US Patent No. 10,251,228

LED DIMMING STABILIZER APPARATUS AND METHOD


Patent No. 10,251,228
Issue Date April 02, 2019
Title Led Dimming Stabilizer Apparatus And Method
Inventorship Marshall Lester, Northridge, CA (US)

Claim of US Patent No. 10,251,228

1. A load control system comprising:a. an electrical system with a AC line supply and a AC neutral supply, and
b. a dimmer having an input connection to said AC line supply and a dimmer load output connection, and
c. one or more LED lights each having a first connection to said dimmer load output connection and a second connection to said AC neutral supply, and
d. a dimming stabilizing device with a connection to said dimmer load output connection and a connection to said AC neutral supply, and
e. said dimming stabilizing device incorporating an electrical control circuit, and
f. said electrical control circuit including one or more switch devices in series with one or more resistive loads,
g. said electrical control circuit capable of connecting and disconnecting said one or more resistive loads repetitively to said dimmer load output connection and said AC neutral supply for one or more predetermined time periods that are each a fraction of the nominal total AC cycle time, and
h. The said fraction of the nominal AC cycle time determined by when average output voltage level on said dimmer load output connection is set below a predetermined average voltage level,
whereby said dimming stabilizing device effectively inserts said resistive loads in parallel with the said LED lights at parts of the AC waveform where the insertion is most effective to enable said dimmer output circuits produce a correct dimming waveforms that enable the electronic circuits in LED drivers operate and dim correctly.