EMI Filter Design
... common triac-based wall dimmers is sometimes required at 120V nominal line. The circuit can be designed to handle both. The input EMI filter for the PFC-Flyback converter must be very carefully designed if it is to operate with triac dimmers. Any reversal of current following the triac firing will c ...
... common triac-based wall dimmers is sometimes required at 120V nominal line. The circuit can be designed to handle both. The input EMI filter for the PFC-Flyback converter must be very carefully designed if it is to operate with triac dimmers. Any reversal of current following the triac firing will c ...
High Voltage Power Supplies
... Make Precise Current Measurements Lower Than 1µA Use a sensitive Keithley measurement instrument, such as a Keithley SourceMeter® Source Measure Unit (SMU) instrument, to measure current drawn by the device under test (DUT) that is below the sensitivity of the Series 2290 Power Supplies. Keithley So ...
... Make Precise Current Measurements Lower Than 1µA Use a sensitive Keithley measurement instrument, such as a Keithley SourceMeter® Source Measure Unit (SMU) instrument, to measure current drawn by the device under test (DUT) that is below the sensitivity of the Series 2290 Power Supplies. Keithley So ...
Switching Pattern-Independent Simulation Model for Brushless DC
... to set up the model equations of the system. The torque equation and the motion equation do not change, but the voltage equation can change since the current paths in the inverter vary according to the current commutation, the applied switching pattern and on/off states of the switch. The phase curr ...
... to set up the model equations of the system. The torque equation and the motion equation do not change, but the voltage equation can change since the current paths in the inverter vary according to the current commutation, the applied switching pattern and on/off states of the switch. The phase curr ...
7810-13
... every access and gets incremented every 2500 cycles through a global signal (negligible overhead) • After 10,000 clock cycles, the counter reaches the max value and triggers a decay • Adaptive decay: Start with a short decay period; if you have a quick miss, double the period; if there is no miss, h ...
... every access and gets incremented every 2500 cycles through a global signal (negligible overhead) • After 10,000 clock cycles, the counter reaches the max value and triggers a decay • Adaptive decay: Start with a short decay period; if you have a quick miss, double the period; if there is no miss, h ...
91049
... CT‘s, mounted internally on each phase, are used by the Tri-Phase control to monitor line current. If the current monitored is greater than the minimum trip level, the control begins a user-selected time-current-curve (TCC) delay sequence. At completion of the programmed TCC delay, a signal is issue ...
... CT‘s, mounted internally on each phase, are used by the Tri-Phase control to monitor line current. If the current monitored is greater than the minimum trip level, the control begins a user-selected time-current-curve (TCC) delay sequence. At completion of the programmed TCC delay, a signal is issue ...
ACS752SCA-100 - Digi-Key
... been saturated, usually when the device has been subjected to a full-scale or high-current overload condition. The magnetic offset is largely dependent on the material used as a flux concentrator. The larger magnetic offsets are observed at the lower operating temperatures. Accuracy (ETOT). The accu ...
... been saturated, usually when the device has been subjected to a full-scale or high-current overload condition. The magnetic offset is largely dependent on the material used as a flux concentrator. The larger magnetic offsets are observed at the lower operating temperatures. Accuracy (ETOT). The accu ...
AN1571, Digital Blood Pressure Meter
... supply; this yields a system that is ratiometric. By nature of this ratiometric system, variations in the voltage of the power supplied to the system will have no effect on the system accuracy. The liquid crystal display (LCD) is directly driven from I/O ports A, B, and C on the microcontroller. Th ...
... supply; this yields a system that is ratiometric. By nature of this ratiometric system, variations in the voltage of the power supplied to the system will have no effect on the system accuracy. The liquid crystal display (LCD) is directly driven from I/O ports A, B, and C on the microcontroller. Th ...
Shocking
... It was necessary per the requirements of the flyback transformer to design a power supply with multiple outputs. We started the power supply with a 25.2V CT 3A step down transformer. This transformer accepted the 120VAC 60Hz from the wall. After being rectified with a full-wave rectifier we separate ...
