Thomas Jan98.qxd
... 110V AC which can be dangerous and even lethal! Do not attempt this project unless you are skilled at working with 110V AC. Let’s assume that you want to build both power supplies mentioned above and house them as a single unit. To simplify things, we’ll juxtapose the two circuit boards in the illus ...
... 110V AC which can be dangerous and even lethal! Do not attempt this project unless you are skilled at working with 110V AC. Let’s assume that you want to build both power supplies mentioned above and house them as a single unit. To simplify things, we’ll juxtapose the two circuit boards in the illus ...
Evaluates: MAX8857A MAX8857A Evaluation Kit General Description Features
... where ILED(MAX) is the maximum LED current in amps. Maximum LED current is programmed to 25mA using a 10Ω resistor. ...
... where ILED(MAX) is the maximum LED current in amps. Maximum LED current is programmed to 25mA using a 10Ω resistor. ...
Buck-Converter Design Demystified
... The input capacitance required for a stepdown converter depends on the impedance of the input power source. For common laboratory power supplies, 10 µF to 22 µF of capacitance per ampere of output current is usually sufficient. Given the design parameters of Fig. 1, you can calculate the input-ripple ...
... The input capacitance required for a stepdown converter depends on the impedance of the input power source. For common laboratory power supplies, 10 µF to 22 µF of capacitance per ampere of output current is usually sufficient. Given the design parameters of Fig. 1, you can calculate the input-ripple ...
resp1 impedance pneumograph
... trans-abdominal impedance changes that result from respiration. Merely placing two electrodes across the area of interest allows the RESP1 to monitor respiration not only in humans, but also in a wide variety of animals. The RESP1 induces a small and safe high-frequency (30KHz) current to flow betwe ...
... trans-abdominal impedance changes that result from respiration. Merely placing two electrodes across the area of interest allows the RESP1 to monitor respiration not only in humans, but also in a wide variety of animals. The RESP1 induces a small and safe high-frequency (30KHz) current to flow betwe ...
NSEQ-2 Twin Topology Stereo Parametric Equalizer
... to: damage to recordings, microphones, mixing consoles, or any associated equipment, downtime costs, loss of goodwill, or claims of any party dealing with purchaser for such damages resulting from the use of this product. All warranties, express and implied, including the warranties of merchantabili ...
... to: damage to recordings, microphones, mixing consoles, or any associated equipment, downtime costs, loss of goodwill, or claims of any party dealing with purchaser for such damages resulting from the use of this product. All warranties, express and implied, including the warranties of merchantabili ...
AN-916 APPLICATION NOTE
... ADE7569, integrates the analog front end and fixed function DSP of the Analog Devices, Inc., energy (ADE) metering ICs with an enhanced 8052 MCU core. The integrated RTC, LCD driver, and peripherals create an electronic energy meter with an LCD display within a single part. The ADE7566/ADE7569/ ADE7 ...
... ADE7569, integrates the analog front end and fixed function DSP of the Analog Devices, Inc., energy (ADE) metering ICs with an enhanced 8052 MCU core. The integrated RTC, LCD driver, and peripherals create an electronic energy meter with an LCD display within a single part. The ADE7566/ADE7569/ ADE7 ...
HS3414301435
... 1980s, the Electric Power research Institute (EPRI) formulated the Flexible AC transmission voltage and power flow and reduces dynamic disturbances. Usually the main purpose of FACTS Transmission system limits: Power flow over a transmission system is limited by some followings: System stability ...
... 1980s, the Electric Power research Institute (EPRI) formulated the Flexible AC transmission voltage and power flow and reduces dynamic disturbances. Usually the main purpose of FACTS Transmission system limits: Power flow over a transmission system is limited by some followings: System stability ...
ADF7023-J (Rev. 0)
... The RC oscillator can be used to control the wake-up timing of the ADF7023-J low power modes. Its typical accuracy is specified as 1.5% after a calibrat ion at 25°C. The calibration range of the RC oscillator is not sufficient to ensure a 1.5% typical accuracy on all devices. This can result in the ...
... The RC oscillator can be used to control the wake-up timing of the ADF7023-J low power modes. Its typical accuracy is specified as 1.5% after a calibrat ion at 25°C. The calibration range of the RC oscillator is not sufficient to ensure a 1.5% typical accuracy on all devices. This can result in the ...
5.4.6. Breakdown mechanisms in BJTs
... junction is reversed biased, it is this junction where breakdown typically occurs. Just like for a pn junction the breakdown mechanism can be due to either avalanche multiplication as well as tunneling. However, the collector doping in power devices tends to be low-doped either to ensure a large eno ...
... junction is reversed biased, it is this junction where breakdown typically occurs. Just like for a pn junction the breakdown mechanism can be due to either avalanche multiplication as well as tunneling. However, the collector doping in power devices tends to be low-doped either to ensure a large eno ...
