Study and Simulation of Current Controlled PWM Inverters
... detail in [1].These are thus essentially open loop systems where the switching patterns are predetermined. There is no feedback and thus the system cannot ensure whether the output voltages and currents remain within desired margins. Current in this case and the nature of current (both magnitude and ...
... detail in [1].These are thus essentially open loop systems where the switching patterns are predetermined. There is no feedback and thus the system cannot ensure whether the output voltages and currents remain within desired margins. Current in this case and the nature of current (both magnitude and ...
Measuring short time intervals - Veletrh nápadů učitelů fyziky
... comparison with the exact equation shows that the error is lower than 5 % for a 40 ms interval. ...
... comparison with the exact equation shows that the error is lower than 5 % for a 40 ms interval. ...
Low-Ripple 1.8V/1.6V Spread-Spectrum
... Net capacitance of a ceramic capacitor decreases with increased DC bias. This degradation can result in lower capacitance than expected on the input and/or output, resulting in higher ripple voltages and currents. Using capacitors at DC bias voltages significantly below the capacitor voltage rating ...
... Net capacitance of a ceramic capacitor decreases with increased DC bias. This degradation can result in lower capacitance than expected on the input and/or output, resulting in higher ripple voltages and currents. Using capacitors at DC bias voltages significantly below the capacitor voltage rating ...
1270 Laboratory Project 3: Model of Tissue Impedance N. E. Cotter
... the laboratory exercise detailed below, you will make measurements with the aim of finding typical values for the parameters of this simplified circuit. B. Design Project Overview Your project is to design an oscillator that will produce a sinusoidal waveform at a frequency of 25 kHz and use that si ...
... the laboratory exercise detailed below, you will make measurements with the aim of finding typical values for the parameters of this simplified circuit. B. Design Project Overview Your project is to design an oscillator that will produce a sinusoidal waveform at a frequency of 25 kHz and use that si ...
TL494 Pulse-Width-Modulation Control Circuits (Rev. H)
... The design of the TL494 not only incorporates the primary building blocks required to control a switching power supply, but also addresses many basic problems and reduces the amount of additional circuitry required in the total design. The TL494 is a fixed-frequency pulse-width-modulation (PWM) cont ...
... The design of the TL494 not only incorporates the primary building blocks required to control a switching power supply, but also addresses many basic problems and reduces the amount of additional circuitry required in the total design. The TL494 is a fixed-frequency pulse-width-modulation (PWM) cont ...
FPGA board - ECE Users Pages
... accuracy of the ADC. During high currents, the output voltage of the I-to-V moves faster than 1LSB change for the ADC. Future versions of the I-to-V will incorporate a sample-and-hold to remove this problem. (b) Injection occurs at pulses down to 10µs and injection rates can be increased or decrease ...
... accuracy of the ADC. During high currents, the output voltage of the I-to-V moves faster than 1LSB change for the ADC. Future versions of the I-to-V will incorporate a sample-and-hold to remove this problem. (b) Injection occurs at pulses down to 10µs and injection rates can be increased or decrease ...
standing wave
... telephone signals, computer data in LANs, TV signals in cable TV systems, and signals from a transmitter to an antenna or from an antenna to a receiver. Transmission lines are also circuits. Their electrical characteristics are critical and must be matched to the equipment for successful communi ...
... telephone signals, computer data in LANs, TV signals in cable TV systems, and signals from a transmitter to an antenna or from an antenna to a receiver. Transmission lines are also circuits. Their electrical characteristics are critical and must be matched to the equipment for successful communi ...
BUF602 数据资料 dataSheet 下载
... (1000MHz) and high slew rate (8000V/µs) make it ideal for buffering very high-frequency signals. For AC-coupled applications, an optional mid-point reference (VREF) is provided, reducing the number of external components required and the necessary supply current to provide that reference. ...
