TL4242 数据资料 dataSheet 下载
... The TL4242 is an integrated adjustable constant-current source, driving loads up to 500 mA. The output current level can be adjusted via an external resistor. The device is designed to supply high-power LEDs (for example, OSRAM Dragon LA W57B) under the severe conditions of automotive applications, ...
... The TL4242 is an integrated adjustable constant-current source, driving loads up to 500 mA. The output current level can be adjusted via an external resistor. The device is designed to supply high-power LEDs (for example, OSRAM Dragon LA W57B) under the severe conditions of automotive applications, ...
Advantages of AC resistance thermometry bridges
... and level of accuracy. DC instruments have to reverse their measurement current periodically in an attempt to match the AC bridge performance and in doing so extend the measurement time. In effect, DC measurements are sequential, whereas AC bridge measurement is concurrent, or overlapping, so there ...
... and level of accuracy. DC instruments have to reverse their measurement current periodically in an attempt to match the AC bridge performance and in doing so extend the measurement time. In effect, DC measurements are sequential, whereas AC bridge measurement is concurrent, or overlapping, so there ...
Conditions necessary for an electric current
... conductors, and those through which it does not flow easily are called insulators. There are some materials through which it flows with some difficulty, and these are called semi-conductors. In the "old" days, before we knew about electrons, it was thought that electric charges flowed from what we c ...
... conductors, and those through which it does not flow easily are called insulators. There are some materials through which it flows with some difficulty, and these are called semi-conductors. In the "old" days, before we knew about electrons, it was thought that electric charges flowed from what we c ...
Document
... Fractional Order PID control of PFC Bridgeless Buck–Boost Converter-Fed BLDC Motor Drive converter, the current in inductor Li becomes discontinuous Mode III: In this mode, inductor Li1 enters discontinuous for certain duration in a switching period. Fig. 2(d) shows conduction, i.e., no energy is l ...
... Fractional Order PID control of PFC Bridgeless Buck–Boost Converter-Fed BLDC Motor Drive converter, the current in inductor Li becomes discontinuous Mode III: In this mode, inductor Li1 enters discontinuous for certain duration in a switching period. Fig. 2(d) shows conduction, i.e., no energy is l ...
physics_question bank - Kendriya Vidyalaya SAC, Vastrapur
... connected is moved on the metre scale such that we get zero deflection at some point. Let this point be l1 distance away from A. ...
... connected is moved on the metre scale such that we get zero deflection at some point. Let this point be l1 distance away from A. ...
OPA4872-EP 数据资料 dataSheet 下载
... At TA = +25°C, G = +2 V/V, RF = 523 Ω, and RL = 150 Ω, unless otherwise noted. ...
... At TA = +25°C, G = +2 V/V, RF = 523 Ω, and RL = 150 Ω, unless otherwise noted. ...
720301 Electrical Instruments and Measurements
... Example 5.1: A PMMC instrument with FSD of 100 A and a coil resistance of 1k is to be converted into a voltmeter. Determine the required multiplier resistance if the voltmeter is to measure 50V at full scale (Figure 3-15). Also calculate the applied voltage when the instrument indicate 0.8, 0.5, ...
... Example 5.1: A PMMC instrument with FSD of 100 A and a coil resistance of 1k is to be converted into a voltmeter. Determine the required multiplier resistance if the voltmeter is to measure 50V at full scale (Figure 3-15). Also calculate the applied voltage when the instrument indicate 0.8, 0.5, ...
Aalborg Universitet Modular Plug’n’Play Control Architectures for Three-phase Inverters in UPS Applications
... modules. Inductor current and capacitor voltage are measured to achieve the proposed control. Moreover, regarding reactive power sharing issues, each DC/AC individual reactive power is calculated each phase respectively in order to modify phase angle of its own output, which is called “phase-equal l ...
... modules. Inductor current and capacitor voltage are measured to achieve the proposed control. Moreover, regarding reactive power sharing issues, each DC/AC individual reactive power is calculated each phase respectively in order to modify phase angle of its own output, which is called “phase-equal l ...
