Especially LED lighting markets are harsh reality of products reliability and sustainability with... more Especially LED lighting markets are harsh reality of products reliability and sustainability with flicker problems. While AC-DC LED driver half-wave and full-wave rectification can deliver unidirectional current, neither produces a constant voltage.Producing steady DC from a rectified AC supply requires a smoothing circuit or filter. In its simplest form this can be just a reservoir capacitor or smoothing capacitor, placed at the DC output of the rectifier. There is still an AC ripple voltage component at the power supply frequency for a half-wave rectifier, twice that for full-wave, where the voltage is not completely smoothed. Electrolytic capacitors can evaporate through a temperature-dependent drying-out process, which causes electrical parameters to drift, limiting the service life time of the capacitors. High-amplitude ripple currents and temperature shorten the life of electrolytic capacitors.
Merit are just one day to green building transformation and individual day lighting dimming. Abso... more Merit are just one day to green building transformation and individual day lighting dimming. Absolute standby zero circuit topology are supports real moderate green building.
Simply put, the FIDES-Power topologies are AC-DC SMPS IC’s combination is creating a devastating... more Simply put, the FIDES-Power topologies are AC-DC SMPS IC’s combination is creating a devastating force are of modern AC to DC standby zero power.
High Voltage solid state Digital Capacitor IC
Reliability, availability, maintain free, and dura... more High Voltage solid state Digital Capacitor IC Reliability, availability, maintain free, and durability TECHNOLOGY PROVIDES TANGIBLE BENEFITS FOR over 100,000h life cycles. Now a day, AC to DC power converter such likes conventional fly-back technology SMPS are Power Factor (PFC) controllers and PFC/PWM combo controllers offer cost and energy saving solutions that address the demanding requirements of a diverse range of medium and high power Switch Mode Power Supply (SMPS) designs. But aluminum electrolytic capacitor makes decrease efficiency and life time failure.
This invention relates to a oscillation circuit suitable for high-frequency oscillation, and part... more This invention relates to a oscillation circuit suitable for high-frequency oscillation, and particularly to a high-frequency oscillation circuit having a feedback loop which can be used for a high frequency circuit of communication equipment and the like to improve a frequency and amplitude characteristics of the oscillation signals.
Active Valley Fill with additional PF Control Circuits for substitution of aluminum electrolytic ... more Active Valley Fill with additional PF Control Circuits for substitution of aluminum electrolytic capacitor.
NMOS Gate driver needs for high voltage bipolar driver circuits.
The NMOS gate needs more high th... more NMOS Gate driver needs for high voltage bipolar driver circuits. The NMOS gate needs more high then Drain voltage. Usual NMOS gate boot driver are difficult to start up.
Especially LED lighting markets are harsh reality of products reliability and sustainability with... more Especially LED lighting markets are harsh reality of products reliability and sustainability with flicker problems. While AC-DC LED driver half-wave and full-wave rectification can deliver unidirectional current, neither produces a constant voltage.Producing steady DC from a rectified AC supply requires a smoothing circuit or filter. In its simplest form this can be just a reservoir capacitor or smoothing capacitor, placed at the DC output of the rectifier. There is still an AC ripple voltage component at the power supply frequency for a half-wave rectifier, twice that for full-wave, where the voltage is not completely smoothed. Electrolytic capacitors can evaporate through a temperature-dependent drying-out process, which causes electrical parameters to drift, limiting the service life time of the capacitors. High-amplitude ripple currents and temperature shorten the life of electrolytic capacitors.
Merit are just one day to green building transformation and individual day lighting dimming. Abso... more Merit are just one day to green building transformation and individual day lighting dimming. Absolute standby zero circuit topology are supports real moderate green building.
Simply put, the FIDES-Power topologies are AC-DC SMPS IC’s combination is creating a devastating... more Simply put, the FIDES-Power topologies are AC-DC SMPS IC’s combination is creating a devastating force are of modern AC to DC standby zero power.
High Voltage solid state Digital Capacitor IC
Reliability, availability, maintain free, and dura... more High Voltage solid state Digital Capacitor IC Reliability, availability, maintain free, and durability TECHNOLOGY PROVIDES TANGIBLE BENEFITS FOR over 100,000h life cycles. Now a day, AC to DC power converter such likes conventional fly-back technology SMPS are Power Factor (PFC) controllers and PFC/PWM combo controllers offer cost and energy saving solutions that address the demanding requirements of a diverse range of medium and high power Switch Mode Power Supply (SMPS) designs. But aluminum electrolytic capacitor makes decrease efficiency and life time failure.
This invention relates to a oscillation circuit suitable for high-frequency oscillation, and part... more This invention relates to a oscillation circuit suitable for high-frequency oscillation, and particularly to a high-frequency oscillation circuit having a feedback loop which can be used for a high frequency circuit of communication equipment and the like to improve a frequency and amplitude characteristics of the oscillation signals.
Active Valley Fill with additional PF Control Circuits for substitution of aluminum electrolytic ... more Active Valley Fill with additional PF Control Circuits for substitution of aluminum electrolytic capacitor.
NMOS Gate driver needs for high voltage bipolar driver circuits.
The NMOS gate needs more high th... more NMOS Gate driver needs for high voltage bipolar driver circuits. The NMOS gate needs more high then Drain voltage. Usual NMOS gate boot driver are difficult to start up.
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Papers by Yeonmoon Jeong
Reliability, availability, maintain free, and durability TECHNOLOGY PROVIDES TANGIBLE BENEFITS FOR over 100,000h life cycles. Now a day, AC to DC power converter such likes conventional fly-back technology SMPS are Power Factor (PFC) controllers and PFC/PWM combo controllers offer cost and energy saving solutions that address the demanding requirements of a diverse range of medium and high power Switch Mode Power Supply (SMPS) designs. But aluminum electrolytic capacitor makes decrease efficiency and life time failure.
The NMOS gate needs more high then Drain voltage. Usual NMOS gate boot driver are difficult to start up.
Reliability, availability, maintain free, and durability TECHNOLOGY PROVIDES TANGIBLE BENEFITS FOR over 100,000h life cycles. Now a day, AC to DC power converter such likes conventional fly-back technology SMPS are Power Factor (PFC) controllers and PFC/PWM combo controllers offer cost and energy saving solutions that address the demanding requirements of a diverse range of medium and high power Switch Mode Power Supply (SMPS) designs. But aluminum electrolytic capacitor makes decrease efficiency and life time failure.
The NMOS gate needs more high then Drain voltage. Usual NMOS gate boot driver are difficult to start up.