US Patent No. 10,398,004

LED FLUORESCENT LAMP EMULATOR CIRCUITRY


Patent No. 10,398,004
Issue Date August 27, 2019
Title Led Fluorescent Lamp Emulator Circuitry
Inventorship Xiaoxiang Cheng, Shanghai (CN)
Assignee ELB ELECTRONICS, INC., Arcadia, CA (US)

Claim of US Patent No. 10,398,004

1. A solid-state lighting arrangement for use in assuring safe operation of a lighting fixture having ballast circuitry capable of powering at least one gas discharge lamp when used with a solid-state light source, the arrangement comprising:a first input adapted for coupling to a first lamp connection within the lighting fixture;
a second input adapted for coupling to a second lamp connection within the lighting fixture;
a third input adapted for coupling to a third lamp connection within the lighting fixture;
a fourth input adapted for coupling to a fourth lamp connection within the lighting fixture;
a solid-state light source operably coupled to the first, second, third and fourth lamp connections;
wherein the first and second inputs directly couple to a first end of the solid-state light source and the third and fourth inputs directly couple to a second end of the solid-state light source;
AC switching circuitry, operably coupled to the inputs;
said AC switching circuitry comprising a first thyrister operably coupled via a first control circuit to the first or second inputs and a second thyrister operably coupled via a second control circuit to the third or fourth inputs; and
wherein the first thyrister is directly electrically connected, without intervening components, to the second thyrister.