Working With LED Display Drivers
... The 20-LEDvoltmeter The circuit in Fig. 11 uses two LM3914s in a 20-LED movingdot voltmeter. The inputs of IC1 and IC2 go in parallel, but IC1 reads 0 to 1.25 volts DC, while IC2 reads 1.25 to 2.50 volts DC. For the latter range, the low end of the 10-stage internal voltage divider in IC2 is connect ...
... The 20-LEDvoltmeter The circuit in Fig. 11 uses two LM3914s in a 20-LED movingdot voltmeter. The inputs of IC1 and IC2 go in parallel, but IC1 reads 0 to 1.25 volts DC, while IC2 reads 1.25 to 2.50 volts DC. For the latter range, the low end of the 10-stage internal voltage divider in IC2 is connect ...
Datasheet - Monolithic Power System
... LED temperature protection input. Connecting a NTC resistor from this pin to GND reduces the output current in high ambient temperature to protect the LED and driver. Analog dimming is accomplished with an external PWM signal through a resistor. A 1kΩ resistor is recommended. Ground. Current return ...
... LED temperature protection input. Connecting a NTC resistor from this pin to GND reduces the output current in high ambient temperature to protect the LED and driver. Analog dimming is accomplished with an external PWM signal through a resistor. A 1kΩ resistor is recommended. Ground. Current return ...
RL Line/Load Reactors
... harmonics). RL Reactors protect the controller from surges or spikes on the incoming power lines and reduce harmonic distortion. They help to reduce VFD produced non-linear current harmonics that may cause voltage distortion and effect other devices powered from the same AC mains. Multiple drives or ...
... harmonics). RL Reactors protect the controller from surges or spikes on the incoming power lines and reduce harmonic distortion. They help to reduce VFD produced non-linear current harmonics that may cause voltage distortion and effect other devices powered from the same AC mains. Multiple drives or ...
Chapter 1 AN OVERVIEW OF HARMONICS MODELING AND
... Frequency Scan: The frequency scan is usually the first step in a harmonic study. A frequency or impedance scan is a plot of the driving point (Thevenin) impedance at a system bus versus frequency. The bus of interest is one where a harmonic source exists. For simple system this impedance can be obt ...
... Frequency Scan: The frequency scan is usually the first step in a harmonic study. A frequency or impedance scan is a plot of the driving point (Thevenin) impedance at a system bus versus frequency. The bus of interest is one where a harmonic source exists. For simple system this impedance can be obt ...
A Hyperpolarization-Activated of the Medicinal Leech Inward
... characteristic bursting behavior. An Axoclamp-2A microelectrode voltage clamp (Axon Instruments) was used in either discontinuous current clamp (DCC) or switching single-electrode voltage-clamp (SEVC) mode. In both DCC and SEVC. the voltaae innut to the samnle and hold circuit during each cycle was ...
... characteristic bursting behavior. An Axoclamp-2A microelectrode voltage clamp (Axon Instruments) was used in either discontinuous current clamp (DCC) or switching single-electrode voltage-clamp (SEVC) mode. In both DCC and SEVC. the voltaae innut to the samnle and hold circuit during each cycle was ...
2N3819
... 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, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to res ...
... 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, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to res ...
Word
... C57.12.28™-2014 standard. The exterior of the unit shall be painted ANSI® 61 or ANSI® 70 gray. If a special paint color is required, a federal spec number or paint chip must be provided at the time of order. ...
... C57.12.28™-2014 standard. The exterior of the unit shall be painted ANSI® 61 or ANSI® 70 gray. If a special paint color is required, a federal spec number or paint chip must be provided at the time of order. ...
Complete PDF Edition (1,164 KB)
... short to the emitter to prevent operation. This makes it possible to obtain input capacitance characteristics and short-circuit capabilities similar to those of planar IGBTs. The structures of IGBTs can be categorized as punch-through (PT) or non-punch-through (NPT) structures. Generally, PT structu ...
... short to the emitter to prevent operation. This makes it possible to obtain input capacitance characteristics and short-circuit capabilities similar to those of planar IGBTs. The structures of IGBTs can be categorized as punch-through (PT) or non-punch-through (NPT) structures. Generally, PT structu ...
"Alternating Current Circuits and Electromagnetic Waves", of Serway
... AC voltage source, we first review what happens when a capacitor is placed in a circuit containing a DC source, such as a battery. When the switch is closed in a series circuit containing a battery, a resistor, and a capacitor, the initial charge on the plates of the capacitor is zero. The motion of ...
