High frequency AC LED lighting system
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United States of America Patent
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Sep 26, 2017
Grant Date -
Jun 1, 2017
app pub date -
Nov 30, 2016
filing date -
Dec 1, 2015
priority date (Note) -
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Abstract
A circuit having a series interconnection of a light-emitting diode (LED) group, a first transistor, a second transistor and a first resistor. The series interconnection has a cathode coupled to a drain terminal of the first transistor and a source terminal of the first transistor is coupled to a first terminal of the first resistor wherein voltage across the first resistor to provide a biasing voltage for the first transistor. A source terminal of the second transistor is coupled to a first terminal of the first resistor wherein voltage across the second resistor provides a biasing voltage for the second transistor and ancillary circuitry bypasses the series interconnection. The ancillary circuitry has a capacitor to provide current to the series interconnection to increase the amount of light emitted during an electrical excitation cycle.
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