A8513: Wide Input Voltage Range, High Efficiency Fault Tolerant
... The LED current can be reduced from the 100% current level by PWM dimming using the EN/PWM pin. When the EN/PWM pin is pulled high, the A8513 turns on and the LED pin sinks 100% current (figure 5). When EN/PWM is pulled low, the boost converter and LED sink are turned off. The compensation (COMP) pi ...
... The LED current can be reduced from the 100% current level by PWM dimming using the EN/PWM pin. When the EN/PWM pin is pulled high, the A8513 turns on and the LED pin sinks 100% current (figure 5). When EN/PWM is pulled low, the boost converter and LED sink are turned off. The compensation (COMP) pi ...
CS5463 - Single Phase, Bi-directional Power/Energy IC
... The CS5463 is a CMOS monolithic power measurement device with a computation engine and an energy-to-frequency pulse output. The CS5463 combines a programmable gain amplifier, two Analog-to-Digital Converters (ADCs), system calibration, and a computation engine on a single chip. The CS5463 is desi ...
... The CS5463 is a CMOS monolithic power measurement device with a computation engine and an energy-to-frequency pulse output. The CS5463 combines a programmable gain amplifier, two Analog-to-Digital Converters (ADCs), system calibration, and a computation engine on a single chip. The CS5463 is desi ...
NFC110 - Master Meter
... Because the output value menu is the last one pressing a long SET will move the computer to the LOCK menu. Use UP to lock the settings and press short SET to go back to the output value menu. General practice would be the settings to be unlocked at the first (KFACTOR) menu, then changed and locked a ...
... Because the output value menu is the last one pressing a long SET will move the computer to the LOCK menu. Use UP to lock the settings and press short SET to go back to the output value menu. General practice would be the settings to be unlocked at the first (KFACTOR) menu, then changed and locked a ...
Microwave harmonic generation in fiber
... It is seen from Eq. (13) that second harmonic of the modulation signal ωRF is generated, however small OMD and ideal photodetector have been supposed. The modulation signal cannot be recovered if the phase difference ϕ2 ϕ1 is equal to (2n + 1)π . Generally the optical field E (t ) is composed of sev ...
... It is seen from Eq. (13) that second harmonic of the modulation signal ωRF is generated, however small OMD and ideal photodetector have been supposed. The modulation signal cannot be recovered if the phase difference ϕ2 ϕ1 is equal to (2n + 1)π . Generally the optical field E (t ) is composed of sev ...
Current Control of VSI-PWM Inverters
... to observe the operating characteristics of the hysteresis controller when the load counter EMF is zero. The line current and current reference are shown in Fig. 9. The inverter has periods of high switching frequency which are interrupted occasionally when the inverter applies a zero voltage vector ...
... to observe the operating characteristics of the hysteresis controller when the load counter EMF is zero. The line current and current reference are shown in Fig. 9. The inverter has periods of high switching frequency which are interrupted occasionally when the inverter applies a zero voltage vector ...
Ohmic Drop: Part 2
... therefore the ohmic drop must be measured experimentally. The three most common methods for measuring ohmic drop are: ...
... therefore the ohmic drop must be measured experimentally. The three most common methods for measuring ohmic drop are: ...
Electrical measurements
... Moreover, we have not said anything about the concentration of charge carriers, which depends on materials, temperature and composition. While these are the interesting parameters for us as chemists, physicists or materials scientists, this course is not so much about that. Instead it is about the m ...
... Moreover, we have not said anything about the concentration of charge carriers, which depends on materials, temperature and composition. While these are the interesting parameters for us as chemists, physicists or materials scientists, this course is not so much about that. Instead it is about the m ...
CHAPTER 9: TEMPERATURE, PRESSURE, STRAIN AND MOTION
... Measurement with thermocouples In order to provide circuits optimized for temperature measurements, manufacturers have devised special thermocouple digital thermometers. Essentially, the thermometer is a digital voltmeter that uses a computer memory to store the Seebeck coefficients and a microproce ...
... Measurement with thermocouples In order to provide circuits optimized for temperature measurements, manufacturers have devised special thermocouple digital thermometers. Essentially, the thermometer is a digital voltmeter that uses a computer memory to store the Seebeck coefficients and a microproce ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) ISSN: 2278-1676
... The power generation capacity electric boing 787 air bass A380 airplanes is above 1.4 MW and 850KW respectively. In order to reduce the weight of the aircraft electric power should be delivered at a high voltage With low current and low conduction losses this technology leads to simpler Equipment an ...
... The power generation capacity electric boing 787 air bass A380 airplanes is above 1.4 MW and 850KW respectively. In order to reduce the weight of the aircraft electric power should be delivered at a high voltage With low current and low conduction losses this technology leads to simpler Equipment an ...
BC847BVC Features Mechanical Data
... Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifically n ...
... Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifically n ...
CD54ACT20 数据资料 dataSheet 下载
... http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requ ...
... http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requ ...
An Introduction to the Silicon Photomultiplier
... In this way, a single SPAD sensor operated in Geiger-mode functions as a photon-triggered switch, in either an ‘on’ or ‘off’ state. This results in a binary output such as illustrated in Figure 3. Regardless of the number of photons absorbed within a diode at the same time, it will produce a signal ...
... In this way, a single SPAD sensor operated in Geiger-mode functions as a photon-triggered switch, in either an ‘on’ or ‘off’ state. This results in a binary output such as illustrated in Figure 3. Regardless of the number of photons absorbed within a diode at the same time, it will produce a signal ...
sMHF single and dual dc-dc converters
... The SMHF converter’s feed-forward compensation system provides excellent dynamic response and noise rejection. Audio rejection is typically 50 dB. Typical output voltage response for a 50% to 100% step load transient is as low as 1.8% with a 150 µs recovery time, typical. See Table 5 on page 5 for m ...
... The SMHF converter’s feed-forward compensation system provides excellent dynamic response and noise rejection. Audio rejection is typically 50 dB. Typical output voltage response for a 50% to 100% step load transient is as low as 1.8% with a 150 µs recovery time, typical. See Table 5 on page 5 for m ...
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.