... AC voltage source, we first review what happens when a capacitor is placed in a circuit containing a DC source, such as a battery. When the switch is closed in a series circuit containing a battery, a resistor, and a capacitor, the initial charge on the plates of the capacitor is zero. The motion of ...
PCA9517 1. General description Level translating I
... While retaining all the operating modes and features of the I2C-bus system during the level shifts, it also permits extension of the I2C-bus by providing bidirectional buffering for both the data (SDA) and the clock (SCL) lines, thus enabling two buses of 400 pF. Using the PCA9517 enables the system ...
... While retaining all the operating modes and features of the I2C-bus system during the level shifts, it also permits extension of the I2C-bus by providing bidirectional buffering for both the data (SDA) and the clock (SCL) lines, thus enabling two buses of 400 pF. Using the PCA9517 enables the system ...
Capacitor
... Similarly to ESR, the capacitor's leads add equivalent series inductance or ESL to the component. This is usually significant only at relatively high frequencies. As inductive reactance is positive and increases with frequency, above a certain frequency capacitance will be canceled by inductance. Hi ...
... Similarly to ESR, the capacitor's leads add equivalent series inductance or ESL to the component. This is usually significant only at relatively high frequencies. As inductive reactance is positive and increases with frequency, above a certain frequency capacitance will be canceled by inductance. Hi ...
optimal design of active shunt filter using particle swarm optimization
... as 1-Ф Rectifier circuit on the supply system the THD exceeds the tolerance limits and so filters must be installed to mitigate the harmonics sufficiently and to bring THD within acceptable limits. The higher order harmonies are having very low magnitudes & can be neglected and so do the source volt ...
... as 1-Ф Rectifier circuit on the supply system the THD exceeds the tolerance limits and so filters must be installed to mitigate the harmonics sufficiently and to bring THD within acceptable limits. The higher order harmonies are having very low magnitudes & can be neglected and so do the source volt ...
Low Pass Filter (Ideal Block)
... amplified, modulated signal is then routed through a selective amplifier which passes signals in the frequency range of 30 - 50kHz, adding an additional 24dB of gain. The signal is then demodulated with the second modulation block, bringing it back down to the original baseband frequency. It is then ...
... amplified, modulated signal is then routed through a selective amplifier which passes signals in the frequency range of 30 - 50kHz, adding an additional 24dB of gain. The signal is then demodulated with the second modulation block, bringing it back down to the original baseband frequency. It is then ...
G6 - CIRCUIT COMPONENTS
... C. To ensure that one diode doesn't carry most of the current D. To act as an inductor ...
... C. To ensure that one diode doesn't carry most of the current D. To act as an inductor ...
Cascadable Three-Input Single-Output Current-Mode Universal Filter Using CDBAs
... In this paper, the CDBA-based MISO current-mode universal biquadratic filter is proposed to show versatility of CDBA in current-mode operation. The proposed circuit configuration with three input and single output terminals employs only three CDBAs, two virtually grounded resistors and two grounded ...
... In this paper, the CDBA-based MISO current-mode universal biquadratic filter is proposed to show versatility of CDBA in current-mode operation. The proposed circuit configuration with three input and single output terminals employs only three CDBAs, two virtually grounded resistors and two grounded ...
差分放大器系列AD8321 数据手册DataSheet 下载
... mented in this stage. After the vernier stage, a DAC provides the bulk of the AD8321’s attenuation (six bits or 36 dB). The signals in the preamp and vernier gain blocks are differential to improve the PSRR and linearity. A single-ended current is fed from the DAC into the output stage, which amplif ...
... mented in this stage. After the vernier stage, a DAC provides the bulk of the AD8321’s attenuation (six bits or 36 dB). The signals in the preamp and vernier gain blocks are differential to improve the PSRR and linearity. A single-ended current is fed from the DAC into the output stage, which amplif ...
EE01
... (A) The Fourier series coefficients do not exist. (B) The Fourier series coefficients exist but the reconstruction converges at no point. (C) The Fourier series coefficients exist and the reconstruction converges at most points. (D) The Fourier series coefficients exist and the reconstruction conver ...
... (A) The Fourier series coefficients do not exist. (B) The Fourier series coefficients exist but the reconstruction converges at no point. (C) The Fourier series coefficients exist and the reconstruction converges at most points. (D) The Fourier series coefficients exist and the reconstruction conver ...
Switched-mode power supply
A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.