Gain Equalization Improves Flyback Performance
... Fig. 2 shows the circuit with linear control, which results in the output current being proportional to VC2. From Fig. 3, E1 and E2 are used to force the current-mode statespace flyback model to operate in voltage mode. R1 through R8, D1, D5, D6, D7 and X6 comprise the log converter, which performs t ...
... Fig. 2 shows the circuit with linear control, which results in the output current being proportional to VC2. From Fig. 3, E1 and E2 are used to force the current-mode statespace flyback model to operate in voltage mode. R1 through R8, D1, D5, D6, D7 and X6 comprise the log converter, which performs t ...
Product news - Danielson Europe
... The UMT-H has been extended with 7 additional rated currents and is now offered with a total of 24 rated currents, which cover the rated currents between 160 mA and 30 A. The compact SMD fuse stands out with its high breaking capacity. With its square, compact design, it is the space saving alternat ...
... The UMT-H has been extended with 7 additional rated currents and is now offered with a total of 24 rated currents, which cover the rated currents between 160 mA and 30 A. The compact SMD fuse stands out with its high breaking capacity. With its square, compact design, it is the space saving alternat ...
Harmonic Oscillator
... speed v through a low-pressure, rarefied gas. Assume the mean free path of the gas molecules is large compared to the dimensions of the plate so that the deceleration of the plate may be thought of in terms of individual collisions between the plate and the molecules rather than hydrodynamic flow. T ...
... speed v through a low-pressure, rarefied gas. Assume the mean free path of the gas molecules is large compared to the dimensions of the plate so that the deceleration of the plate may be thought of in terms of individual collisions between the plate and the molecules rather than hydrodynamic flow. T ...
Applications Circuits: Current Measurement
... Two conventions are used in current measurement—high side (Figure 7- 1a.) and low side (Figure 7- 1b.) shunts. “High side or low side” refers to whether the shunt is placed in series with the supply output and load or it is placed in the ground return. The current is the same either way, of course, ...
... Two conventions are used in current measurement—high side (Figure 7- 1a.) and low side (Figure 7- 1b.) shunts. “High side or low side” refers to whether the shunt is placed in series with the supply output and load or it is placed in the ground return. The current is the same either way, of course, ...
Control of Harmonics in 6-Pulse Rectifiers
... Figure 4.2 Source voltage and firing pulses...................................................................... 36 Figure 4.3 Load voltage and current for purely resistive load .......................................... 37 Figure 4.4 Single-phase full-wave bridge rectifier with R and L load ...... ...
... Figure 4.2 Source voltage and firing pulses...................................................................... 36 Figure 4.3 Load voltage and current for purely resistive load .......................................... 37 Figure 4.4 Single-phase full-wave bridge rectifier with R and L load ...... ...
Introduction to Power Management
... – Depending on how the transformer is wound it can have both positive and negative output voltage – Because of the transformer can buck down from much higher input voltage rails – Can have multiple output voltage of different polarities (e.g. +- 12V) by having more than one secondary winding - but o ...
... – Depending on how the transformer is wound it can have both positive and negative output voltage – Because of the transformer can buck down from much higher input voltage rails – Can have multiple output voltage of different polarities (e.g. +- 12V) by having more than one secondary winding - but o ...
500V CoolMOS CE Newest 500V Superjunction MOSFET for
... nearly constant Ron*A over all V(BR)DSS classes which brings a reduction of about 70% Ron*A with a value of 1.95Ω*mm² of the 500V CE in comparison to a conventional or standard MOSFET. “The basic idea is simple, instead of having electrons flowing through a relatively high resistive (high voltage bl ...
... nearly constant Ron*A over all V(BR)DSS classes which brings a reduction of about 70% Ron*A with a value of 1.95Ω*mm² of the 500V CE in comparison to a conventional or standard MOSFET. “The basic idea is simple, instead of having electrons flowing through a relatively high resistive (high voltage bl ...
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... 70 dB was estimated by adopting a fourthorder modulator. However, this value can be significantly improved by increasing the switching frequency or the modulator order. ...
... 70 dB was estimated by adopting a fourthorder modulator. However, this value can be significantly improved by increasing the switching frequency or the modulator order. ...
Cascaded Current–Voltage Control to Improve the Power Quality for
... inverter is connected to the grid, both controllers are active; when the inverter is not connected to the grid, the current controller is working under zero current reference. Hence, no extra effort is needed when changing the operation mode of the inverter, which considerably facilitates the seamle ...
... inverter is connected to the grid, both controllers are active; when the inverter is not connected to the grid, the current controller is working under zero current reference. Hence, no extra effort is needed when changing the operation mode of the inverter, which considerably facilitates the seamle ...
Group 1
... for modern functions such as the standby mode available in many computers. The most recent specification of the ATX standard PSU as of mid-2008 is version 2.31. ...
... for modern functions such as the standby mode available in many computers. The most recent specification of the ATX standard PSU as of mid-2008 is version 2.31. ...
UC3851 数据资料 dataSheet 下载
... Limiting the minimum value for ISENSE into pin 11 will establish a maximum duty cycle clamp. CR terminal can be used as an input port for current mode control. Conventional operational amplifier for closed-loop gain and phase compensation. Low output impedance; unity-gain stable. The output is held ...
... Limiting the minimum value for ISENSE into pin 11 will establish a maximum duty cycle clamp. CR terminal can be used as an input port for current mode control. Conventional operational amplifier for closed-loop gain and phase compensation. Low output impedance; unity-gain stable. The output is held ...
BD9300F
... The soft start function will be required to prevent an excessive increase in the coil current and overshoot of the output voltage, while in startup operation. Fig. 20 shows the relationship between the capacitor and the soft start time. Referring to this Figure, set the capacitor. It is recommended ...
... The soft start function will be required to prevent an excessive increase in the coil current and overshoot of the output voltage, while in startup operation. Fig. 20 shows the relationship between the capacitor and the soft start time. Referring to this Figure, set the capacitor. It is recommended ...
BDTIC
... As decribed in section 2.5, there is high frequency ripple current peak to peak IHF passing through boost choke. This ripple will also go into AC line power network. The current filter is necessary to reduce the amplitude of high frequency current component. The filtering circuit consists of a capac ...
... As decribed in section 2.5, there is high frequency ripple current peak to peak IHF passing through boost choke. This ripple will also go into AC line power network. The current filter is necessary to reduce the amplitude of high frequency current component. The filtering circuit consists of a capac ...
MAX1636 Low-Voltage, Precision Step-Down Controller for Portable CPU Power General Description
... The MAX1636 features a logic-controlled and synchronizable, fixed-frequency, pulse-width-modulation (PWM) operating mode that reduces noise and RF interference in sensitive mobile communications and pen-entry applications. Holding SKIP high forces fixed-frequency mode for lowest noise under all load ...
... The MAX1636 features a logic-controlled and synchronizable, fixed-frequency, pulse-width-modulation (PWM) operating mode that reduces noise and RF interference in sensitive mobile communications and pen-entry applications. Holding SKIP high forces fixed-frequency mode for lowest noise under all load ...
Wind Power Integration in Isolated Grids enabled by
... improve the energy balance of an isolated power system. One way of introducing additional controllability so that the pumped storage can contribute to the steady state frequency control of the system will be to use several separate pumps, so that the load in pumping mode can be controlled in steps. ...
... improve the energy balance of an isolated power system. One way of introducing additional controllability so that the pumped storage can contribute to the steady state frequency control of the system will be to use several separate pumps, so that the load in pumping mode can be controlled in steps. ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.