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Hex Inverters (Rev. B)
Hex Inverters (Rev. B)

MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits General Description
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... Make two sets of jumper cables that you will use all semester. Cut two 3” pieces of #14 stranded copper wire from the large spools (one red piece, and one black piece), and two 6” pieces (again, one red, and one black). Crimp and solder spade connectors to both ends of each wire. A. Use Excel spread ...
Product Specification  JF5036-00
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... 16.1 - DC output filter, consisting of one inductor and a one or more capacitors capable of limiting the output ripple with battery connected, when measured at the battery terminals, to the limits specified in NEMA PE5 (output ripple may be 20% higher on units operating at 50 Hz). 16.2 - Battery Eli ...
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... BDJ□□□0HFV series is thermostat output temperature sensor IC with built-in temperature detection element,constant current circuit,high-accuracy reference voltage source in one chip.Temperature detection can be realized at ±2.5℃ accuracy without complicated design.It is the best temperature sensor IC ...
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... compared to other energy sources. The amount of energy supplied to the earth in one day by the sun is sufficient to power the total energy needs of the earth for one year. Solar energy is clean and free of emissions, since it does not produce pollutants or by-products harmful to nature. The conversi ...
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< 1 ... 700 701 702 703 704 705 706 707 708 ... 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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