Inventor · disambiguated record
Chik Wai (David) Ng
Also filed as: NG CHIK WAI · NG CHIK WAI (DAVID)
17 granted patents·109 citations·filing 2007–2022
93Inventor score
Files withHK APPLIED SCIENCE & TECH RES8HIGH TECH TECH LIMITED4KWONG KWOK KUEN DAVID2LEUNG CHI TAK GERRY1NG CHIK WAI DAVID1
Top patents by PatentIndex Score
17 records- 0190US11206014B1Digital frequency dithering for switched-mode power supplies (SMPS) using triangular, asymmetric cubic, or random cubic spread spectrum oscillatorsHIGH TECH TECH LIMITED·Filed 2021·Granted Dec 21, 2021·6 cites·20 claims
- 0288US8780590B2Output current estimation for an isolated flyback converter with variable switching frequency control and duty cycle adjustment for both PWM and PFM modesSO WAI KIT VICTOR·Filed 2012·Granted Jul 15, 2014·22 cites·20 claims
- 0385US8300431B2Constant-current control module using inverter filter multiplier for off-line current-mode primary-side sense isolated flyback converterNG CHIK WAI DAVID·Filed 2010·Granted Oct 30, 2012·14 cites·20 claims
- 0484US7705662B2Low voltage high-output-driving CMOS voltage reference with temperature compensationHK APPLIED SCIENCE & TECH RES·Filed 2008·Granted Apr 27, 2010·16 cites·17 claims
- 0583US7538597B2Fuse cell and method for programming the sameHK APPLIED SCIENCE & TECH RES·Filed 2007·Granted May 26, 2009·7 cites·19 claims
- 0677US11258364B2Flexible array of DC-DC converters reconfigurable using a shared serial busHIGH TECH TECH LIMITED·Filed 2020·Granted Feb 22, 2022·2 cites·20 claims
- 0775US8072721B2ESD protection using a capacitivly-coupled clamp for protecting low-voltage core transistors from high-voltage outputsKWONG KWOK KUEN DAVID·Filed 2009·Granted Dec 6, 2011·7 cites·18 claims
- 0875US7705685B2Low-voltage oscillator with capacitor-ratio selectable duty cycleHK APPLIED SCIENCE & TECH RES·Filed 2007·Granted Apr 27, 2010·8 cites·20 claims
- 0973US9306461B2LED driver with small output ripple without requiring a high-voltage primary-side electrolytic capacitorHK APPLIED SCIENCE & TECH RES·Filed 2014·Granted Apr 5, 2016·4 cites·20 claims
- 1073US8188798B1Programmable electro-magnetic-interference (EMI) reduction with enhanced noise immunity and process toleranceLEUNG CHI TAK GERRY·Filed 2010·Granted May 29, 2012·7 cites·20 claims
- 1172US9385542B2Serial multi-battery charger with independent simultaneous charge and dischargeHK APPLIED SCIENCE & TECH RES·Filed 2014·Granted Jul 5, 2016·7 cites·12 claims
- 1270US7948224B2Feedback controller having multiple feedback pathsHK APPLIED SCIENCE & TECH RES·Filed 2007·Granted May 24, 2011·6 cites·18 claims
- 1359US8643337B2Single-power-transistor battery-charging circuit using voltage-boosted clockKWONG KWOK KUEN DAVID·Filed 2011·Granted Feb 4, 2014·1 cites·11 claims
- 1453US7999512B2Single-power-transistor battery-charging circuit using voltage-boosted clockHK APPLIED SCIENCE & TECH RES·Filed 2008·Granted Aug 16, 2011·1 cites·17 claims
- 1545US11990422B2Ferrite electro-magnetic interference (EMI) shield between an integrated-circuit (IC) chip and an air-core inductor all inside a hybrid lead-frame packageHIGH TECH TECH LIMITED·Filed 2022·Granted May 21, 2024·0 cites·20 claims
- 1645US7795976B2Slew-rate-enhanced error amp with adaptive transconductance and single dominant pole shared by main and auxiliary ampsHK APPLIED SCIENCE & TECH RES·Filed 2008·Granted Sep 14, 2010·1 cites·19 claims
- 1743US12347789B2Air-core transformer package with ferrite electro-magnetic interference (EMI) shielding of integrated-circuit (IC) chipHIGH TECH TECH LIMITED·Filed 2022·Granted Jul 1, 2025·0 cites·11 claims
Join the waitlist — get patent alerts
Get an alert when Chik Wai (David) Ng files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →