System and method for electret surface potential restoration by a directional pulsating electric field

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United States of America Patent

PATENT NO 9842701
SERIAL NO

14337602

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Abstract

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A system is disclosed for restoring a surface field potential of an electret material. An oscillator generates an oscillating output, and a power amplifier amplifies the oscillating output. A step-up transformer generates a high voltage alternating current output from the amplified oscillating output, and a polarity controller generates one of a positive pulsating output and a negative pulsating output from the high voltage alternating current output.

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Patent Owner(s)

Patent OwnerAddress
ADC TECH INTERNATIONAL LTD30 SHING YIP STREET ROOM 405 4/F WINFUL CENTRE KWUN TONG KOWLOON

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheung, William S H London, GB 18 565

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