ultrasonic radar based
... As stated earlier, the time resolution of sound is only about 3 microseconds, so speed and fast execution time of code was not of great importance (compared with some other application like NTSC video signals). This made ultrasound an easy decision. Another hardware tradeoff that was taken into acco ...
... As stated earlier, the time resolution of sound is only about 3 microseconds, so speed and fast execution time of code was not of great importance (compared with some other application like NTSC video signals). This made ultrasound an easy decision. Another hardware tradeoff that was taken into acco ...
Design of self-oscillating electronic ballast with high efficiency
... impedance. So there is no way for limiting the lamp current. In reference [3] proposed the input current shaper for both lamp current stabilization as well as to improve the power factor. Therefore, to limit lamp current and provide a stable operating point, the input DC-DC converter must control th ...
... impedance. So there is no way for limiting the lamp current. In reference [3] proposed the input current shaper for both lamp current stabilization as well as to improve the power factor. Therefore, to limit lamp current and provide a stable operating point, the input DC-DC converter must control th ...
Aalborg Universitet Secondary Control for Reactive Power Sharing in Droop-Controlled Islanded MicroGrids
... impedance mismatches, the voltage at the PCC of each inverter is not equal. Hence, equal reactive power sharing cannot be achieved as the voltage droops settle at different values. On the other hand, the real power sharing capabilities are not affected by line impedance mismatches, as the frequency ...
... impedance mismatches, the voltage at the PCC of each inverter is not equal. Hence, equal reactive power sharing cannot be achieved as the voltage droops settle at different values. On the other hand, the real power sharing capabilities are not affected by line impedance mismatches, as the frequency ...
MAX4864L/MAX4865L/MAX4866L/MAX4867 Overvoltage Protection Controllers with Reverse Polarity Protection General Description
... back-to-back configuration has almost zero reverse current when the adapter is not present or when the adapter voltage is below the UVLO threshold. If reverse current leakage is not a concern, a single MOSFET can be used. This approach has half the loss of the back-to-back configuration when used wi ...
... back-to-back configuration has almost zero reverse current when the adapter is not present or when the adapter voltage is below the UVLO threshold. If reverse current leakage is not a concern, a single MOSFET can be used. This approach has half the loss of the back-to-back configuration when used wi ...
Electronic Components for Green Power Generation
... offer high ripple current capabilities and useful lifetimes for inverters in solar power generation. Alternatively, the PCC® (power capacitor chip) can also be designed into such applications. This compact power capacitor features extremely low ESR and ESL values and can be mounted directly onto the ...
... offer high ripple current capabilities and useful lifetimes for inverters in solar power generation. Alternatively, the PCC® (power capacitor chip) can also be designed into such applications. This compact power capacitor features extremely low ESR and ESL values and can be mounted directly onto the ...
MAX3314 460kbps, 1µA, RS-232-Compatible Transceiver General Description Features
... worst-case loads of 3kΩ in parallel with 1000pF. When SHDN is driven low, the transmitter is disabled and put into 3-state mode. The transmitter input does not have a pull-up resistor. Connect to ground if unused. ...
... worst-case loads of 3kΩ in parallel with 1000pF. When SHDN is driven low, the transmitter is disabled and put into 3-state mode. The transmitter input does not have a pull-up resistor. Connect to ground if unused. ...
LT5519 - 0.7GHz to 1.4GHz High Linearity Upconverting Mixer.
... broadband 50Ω match with return loss better than 10dB at frequencies up to 1800MHz. The RF output band ranges from 700MHz to 1400MHz, with an internal RF transformer providing a 50Ω impedance match across the band. Low side or high side LO injection can be used. IF Input Port The IF inputs are conne ...
... broadband 50Ω match with return loss better than 10dB at frequencies up to 1800MHz. The RF output band ranges from 700MHz to 1400MHz, with an internal RF transformer providing a 50Ω impedance match across the band. Low side or high side LO injection can be used. IF Input Port The IF inputs are conne ...
OPA4188 0.03-μV/°C Drift, Low-Noise, Rail-to
... Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absol ...
... Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absol ...
Torque‐Speed Measurements
... values should be reduced to the lowest setting that still meets the system performance requirements. The maximum speed will also be reduced with a lower voltage. 12V batteries have an output range of approximately 10.5 VDC – 13.1 VDC. When determining what parameters to use, make sure to test wit ...
... values should be reduced to the lowest setting that still meets the system performance requirements. The maximum speed will also be reduced with a lower voltage. 12V batteries have an output range of approximately 10.5 VDC – 13.1 VDC. When determining what parameters to use, make sure to test wit ...