... (1000MHz) and high slew rate (8000V/µs) make it ideal for buffering very high-frequency signals. For AC-coupled applications, an optional mid-point reference (VREF) is provided, reducing the number of external components required and the necessary supply current to provide that reference. ...
CIRCUITS LABORATORY EXPERIMENT 9 Operational Amplifiers
... to (3). The output voltage vo is limited to some significant fraction of the power supply voltage; the output current io is limited internally so that it does not overheat and destroy the device. However, for the range of voltages and currents to be experienced in this lab, these are very good appro ...
... to (3). The output voltage vo is limited to some significant fraction of the power supply voltage; the output current io is limited internally so that it does not overheat and destroy the device. However, for the range of voltages and currents to be experienced in this lab, these are very good appro ...
Analog Devices Welcomes Hittite Microwave Corporation
... Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. N ...
... Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. N ...
bias notes - Pearson Electronics
... the core, magnetic saturation will degrade performance. As a function of increasing Idc, the effective permeability of the core decreases, causing the droop rate and low-frequency cut-off point to increase. Also, the available flux swing is decreased, reducing the maximum viewable I•t. When viewing ...
... the core, magnetic saturation will degrade performance. As a function of increasing Idc, the effective permeability of the core decreases, causing the droop rate and low-frequency cut-off point to increase. Also, the available flux swing is decreased, reducing the maximum viewable I•t. When viewing ...
Circuit Note CN-0214
... The ADP3333-2.5 regulator can be replaced with the ADP120-2.5, which has a wider operating temperature range (−40°C to +125°C) and consumes less power (typically 20 µA vs. 70 µA), but has a lower maximum input voltage range (5.5 V vs. 12 V). If more GPIO pins are required on the microcontroller, the ...
... The ADP3333-2.5 regulator can be replaced with the ADP120-2.5, which has a wider operating temperature range (−40°C to +125°C) and consumes less power (typically 20 µA vs. 70 µA), but has a lower maximum input voltage range (5.5 V vs. 12 V). If more GPIO pins are required on the microcontroller, the ...
AD9708 数据手册DataSheet 下载
... The AD9708 is the 8-bit resolution member of the TxDAC series of high performance, low power CMOS digital-to-analog converters (DACs). The TxDAC family, which consists of pin compatible 8-, 10-, 12-, and 14-bit DACs, was specifically optimized for the transmit signal path of communication systems. A ...
... The AD9708 is the 8-bit resolution member of the TxDAC series of high performance, low power CMOS digital-to-analog converters (DACs). The TxDAC family, which consists of pin compatible 8-, 10-, 12-, and 14-bit DACs, was specifically optimized for the transmit signal path of communication systems. A ...
Isolated Sigma-Delta Modulator AD7400 FEATURES
... that converts an analog input signal to a high speed, 1-bit data stream with on-chip digital isolation based on Analog Devices, Inc. iCoupler® technology. The AD7400 operates from a 5 V power supply and accepts a differential input signal of ±200 mV (±320 mV full scale). The analog input is continuo ...
... that converts an analog input signal to a high speed, 1-bit data stream with on-chip digital isolation based on Analog Devices, Inc. iCoupler® technology. The AD7400 operates from a 5 V power supply and accepts a differential input signal of ±200 mV (±320 mV full scale). The analog input is continuo ...
ANALYSIS OF THE SIGNAL NETWORK NON-LINEARITY IN A METROLOGICAL LABORATORY Vaclav Papez
... not even as screws. Capacitors are micaceous, consisted of the unplated mica, with electrodes made of metal foil, because even the contact terminal with plating causes nonlinearity. A current sensor, which serves as indication of service current during measurement too, is inserted at the output of a ...
... not even as screws. Capacitors are micaceous, consisted of the unplated mica, with electrodes made of metal foil, because even the contact terminal with plating causes nonlinearity. A current sensor, which serves as indication of service current during measurement too, is inserted at the output of a ...
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.