INDIANA UNIVERSITY - PURDUE UNIVERSITY FORT WAYNE DEPARTMENT OF ENGINEERING
... motor, but the motor will also transfer energy back to the battery. ...
... motor, but the motor will also transfer energy back to the battery. ...
Driving Large LCDs with LCD Peripheral of the
... network. Because the R ladder is connected between VCC and GND, there is a continuous current leaking through the network that adds to current consumed by the LCD driver. Increasing the resistor values not only reduces the current consumption but also reduces the LCD contrast, because the RC time co ...
... network. Because the R ladder is connected between VCC and GND, there is a continuous current leaking through the network that adds to current consumed by the LCD driver. Increasing the resistor values not only reduces the current consumption but also reduces the LCD contrast, because the RC time co ...
Capacitor Protection
... circuit selection current (whichever is larger) (440.41) and the controller must also have a locked rotor current rating equal to or greater than the locked rotor current of the compressor [440.41(A)]. Where the controller serves a hermetic motor-compressor(s) plus other loads, the controller rating ...
... circuit selection current (whichever is larger) (440.41) and the controller must also have a locked rotor current rating equal to or greater than the locked rotor current of the compressor [440.41(A)]. Where the controller serves a hermetic motor-compressor(s) plus other loads, the controller rating ...
CHAPTER 4 – AC Machinery Fundamentals
... friction, hence it doesn’t wear down the slip ring. If the positive end of a dc voltage source is connected to one brush and the negative end is connected to the other, then the same dc voltage will be applied to the field winding at all times regardless of the angular position or speed of the rotor ...
... friction, hence it doesn’t wear down the slip ring. If the positive end of a dc voltage source is connected to one brush and the negative end is connected to the other, then the same dc voltage will be applied to the field winding at all times regardless of the angular position or speed of the rotor ...
A Simple Substrate Heater Device With Temperature Controller for
... available substrate heaters overcome these limitations at a high cost, including features such as large substrate diameter, substrate rotation, dual cooling/heating or designs which are inert to oxygen or corrosive atmospheres [3-6]. Depending on the applications, those features might be required; h ...
... available substrate heaters overcome these limitations at a high cost, including features such as large substrate diameter, substrate rotation, dual cooling/heating or designs which are inert to oxygen or corrosive atmospheres [3-6]. Depending on the applications, those features might be required; h ...
experimental characterization regarding two types of
... large variations of flux between devices can be noticed, which implies obvious differences on luminous efficiency. The CRI for all HP LEDs is roughly the same, with the exception of the warm-white types (LEDs 4 and 5). It seems that warmer LEDs tend to have better CRI, indeed. The color temperature ...
... large variations of flux between devices can be noticed, which implies obvious differences on luminous efficiency. The CRI for all HP LEDs is roughly the same, with the exception of the warm-white types (LEDs 4 and 5). It seems that warmer LEDs tend to have better CRI, indeed. The color temperature ...
Bidirectional VF Control of Single and 3
... programmable dead band. Programming is greatly simplified using PIC18FXX31 devices, because it reduces the task of generating the software PWMs, which takes most of the processor resource on a PIC16F72. The source code included with this application note (see Appendix A: “Source Code”) also includes ...
... programmable dead band. Programming is greatly simplified using PIC18FXX31 devices, because it reduces the task of generating the software PWMs, which takes most of the processor resource on a PIC16F72. The source code included with this application note (see Appendix A: “Source Code”) also includes ...
The Products - BEC Distribution
... Thick Film resistors in SOT 227 pack (100 watts) and the larger 250 watt pack. These are designed for high frequency and pulse load applications. 2 and 4 terminal versions with different circuits ...
... Thick Film resistors in SOT 227 pack (100 watts) and the larger 250 watt pack. These are designed for high frequency and pulse load applications. 2 and 4 terminal versions with different circuits ...
PFC MegaPAC EL
... n For power expansion, use booster ConverterPACs. Viewing the unit from the output terminal side, always insert boosters to the right side of the driver. n Do not use boosters as independent outputs. Disconnecting bus bars will damage booster ConverterPACs. n For booster arrays, do not ...
... n For power expansion, use booster ConverterPACs. Viewing the unit from the output terminal side, always insert boosters to the right side of the driver. n Do not use boosters as independent outputs. Disconnecting bus bars will damage booster ConverterPACs. n For booster arrays, do not ...
ZXTP4003G - Diodes Incorporated
... written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instruct ...
... written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instruct ...
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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.