Disclosed are various embodiments of low cost high quality LED (
Light Emitting Diode) retrofit lamp devices capable of operating in a wide range of power and to supersede conventional lighting devices such as incandescent,
halogen,
sodium or fluorescent lamps. The disclosed embodiments include various
LED lamp retrofit apparatuses that maximize the electro-mechanical-optical compatibility of seven interactive systems, such as: LEDs, LED Panel, Supply Adaptor, Housing, Lens / diffuser Shield, In / Out
Electrical Wiring an
LED driver.
LED lamp retrofit apparatuses include incandescent,
halogen, fluorescent, and
sodium lamps. Drivers for such LED retrofit lamps include alone or in combination is
double stage boost—isolated flyback,
single stage boost, no opto-coupler isolated flyback,
single stage single ground flyback,
single stage constant
off time buck-boost, single stage single ground self-supply buck-boost, pseudo
double stage boost-isolated flyback, pseudo
double stage boost—non isolated flyback, pseudo double stage boost—COT buck-boost, pseudo double stage boost—SG buck-boost, series circuit monolithic, parallel circuit monolithic, single
cell anode loaded
voltage controlled limited
current switch (VCLCsw), single
cell cathode loaded
voltage controlled limited
current switch (VCLCsw), overall feedback series monolithic circuit, overall feedback parallel monolithic circuit, monolithic multi stripes, high reliability series monolithic circuit, minimum parts series monolithic circuit, minimum parts parallel monolithic circuit, 120 Vac series monolithic circuit, simplified series monolithic circuit, simplified parallel monolithic circuit, monolithic diodes source feedback parallel circuit,
operational amplifier (OPAM) monolithic parallel circuit, diodes gate feedback monolithic parallel circuit,
resistor gate feedback monolithic parallel circuit, according to one embodiment, totem pole feedback monolithic parallel circuit, monolithic 8 Pin DC
chip, and monolithic 8 Pin AC
chip.