Design Guidelines for Quasi-Resonant Flyback Converters Using
... guidelines for a quasi-resonant flyback converter employing HFC0100. Step-by-step design procedure for quasi-resonant flyback converter using HFC0100 can be applied to various offline applications, mainly including transformer design, output filter design and component selection. ...
... guidelines for a quasi-resonant flyback converter employing HFC0100. Step-by-step design procedure for quasi-resonant flyback converter using HFC0100 can be applied to various offline applications, mainly including transformer design, output filter design and component selection. ...
NCL30051LEDGEVB 35-50 Volt, Up to 1.5 Amp, Offline Power Factor
... secondary pins out with very short wires, the primary leakage can be measured with an inductance meter. In this design the leakage inductance worked out to be between 90 and 100 mH, sufficient to produce a resonant frequency of 36 kHz with a pair of 0.1 mF capacitors (in parallel effectively) for C6 ...
... secondary pins out with very short wires, the primary leakage can be measured with an inductance meter. In this design the leakage inductance worked out to be between 90 and 100 mH, sufficient to produce a resonant frequency of 36 kHz with a pair of 0.1 mF capacitors (in parallel effectively) for C6 ...
Abstract
... among power engineers, for its reliability, effectiveness and coincidence with practice. In this section we use this simulator to examine the performance of a DVR controlled by the mentioned algorithm, in mitigation voltage sag side effects on load. Among possible voltage sag conditions, we have cho ...
... among power engineers, for its reliability, effectiveness and coincidence with practice. In this section we use this simulator to examine the performance of a DVR controlled by the mentioned algorithm, in mitigation voltage sag side effects on load. Among possible voltage sag conditions, we have cho ...
Module G485.2 Capacitors - science
... or less in the order they appear. Because there are three different equations relating to energy storage in capacitors, there are several instances where students have to choose which to use for their own convenience. There are many pitfalls, not deliberate, into which students can fall because of d ...
... or less in the order they appear. Because there are three different equations relating to energy storage in capacitors, there are several instances where students have to choose which to use for their own convenience. There are many pitfalls, not deliberate, into which students can fall because of d ...
Inside the Power Supply
... varnish on magnet wire, is not recognized as insulation. Therefore, the body of a resistor is considered an “uninsulated live part.” – Inside a transformer that crosses the primary-tosecondary safety barrier, creepage distances force “margins” at the edges of windings, thereby increasing the size of ...
... varnish on magnet wire, is not recognized as insulation. Therefore, the body of a resistor is considered an “uninsulated live part.” – Inside a transformer that crosses the primary-tosecondary safety barrier, creepage distances force “margins” at the edges of windings, thereby increasing the size of ...
introduction
... Draw the internal block diagram of IC LM 723 voltage regulator and explain? [MAY/JUNE-2007] The IC 723 general purpose regulator can be adjusted over a wide range of both positive and negative regulated voltage. This IC is a low current device, but can be boosted to provide 5 amps or more current by ...
... Draw the internal block diagram of IC LM 723 voltage regulator and explain? [MAY/JUNE-2007] The IC 723 general purpose regulator can be adjusted over a wide range of both positive and negative regulated voltage. This IC is a low current device, but can be boosted to provide 5 amps or more current by ...
2.6.1 Voltage Comparator Word Document | GCE AS/A
... As it stands the circuit has no adjustment of the temperature at which the output of the op-amp switches from high to low. It turns out that it is quite easy to make this circuit adjustable, simply by making any one of the three resistors R1, R2 or R3 variable. Whichever one is chosen to be variable ...
... As it stands the circuit has no adjustment of the temperature at which the output of the op-amp switches from high to low. It turns out that it is quite easy to make this circuit adjustable, simply by making any one of the three resistors R1, R2 or R3 variable. Whichever one is chosen to be variable ...
ADP1864 数据手册DataSheet 下载
... low as 0.8 V with ±1.25% accuracy, for up to 5 A load currents, from input voltages as high as 14 V. The ADP1864 provides system flexibility by allowing accurate setting of the current limit with an external resistor, and the output voltage is easily adjustable using two external resistors. The ADP1 ...
... low as 0.8 V with ±1.25% accuracy, for up to 5 A load currents, from input voltages as high as 14 V. The ADP1864 provides system flexibility by allowing accurate setting of the current limit with an external resistor, and the output voltage is easily adjustable using two external resistors. The ADP1 ...
sc2440tetrt
... in Figure 1 is modified to run at 500KHz and 2.5MHz while keeping the inductor ripple current constant. The modified component values are tabulated in Table 1 and efficiencies at these frequencies are shown in Figure 5. The efficiency of the 1.3MHz 5V regulator in Figure 1 is also plotted for the ea ...
... in Figure 1 is modified to run at 500KHz and 2.5MHz while keeping the inductor ripple current constant. The modified component values are tabulated in Table 1 and efficiencies at these frequencies are shown in Figure 5. The efficiency of the 1.3MHz 5V regulator in Figure 1 is also plotted for the ea ...