Features
... CD74HC137, CD74HCT137, CD74HC237, CD74HCT237 Description The Harris CD74HC137, CD74HC237 and CD74HCT137, CD74HCT237 are high speed silicon gate CMOS decoders well suited to memory address decoding or data routing applications. Both circuits feature low power consumption usually associated with CMOS ...
... CD74HC137, CD74HCT137, CD74HC237, CD74HCT237 Description The Harris CD74HC137, CD74HC237 and CD74HCT137, CD74HCT237 are high speed silicon gate CMOS decoders well suited to memory address decoding or data routing applications. Both circuits feature low power consumption usually associated with CMOS ...
COOLPRO CATHODIC CONVERTERTM
... It is desirable to measure the potential of the structure while it is being protected to make sure it is close to the optimal -850mV level. The problem is that while protection current is flowing there is an ohmic error introduced in the reference cell measurement due to the CP current flowing throu ...
... It is desirable to measure the potential of the structure while it is being protected to make sure it is close to the optimal -850mV level. The problem is that while protection current is flowing there is an ohmic error introduced in the reference cell measurement due to the CP current flowing throu ...
Dual-Channel Digital Isolator ADuM1210 FEATURES
... The ADuM1210 1 is a dual-channel, digital isolator based on Analog Devices, Inc. iCoupler® technology. Combining high speed CMOS and monolithic transformer technology, this isolation component provides outstanding performance characteristics superior to alternatives such as optocoupler devices. By a ...
... The ADuM1210 1 is a dual-channel, digital isolator based on Analog Devices, Inc. iCoupler® technology. Combining high speed CMOS and monolithic transformer technology, this isolation component provides outstanding performance characteristics superior to alternatives such as optocoupler devices. By a ...
BK 2703B Multimeter Instructions
... 1. Power to the circuit is present and use caution to avoid becoming a part of the circuit. Again note: High voltages can be lethal! 2. Connect the black probe to the “com” and the red probe to the “mA” terminal for low current measurements; less than 200 mA (.200 A). Connect the red probe to the 10 ...
... 1. Power to the circuit is present and use caution to avoid becoming a part of the circuit. Again note: High voltages can be lethal! 2. Connect the black probe to the “com” and the red probe to the “mA” terminal for low current measurements; less than 200 mA (.200 A). Connect the red probe to the 10 ...
DRV103: PMW Low-Side Driver for Solenoids, Coils, Valves
... set a longer delay time. A resistor, analog voltage, or a voltage from a D/A converter can be used to control the duty cycle of the PWM output. The D/A converter must be able to sink a current 2.75 • IREF (IREF = 1.3V/RFREQ). Figure 2 illustrates a typical timing diagram with the Delay Adjust pin co ...
... set a longer delay time. A resistor, analog voltage, or a voltage from a D/A converter can be used to control the duty cycle of the PWM output. The D/A converter must be able to sink a current 2.75 • IREF (IREF = 1.3V/RFREQ). Figure 2 illustrates a typical timing diagram with the Delay Adjust pin co ...
Power MOSFET
A power MOSFET is a specific type of metal oxide semiconductor field-effect transistor (MOSFET) designed to handle significant power levels.Compared to the other power semiconductor devices, for example an insulated-gate bipolar transistor (IGBT) or a thyristor, its main advantages are high commutation speed and good efficiency at low voltages. It shares with the IGBT an isolated gate that makes it easy to drive. They can be subject to low gain, sometimes to degree that the gate voltage needs to be higher than the voltage under control.The design of power MOSFETs was made possible by the evolution of CMOS technology, developed for manufacturing integrated circuits in the late 1970s. The power MOSFET shares its operating principle with its low-power counterpart, the lateral MOSFET.The power MOSFET is the most widely used low-voltage (that is, less than 200 V) switch. It can be found in most power supplies, DC to DC converters, and low voltage motor controllers.