Institutionen för systemteknik Department of Electrical Engineering Modeling and Control of Electromechanical
... Scania is studied, in particular the focus is on how to exchange the intelligent actuators used today with dumb ones. An intelligent actuator contains its own control electronics and computational power, bought as a unit from suppliers by Scania and controlled via the CAN bus. A dumb actuator contai ...
... Scania is studied, in particular the focus is on how to exchange the intelligent actuators used today with dumb ones. An intelligent actuator contains its own control electronics and computational power, bought as a unit from suppliers by Scania and controlled via the CAN bus. A dumb actuator contai ...
Images SI Stepper Motor Controller Datasheet
... (externally controlled) controller mode. High input selects Master mode, Low input selects slave mode. In Master mode, Stepper Motor advances automatically by internally generated clock cycles. In Host Control (external control – slave mode) Stepper Motor advances next step on falling edge of extern ...
... (externally controlled) controller mode. High input selects Master mode, Low input selects slave mode. In Master mode, Stepper Motor advances automatically by internally generated clock cycles. In Host Control (external control – slave mode) Stepper Motor advances next step on falling edge of extern ...
MAX5888 3.3V, 16-Bit, 500Msps High Dynamic Performance DAC with Differential LVDS Inputs
... speeds up to 500MHz. The converter consists of separate input and DAC registers, followed by a currentsteering circuit. This circuit is capable of generating differential full-scale currents in the range of 2mA to 20mA. An internal current-switching network in combination with external 50Ω terminati ...
... speeds up to 500MHz. The converter consists of separate input and DAC registers, followed by a currentsteering circuit. This circuit is capable of generating differential full-scale currents in the range of 2mA to 20mA. An internal current-switching network in combination with external 50Ω terminati ...
OPA343 OPA2343 OPA4343 SINGLE-SUPPLY, RAIL-TO-RAIL
... One method of improving capacitive load drive in the unity gain configuration is to insert a 10Ω to 20Ω resistor in series with the output, as shown in Figure 4. This significantly reduces ringing with large capacitive loads. However, if there is a resistive load in parallel with the capacitive load ...
... One method of improving capacitive load drive in the unity gain configuration is to insert a 10Ω to 20Ω resistor in series with the output, as shown in Figure 4. This significantly reduces ringing with large capacitive loads. However, if there is a resistive load in parallel with the capacitive load ...
I RLY 1 E
... relay identi?ed as RLY-l (see FIG. 2) which is rated for high voltage and high current. It should be able to withstand high currents from the de?brillator 26 and provide greater than 10,000 volt isolation between the de?brillator 26 and the RF supply 31 so that the electrosurgery unit 31 is protecte ...
... relay identi?ed as RLY-l (see FIG. 2) which is rated for high voltage and high current. It should be able to withstand high currents from the de?brillator 26 and provide greater than 10,000 volt isolation between the de?brillator 26 and the RF supply 31 so that the electrosurgery unit 31 is protecte ...
CN-0123 利用自动校准技术将16通道、16位DAC AD5360的失调电压降至1 mV以下
... provides a method of calibrating that removes an unknown offset error. When using high precision, high resolution DACs in industrial process control and instrumentation applications, low offset is often a critical specification. The circuit uses builtin features of the AD5360 in conjunction with an ...
... provides a method of calibrating that removes an unknown offset error. When using high precision, high resolution DACs in industrial process control and instrumentation applications, low offset is often a critical specification. The circuit uses builtin features of the AD5360 in conjunction with an ...
The Basics of Photoelectric Controls
... emit light energy. LED's offer several advantages over incandescent bulbs when applied to photoelectric controls. They can be rapidly turned on and off, are extremely small, consume very little power, and have an extremely long life (100,000 hours continuous). Also, since LED's are solid state devic ...
... emit light energy. LED's offer several advantages over incandescent bulbs when applied to photoelectric controls. They can be rapidly turned on and off, are extremely small, consume very little power, and have an extremely long life (100,000 hours continuous). Also, since LED's are solid state devic ...
Making Motors Dance Our Tune
... • Through most of the 20th Century it was the only way to get speed controlled systems large enough for mining applications ...
... • Through most of the 20th Century it was the only way to get speed controlled systems large enough for mining applications ...
63 Series BATTERY POWER SYSTEM 24 VOLT 6A, 12A, 25A
... Indicates that the charger has been shut down by the high output voltage shutdown circuit. Probable causes of a high DC shutdown are as follows: a) The float voltage has been increased above the pre-set shutdown voltage b) The high voltage shutdown set point has been changed from the factory setting ...
... Indicates that the charger has been shut down by the high output voltage shutdown circuit. Probable causes of a high DC shutdown are as follows: a) The float voltage has been increased above the pre-set shutdown voltage b) The high voltage shutdown set point has been changed from the factory setting ...
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.