SS311PT|SS411P Bipolar Hall-Effect Digital Position Sensors with
... supplied on tape and reel allows for a compact design with automated component placement, helping to reduce ...
... supplied on tape and reel allows for a compact design with automated component placement, helping to reduce ...
A Hybrid DC-DC Converter for Standalone Applications
... conversion. Galvanic isolation is used in isolated MICs, but the disadvantage is the larger number of active switches present in it. Non-isolated converters have the advantages of small size, high power density and more efficiency. Based on buck and/or boost converter structures, various non-isolate ...
... conversion. Galvanic isolation is used in isolated MICs, but the disadvantage is the larger number of active switches present in it. Non-isolated converters have the advantages of small size, high power density and more efficiency. Based on buck and/or boost converter structures, various non-isolate ...
ACS Control with opto-Triac
... To switch-on a Triac or an ACS, a gate current must be applied between Gate (G) and terminal A1 for Triac, or between Gate and terminal COM for ACS. For Triac, the gate current could be positive and negative thanks to the two back-to-back diodes, implemented between G and A1. The silicon structure o ...
... To switch-on a Triac or an ACS, a gate current must be applied between Gate (G) and terminal A1 for Triac, or between Gate and terminal COM for ACS. For Triac, the gate current could be positive and negative thanks to the two back-to-back diodes, implemented between G and A1. The silicon structure o ...
4CX1500B 8660
... allowed to exceed 5% above or below the rated value. The cathode and one side of the heater are internally connected. It is recommended that the heater voltage be applied for a period of not less than 3 minutes before other operating voltages are applied. From an initial cold condition, tube operati ...
... allowed to exceed 5% above or below the rated value. The cathode and one side of the heater are internally connected. It is recommended that the heater voltage be applied for a period of not less than 3 minutes before other operating voltages are applied. From an initial cold condition, tube operati ...
Fluke 1750 Three-Phase Power Recorder
... control multiple instruments from a distance easily, without the need for a laptop computer (laptops can also be used when desired). ...
... control multiple instruments from a distance easily, without the need for a laptop computer (laptops can also be used when desired). ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... admittances or impedances. The main problem of this approach is that the equivalent admittance varies with the circuit operating condition, due to the nonlinear nature of the real load. Another important aspect is that some nonlinear loads should be modeled by harmonic voltage sources rather than by ...
... admittances or impedances. The main problem of this approach is that the equivalent admittance varies with the circuit operating condition, due to the nonlinear nature of the real load. Another important aspect is that some nonlinear loads should be modeled by harmonic voltage sources rather than by ...
Harmonic Currents in the Data Center
... Many desktop personal computers still present a nonlinear load to the AC supply. This is because they have a power supply design known as a "capacitor input switch mode power supply". Much of today’s Information Technology equipment including servers, routers, hubs, and storage systems almost univer ...
... Many desktop personal computers still present a nonlinear load to the AC supply. This is because they have a power supply design known as a "capacitor input switch mode power supply". Much of today’s Information Technology equipment including servers, routers, hubs, and storage systems almost univer ...
Multiple-Output, Variable-Output DC Power Supply
... between the four voltage outputs. A wattmeter is also being looked into in order to monitor the power output. Technical Problem The power supply will be built with a circuit board and basic circuit components, including transformers, resistors, inductors, capacitors, and diodes. Complicated componen ...
... between the four voltage outputs. A wattmeter is also being looked into in order to monitor the power output. Technical Problem The power supply will be built with a circuit board and basic circuit components, including transformers, resistors, inductors, capacitors, and diodes. Complicated componen ...
8-bit analog-to-digital converters with differential inputs
... successive-approximation logic to match an analog differential input voltage (VI+ – VI –) to a corresponding tap on the 256-resistor network. The most significant bit (MSB) is tested first. After eight comparisons (64 clock periods), an 8-bit binary code (1111 1111 = full scale) is transferred to an ...
... successive-approximation logic to match an analog differential input voltage (VI+ – VI –) to a corresponding tap on the 256-resistor network. The most significant bit (MSB) is tested first. After eight comparisons (64 clock periods), an 8-bit binary code (1111 1111 = full scale) is transferred to an ...
New 2x2x0.9mm KX022 Accelerometer with FIFO/FILO
... Low Power: The KX022 offers customers superior power performance at only 2 µA in standby, 10 µA at normal resolution, and 130 µA at high resolution. In addition, the KX022 includes a motion wake-up function that allows users to conserve battery life in their products by powering down other systems ...
... Low Power: The KX022 offers customers superior power performance at only 2 µA in standby, 10 µA at normal resolution, and 130 µA at high resolution. In addition, the KX022 includes a motion wake-up function that allows users to conserve battery life in their products by powering down other systems ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.