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Evaluates: MAX8568A/MAX8568B MAX8568A Evaluation Kit General Description Features
Evaluates: MAX8568A/MAX8568B MAX8568A Evaluation Kit General Description Features

... by the on-chip synchronous-rectified step-up DC-DC converter, which has a default setting of 3.3V on the EV kit and is capable of 50mA output current. A secondary output provided by an on-chip LDO has a 2.5V output voltage for the MAX8568A and is capable of providing 10mA output current. When the ma ...
ELECTRIC CURRENT
ELECTRIC CURRENT

... Recall that heat flows through a conductor when a difference in temperature exists between its ends. Heat flows from the end of higher temperature to the end of lower temperature. When both ends reach the same temperature, the flow of heat ceases. Charge flows in a similar way. When the ends of an e ...
Understanding Noise at the Nanometer Scale
Understanding Noise at the Nanometer Scale

PDF Data Sheet Rev. 0
PDF Data Sheet Rev. 0

... RF Input. This pad is ac-coupled and matched to 50 Ω. See Figure 3 for the interface schematic. Gate Control Pad for the First and Second Stage Amplifiers. See Figure 4 for the interface schematic. Drain Bias Voltage Pads for the First and Second Stage Amplifiers. External bypass capacitors of 120 p ...
power amp - class-ab
power amp - class-ab

... small and hence iBn and iBp are negligible. As vI increases, iCn increases followed by an increase of iBn. IC1 decreases but VBE1 is almost constant. ...
TAS5102 数据资料 dataSheet 下载
TAS5102 数据资料 dataSheet 下载

... PVDD_X = 18 V, SE mode, RL = 4 Ω, ROC = 22 kΩ, CBST = 33-nF, audio frequency = 1 kHz, AES17 filter, FPWM = 384 kHz, ambient temperature = 25°C (unless otherwise noted). Audio performance is recorded as a chipset, using TAS5086 PWM processor with an effective modulation index limit of 96.1%. All perf ...
DAC8811 数据资料 dataSheet 下载
DAC8811 数据资料 dataSheet 下载

... Each DAC code determines the 2R leg switch position to either GND or IOUT. Because the DAC output impedance as seen looking into the IOUT terminal changes versus code, the external I/V converter noise gain will also change. Because of this, the external I/V converter op amp must have a sufficiently ...
AN-979 The Practical Limits of RS-485 (Rev. A)
AN-979 The Practical Limits of RS-485 (Rev. A)

... discussed above. However, there are some common practices which can extend RS-485 beyond its defined limits. The maximum number of nodes can exceed 32. RIN can be defined as ½ unit load or ¼ unit load, thus extending the number of nodes that can be attached to a single bus to 64 or 128 respectively. ...
MAX8550/MAX8551 Integrated DDR Power-Supply Solutions for Desktops, Notebooks, and Graphic Cards General Description
MAX8550/MAX8551 Integrated DDR Power-Supply Solutions for Desktops, Notebooks, and Graphic Cards General Description

... VVTTR = 0 or VVTTI ...
VO3052, VO3053 Optocoupler, Phototriac Output, Non-Zero
VO3052, VO3053 Optocoupler, Phototriac Output, Non-Zero

... Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use ...
KST92/KST93 PNP Epitaxial Silicon Transistor KS T92/KST9
KST92/KST93 PNP Epitaxial Silicon Transistor KS T92/KST9

... EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with ...
Aalborg Universitet Full Scale Test on a 100km, 150kV AC Cable Stella
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LTC1731-8.2/LTC1731-8.4 - Lithium
LTC1731-8.2/LTC1731-8.4 - Lithium

... The LTC1731-8.2/LTC1731-8.4 are linear battery charger controllers. The charge current is programmed by the combination of a program resistor (RPROG) from the PROG pin to ground and a sense resistor (RSENSE) between the VCC and SENSE pins. RPROG sets a program current through an internal trimmed 800 ...
An Analog Electronic Cochlea --------
An Analog Electronic Cochlea --------

Evaluates:  MAX16826 MAX16826 Evaluation Kit General Description Features
Evaluates: MAX16826 MAX16826 Evaluation Kit General Description Features

... control the brightness of the LEDs. Adjust the scrollbars in the DPWM Duty Cycle group box to change the duty cycles of the PWM signals and the values of the duty cycle (%) are shown in the adjacent edit boxes. Check the Set All Channels to 100% Duty Cycle checkbox to force all channel duty cycles t ...
High Temperature Guide (Rev. E)
High Temperature Guide (Rev. E)

... TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguar ...
Title : Feasible Performance Evaluations of Digitally
Title : Feasible Performance Evaluations of Digitally

High Brightness LED Controller using the MC9RS08KA2
High Brightness LED Controller using the MC9RS08KA2

... Recently, light emitting diodes (LEDs) have become very popular in general lighting area as a replacement technology for halogen low-voltage lighting. Customers are quickly recognizing the advantages of using LED lighting, which include long operating life, no fragile glass, no mercury, and low volt ...
Answers
Answers

... How are the objects connected together? In a loop (single loop-series, or muli-loop-parallel, but it must be a complete (closed) “circle” with wires (conductors). What is the evidence that an electric-circuit has been completed/closed? The receiver turns on (light, buzzer, motor)….energy flows. 2. T ...
MAX2163 EV kit - Maxim Integrated
MAX2163 EV kit - Maxim Integrated

... to a 557.143MHz frequency and a -100dBm power level. Connect the output of the RF signal generator to the SMA connector labeled UHF on the evaluation board. 4) Connect a 25-pin parallel cable between the PC’s parallel port and the MAX2163 evaluation board. 5) Turn on the ±3V power supply, followed b ...
DMX-K-DRV-23 Manual Rev 1.35
DMX-K-DRV-23 Manual Rev 1.35

Connection to the LV utility distribution network
Connection to the LV utility distribution network

High Power Laser Diode Driver Based on Power Converter
High Power Laser Diode Driver Based on Power Converter

... Electrically, a semiconductor laser behaves as a diode with a voltage turn-on knee greater than 1 V. When the laser is biased with a sufficient current so that lasing occurs, a further increase in injected current results in a proportional increase in laser optical output. For representative laser d ...
Maxim MAX13487 - RS232 converter
Maxim MAX13487 - RS232 converter

ISL9R30120G2 30 A, 1200 V STEALTH™ Diode ISL9R30120G2 — STEALTH™ Diode
ISL9R30120G2 30 A, 1200 V STEALTH™ Diode ISL9R30120G2 — STEALTH™ Diode

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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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