEL), the device automatically selects the internal Q3% (typ) ac ...
Electronics in Motion and Conversion May 2015
Electronics in Motion and Conversion May 2015

... generation is depicted in Figure 1. Both devices are based on the successful trench-fieldstop technology. Furthermore, in order to handle the higher level of power dissipation during a short circuit event a thick copper (Cu) metallization on the front side is implemented. The success of this approac ...
A Cookbook Approach to Single Supply DC-Coupled Op
A Cookbook Approach to Single Supply DC-Coupled Op

... amp design becomes an equivalent challenge to single supply design. When an op amp is powered from a single supply all the op amp inputs appear to be referenced from half the power supply voltage, VCC/2. When the signal sources are referenced to ground or any potential other than VCC/2, some type of ...
May 2004 Fully Differential Gain-Block Family Simplifies Interface
May 2004 Fully Differential Gain-Block Family Simplifies Interface

THD BiValve technical Specs.
THD BiValve technical Specs.

... input with 12AX7 preamp tubes in the amp gives a wide range of clean sounds from “Country” clean and crisp to Jazz-direction warmth. With the controls pegged and a relatively high-output humbucker, the low-gain input can deliver a very convincing “Texas Blues” type of overdrive. Plug into the high-g ...
K046016266
K046016266

Direct current - elev
Direct current - elev

J. Hu, A.D. Sagneri, J.M. Rivas, Y. Han, S.M. Davis, and D.J. Perreault, “High-Frequency Resonant SEPIC Converter with Wide Input and Output Voltage Ranges,   2008 IEEE Power Electronics Specialists Conference , June 2008, pp. 1397 – 1406
J. Hu, A.D. Sagneri, J.M. Rivas, Y. Han, S.M. Davis, and D.J. Perreault, “High-Frequency Resonant SEPIC Converter with Wide Input and Output Voltage Ranges,   2008 IEEE Power Electronics Specialists Conference , June 2008, pp. 1397 – 1406

... network which transforms the equivalent rectifier impedance from 17.14Ω to 4Ω at about the operating frequency is required in order to deliver 4W at an input voltage of 3.6V . The component values for such a matching network are LS = 76nH and CS = 1120pF . If CF is to be comprised solely of the paras ...
W12D1_Presentation_s13_v01_jwb
W12D1_Presentation_s13_v01_jwb

... resistor and switch. The switch is initially open but at t = 0 it is closed. A very long time after the switch is closed, the current in the circuit is ...
2015 Ram 2500/3500 Snowplow Installation Quad / Base Hook
2015 Ram 2500/3500 Snowplow Installation Quad / Base Hook

... Disconnection of the OEM headlamps will be interpreted by the electronic module as a burned out bulb therefore; it is recommended that the aftermarket lamps utilize the OEM headlamp circuits. NOTE – the aftermarket bulbs must draw no more current than the OEM bulbs (9007QL). Provide a means of allow ...
LEP 4.1.02 Wheatstone bridge
LEP 4.1.02 Wheatstone bridge

... The experimental set up is as shown in Fig. 1. The resistance to be investigated (single, parallel-connected, series-connected and wire resistances) are shown in Fig. 2 as Rx. Since the slide wire measuring bridge gives the best reading accuracy in its central part, it is useful to bring the measuri ...
10-Frequency Response Basic Concept XC = 1/2πfc This formula
10-Frequency Response Basic Concept XC = 1/2πfc This formula

IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

Data Sheet - Asahi Kasei Microdevices
Data Sheet - Asahi Kasei Microdevices

... 125 psec (max) at CLK1 205 psec (max) at CLK2 ...
EXPERIMENT 2_3
EXPERIMENT 2_3

... If the lights on your New Year tree are wired in series, what will happen when one bulb burns out? What will happen if the bulbs are wired in parallel? ...
LF353-N 数据资料 dataSheet 下载
LF353-N 数据资料 dataSheet 下载

... dB frequency of the closed loop gain and consequently there is negligible effect on stability margin. However, if the feedback pole is less than approximately 6 times the expected 3 dB frequency a lead capacitor should be placed from the output to the input of the op amp. The value of the added capa ...
Electrical Resistivity as a Function of Temperature
Electrical Resistivity as a Function of Temperature

< 1 ... 1058 1059 1060 1061 1062 1063 1064 1065 1066 ... 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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