... It was necessary per the requirements of the flyback transformer to design a power supply with multiple outputs. We started the power supply with a 25.2V CT 3A step down transformer. This transformer accepted the 120VAC 60Hz from the wall. After being rectified with a full-wave rectifier we separate ...
B. Tech. (Electrical Engineering)
... & Rectifier type Ammeters & Voltmeters , Electrodynamic Wattmeter, Three Phase Wattmeter, Power in three phase system , errors & remedies in wattmeter and energy meter. ...
... & Rectifier type Ammeters & Voltmeters , Electrodynamic Wattmeter, Three Phase Wattmeter, Power in three phase system , errors & remedies in wattmeter and energy meter. ...
Appl. Phys. Lett. 104, 014104 (2014)
... relatively weak optical nonlinearities. At the same time, microwave engineering has employed complicated circuitry with active devices to realise nonlinear interaction in the radio and microwave domains.2 However, the interacting frequencies must usually obey fixed relationships determined by conser ...
... relatively weak optical nonlinearities. At the same time, microwave engineering has employed complicated circuitry with active devices to realise nonlinear interaction in the radio and microwave domains.2 However, the interacting frequencies must usually obey fixed relationships determined by conser ...
ADuM3100 数据手册DataSheet下载
... superior to alternatives, such as optocoupler devices. Configured as a pin-compatible replacement for existing high speed optocouplers, the ADuM3100 supports data rates as high as 25 Mbps and 100 Mbps. The ADuM3100 operates with a voltage supply ranging from 3.0 V to 5.5 V, boasts a propagation dela ...
... superior to alternatives, such as optocoupler devices. Configured as a pin-compatible replacement for existing high speed optocouplers, the ADuM3100 supports data rates as high as 25 Mbps and 100 Mbps. The ADuM3100 operates with a voltage supply ranging from 3.0 V to 5.5 V, boasts a propagation dela ...
125-µA Standby, High-Efficiency Power Supply
... terminal. The UL773A does allow it with certain restrictions and one of the important requirements is that the current flowing through the ground should be limited to 0.5 mA. This is to ensure that the ground current does not exceed the trip limit of the earth leakage circuit breaker, which may be t ...
... terminal. The UL773A does allow it with certain restrictions and one of the important requirements is that the current flowing through the ground should be limited to 0.5 mA. This is to ensure that the ground current does not exceed the trip limit of the earth leakage circuit breaker, which may be t ...
Tektronix PS280 User Manual
... two variable outputs for a wide variety of test and experimental uses. The PS280 or PS283 contains two identical, independently adjustable DC power supplies that you can vary from 0 to 30 V. The current on the PS280 variable power supplies varies from 0 to 2 A. The current on the PS283 variable powe ...
... two variable outputs for a wide variety of test and experimental uses. The PS280 or PS283 contains two identical, independently adjustable DC power supplies that you can vary from 0 to 30 V. The current on the PS280 variable power supplies varies from 0 to 2 A. The current on the PS283 variable powe ...
ASIC 2001: FORMATTING AND SUBMITTING YOUR PAPER
... this paper, the authors propose a new variability-aware method that clusters gates at design time into a handful of carefully chosen independent body-bias groups, which are then individually tuned post-silicon for each die. Certain intra-die variation model, such as linear gradient, is assumed and a ...
... this paper, the authors propose a new variability-aware method that clusters gates at design time into a handful of carefully chosen independent body-bias groups, which are then individually tuned post-silicon for each die. Certain intra-die variation model, such as linear gradient, is assumed and a ...
KM50-E - Omron
... 1) Do not store, install or use the product in the following environment. ・Locations subject to vibration or strong shocks. ・Locations where the Unit is unstable. ・Locations subject to outdoor, direct sunlight, or weather. ・Locations subject to temperature or humidity beyond the specificatio ...
... 1) Do not store, install or use the product in the following environment. ・Locations subject to vibration or strong shocks. ・Locations where the Unit is unstable. ・Locations subject to outdoor, direct sunlight, or weather. ・Locations subject to temperature or humidity beyond the specificatio ...
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.