Research Journal of Applied Sciences, Engineering and Technology 7(2): 388-395,... ISSN: 2040-7459; e-ISSN: 2040-7467
... harmonic current components flowing in the AC source side is reduced to about 0.075 the component released by the TCR. This is thoroughly coinciding with the value obtained from Eq. (14) after substituting for n by 3. Consequently, the third harmonic current component flowing in the AC source side w ...
... harmonic current components flowing in the AC source side is reduced to about 0.075 the component released by the TCR. This is thoroughly coinciding with the value obtained from Eq. (14) after substituting for n by 3. Consequently, the third harmonic current component flowing in the AC source side w ...
MAX1644 2A, Low-Voltage, Step-Down Regulator with Synchronous Rectification and Internal Switches General Description
... The MAX1644 synchronous, current-mode, constant-offtime, PWM DC-DC converter steps down input voltages of +3V to +5.5V to a preset output voltage of either +3.3V or +2.5V, or to an adjustable output voltage from +1.1V to VIN. The device delivers up to 2A of continuous load current. Internal switches ...
... The MAX1644 synchronous, current-mode, constant-offtime, PWM DC-DC converter steps down input voltages of +3V to +5.5V to a preset output voltage of either +3.3V or +2.5V, or to an adjustable output voltage from +1.1V to VIN. The device delivers up to 2A of continuous load current. Internal switches ...
Speed Controllers
... graph it can be seen that if the DC level went higher, the pulses would get even thinner. An example circuit for this is shown below. This uses a counter and weighted resistor ladder to generate the triangle wave (in fact it will generate a sawtooth, but you'll still get a PWM signal at the end of i ...
... graph it can be seen that if the DC level went higher, the pulses would get even thinner. An example circuit for this is shown below. This uses a counter and weighted resistor ladder to generate the triangle wave (in fact it will generate a sawtooth, but you'll still get a PWM signal at the end of i ...
Reduction of Voltage Stresses in Buck-Boost
... capacitor is a relatively low value capacitor, which means that under start up conditions the capacitor will charge very fast to the line peak voltage and thereby reducing the inrush-current. Since a large capacitor is used in the Modified SEPIC converter, the issue of inrush-current has to be addre ...
... capacitor is a relatively low value capacitor, which means that under start up conditions the capacitor will charge very fast to the line peak voltage and thereby reducing the inrush-current. Since a large capacitor is used in the Modified SEPIC converter, the issue of inrush-current has to be addre ...
Step-up converter for electromagnetic vibrational energy
... on vibrational power generators using electromagnetic [16], piezoelectric [3] [7-9], and electrostatic principles [3] [8]. These generators require the use of a converter circuit to convert the ac-generated voltage to a usable dc level. In particular an electromagnetic generator generally requires a ...
... on vibrational power generators using electromagnetic [16], piezoelectric [3] [7-9], and electrostatic principles [3] [8]. These generators require the use of a converter circuit to convert the ac-generated voltage to a usable dc level. In particular an electromagnetic generator generally requires a ...
Understanding ESR in Capacitors
... work well as a power supply filter. But, notice the results at 1000 Hz. The good capacitor allows 10 watts to pass to the speaker, while the bad capacitor restricts the power to only 5.6 watts. The differences become even more pronounced at higher frequencies. The reason for this effect is the relat ...
... work well as a power supply filter. But, notice the results at 1000 Hz. The good capacitor allows 10 watts to pass to the speaker, while the bad capacitor restricts the power to only 5.6 watts. The differences become even more pronounced at higher frequencies. The reason for this effect is the relat ...
JU2216461651
... controller should be used, which will regulate the dc voltage to the reference value. The transient performance of the compensator is decided by the computation time of average load power and losses in the compensator. In most DSTATCOM applications, losses in the VSI are a fraction of the average lo ...
... controller should be used, which will regulate the dc voltage to the reference value. The transient performance of the compensator is decided by the computation time of average load power and losses in the compensator. In most DSTATCOM applications, losses in the VSI are a fraction of the average lo ...
LTC6905 - 17MHz to 170MHz Resistor Set SOT-23 Oscillator.
... eliminating the need for tables to calculate frequency. The oscillator can be easily programmed using the simple formula outlined below: ...
... eliminating the need for tables to calculate frequency. The oscillator can be easily programmed using the simple formula outlined below: ...
NCV8851BDBGEVB NCV8851B Automotive Grade Synchronous Buck Controller Evaluation Board
... Controller Evaluation Board User's Manual ...
... Controller Evaluation Board User's Manual ...
SiP12205 300 kHz N-Channel FET Synchronous PWM Buck
... b. Derate 20 mW/°C above + 70 °C Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the sp ...
... b. Derate 20 mW/°C above + 70 °C Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the sp ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""