Design criteria for SEPIC and Cuk converters as power factor
... Factor Preregulator (PFP), which draws a sinusoidal-current at the input of converters [l-71. In general, boost, buck-boost (flyback), SEPIC or CUK converters can be used as PFP. In Table I, the advantages and disadvantages can be seen of each one. Despite its problems, the most popular topology use ...
... Factor Preregulator (PFP), which draws a sinusoidal-current at the input of converters [l-71. In general, boost, buck-boost (flyback), SEPIC or CUK converters can be used as PFP. In Table I, the advantages and disadvantages can be seen of each one. Despite its problems, the most popular topology use ...
GENERAL TROUBLESHOOTING
... If functions do not work under load or if hoist down, boom down, and extend in do not work the problem is likely lack of pressure. This may be caused by inadequate supply pressure or malfunction or contamination in the DPS or system relief valve. If hoist up, boom down, or extend out do not work, th ...
... If functions do not work under load or if hoist down, boom down, and extend in do not work the problem is likely lack of pressure. This may be caused by inadequate supply pressure or malfunction or contamination in the DPS or system relief valve. If hoist up, boom down, or extend out do not work, th ...
Capacitors Transient Analysis
... vC (t ) Ee • This makes the voltage across the resistor go down, so current in the circuit reduces until the point that the capacitor is fully discharged (V=0 and I=0). ...
... vC (t ) Ee • This makes the voltage across the resistor go down, so current in the circuit reduces until the point that the capacitor is fully discharged (V=0 and I=0). ...
LM34923 80V, 600 mA Constant On-Time Buck Switching Regulator
... The LM34923 operates in discontinuous conduction mode at light load currents, and continuous conduction mode at heavy load current. In discontinuous conduction mode, current through the output inductor starts at zero and ramps up to a peak during the on-time, then ramps back to zero before the end o ...
... The LM34923 operates in discontinuous conduction mode at light load currents, and continuous conduction mode at heavy load current. In discontinuous conduction mode, current through the output inductor starts at zero and ramps up to a peak during the on-time, then ramps back to zero before the end o ...
Experiment P41: Induction
... THEORY When a magnet is passed through a coil there is a changing magnetic flux through the coil which induces an electromotive force (emf) in the coil. According to Faraday’s law of induction: ...
... THEORY When a magnet is passed through a coil there is a changing magnetic flux through the coil which induces an electromotive force (emf) in the coil. According to Faraday’s law of induction: ...
REF5020A-Q1 数据资料 dataSheet 下载
... to approximately ±15°C. Although it is not generally suitable for accurate temperature measurements, it can be used to indicate temperature changes or for temperature compensation of analog circuitry. A temperature change of 30°C corresponds to an approximate 79-mV change in voltage at the TEMP pin. ...
... to approximately ±15°C. Although it is not generally suitable for accurate temperature measurements, it can be used to indicate temperature changes or for temperature compensation of analog circuitry. A temperature change of 30°C corresponds to an approximate 79-mV change in voltage at the TEMP pin. ...
Charge, Voltage and Capacitance
... Capacitance The ability of a component to store charge is known as capacitance. A device designed to store charge is called a capacitor. A typical capacitor consists of two conducting layers separated by an insulator. These layers are then often rolled into a cylindrical shape. Relationship between ...
... Capacitance The ability of a component to store charge is known as capacitance. A device designed to store charge is called a capacitor. A typical capacitor consists of two conducting layers separated by an insulator. These layers are then often rolled into a cylindrical shape. Relationship between ...
QS5U21
... No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Up ...
... No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Up ...
REF2912 数据资料 dataSheet 下载
... The REF29xx family of references features an extremely low dropout voltage. With the exception of the REF2912, which has a minimum supply requirement of 1.8V, the REF29xx can be operated with a supply of only 1mV above the output voltage in an unloaded condition. For loaded conditions, a typical dro ...
... The REF29xx family of references features an extremely low dropout voltage. With the exception of the REF2912, which has a minimum supply requirement of 1.8V, the REF29xx can be operated with a supply of only 1mV above the output voltage in an unloaded condition. For loaded conditions, a typical dro ...
FAN6755W / FAN6755UW mWSaver PWM Controller FAN
... The sensed voltage across the current-sense resistor is used for peak-current-mode control and pulse-by-pulse current limiting. Built-in slope compensation improves stability and prevents sub-harmonic oscillation. FAN6755W/UW inserts a synchronized positive-going ramp at every switching cycle as slo ...
... The sensed voltage across the current-sense resistor is used for peak-current-mode control and pulse-by-pulse current limiting. Built-in slope compensation improves stability and prevents sub-harmonic oscillation. FAN6755W/UW inserts a synchronized positive-going ramp at every switching cycle as slo ...
AD680 数据手册DataSheet 下载
... of a reference core and buffer amplifier. Based on a new, patented band gap reference design (Figure 5), the AD680 merges the amplifier and the core band gap function to produce a compact, complete precision reference. Central to the device is a high gain amplifier with an intentionally large propor ...
... of a reference core and buffer amplifier. Based on a new, patented band gap reference design (Figure 5), the AD680 merges the amplifier and the core band gap function to produce a compact, complete precision reference. Central to the device is a high gain amplifier with an intentionally large propor ...
Single Cell Lithium-Ion Charge Management Controller
... In order to maintain good AC stability in the constant voltage mode, a minimum capacitance of 10 µF is recommended to bypass the VBAT pin to GND. This capacitance provides compensation when there is no battery load. In addition, the battery and interconnections appear inductive at high frequencies. ...
... In order to maintain good AC stability in the constant voltage mode, a minimum capacitance of 10 µF is recommended to bypass the VBAT pin to GND. This capacitance provides compensation when there is no battery load. In addition, the battery and interconnections appear inductive at high frequencies. ...
Evaluates: MAX15039 MAX15039 Evaluation Kit General Description Features
... Verify that shunts are installed on the EV kit jumpers ...
... Verify that shunts are installed on the EV kit jumpers ...
HVDC Technology Line Commutated Converters
... Reactive power compensation – typically 35% of station rating from ac filters the balance from shunt banks Shunt reactors sometimes used at light load to absorb excess from filters ...
... Reactive power compensation – typically 35% of station rating from ac filters the balance from shunt banks Shunt reactors sometimes used at light load to absorb excess from filters ...
Application Note Closed Loop Control Maximizes MAPM-030400-010C00 and MAPM-030400-060C00 Module Performance
... than 31% across the band, with an average of 27 %. The last three columns of Table I show one method of improving the overall efficiency at the cost of some distortion. By lowering the DC supply voltage until the distortion reached 4%, the efficiency improved across the board at every frequency and ...
... than 31% across the band, with an average of 27 %. The last three columns of Table I show one method of improving the overall efficiency at the cost of some distortion. By lowering the DC supply voltage until the distortion reached 4%, the efficiency improved across the board at every frequency and ...
Evaluates: MAX5088/MAX5089 MAX5089 Evaluation Kit General Description Features
... Do not turn on the power supply until all connections are completed. 1) Verify that no shunt is installed across the pins of jumper JU1 (U1 enabled). ...
... Do not turn on the power supply until all connections are completed. 1) Verify that no shunt is installed across the pins of jumper JU1 (U1 enabled). ...
Voltage regulator
A voltage regulator is designed to automatically maintain a constant voltage level. A voltage regulator may be a simple ""feed-forward"" design or may include negative feedback control loops. It may use an electromechanical mechanism, or electronic components. Depending on the design, it may be used to regulate one or more AC or DC voltages.Electronic voltage regulators are found in devices such as computer power supplies where they stabilize the DC voltages used by the processor and other elements. In automobile alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.