Boost Converter LED Driver
Self Oscillating technique is used for a 9V battery powered, PWM dimmable boost converter for LED driving at 96% efficiency and 2.3% current ripple.
PMS for TENG
Buck derived Power Management System (PMS) for Contact Separation Mode Triboelectric Nanogenerator (TENG) with 74% overall efficiency.
Microphone Preamplifier
Electret condenser microphone preamplifier design at 1% cost of a professional microphone for Wind Turbine Health Monitoring.
12kW Multiphase Converter
96.5% efficient buck-based converter with 28.3V output, current foldback and 1% active current sharing for aerospace applications.
Display Controller
F280025 controller display for pool pump application. Tactile switches later replaced with membrane buttons and RTC added for scheduling.
Water Pump Controller
Low noise, 97% efficient, 3hp water pump controller for Permanent Magnet Synchronous Motor for industrial, spa and pool applications.
Power Factor Correction
207-253VAC Single phase active power factor correction using off the shelf PWM controller for boost converter. Bus voltage is 400VDC and pf is 0.995.
CE and TUV Certification
Conducted and Radiated Emissions, Conducted and Radiated immunity, EFT, ESD, Surge, Voltage dip/interruptions, Harmonics, Flicker, Magnetic Immunity.
Water Pump Pulsing Mode
Sinusoidal Mode control for water pump. The technique finds use in massage therapy. The pulsing frequency can be configured to specification.
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