Solid state LED bridge rectifier light engine
View Patent ↗A solid-state light engine comprised of light emitting diodes (LEDs) configured into a bridge rectifier with a current limiting module coupled to the LED bridge rectifier. The light engine may be packaged for high temperature operation. Optionally, the LEDs comprise wavelength-converting phosphors with a persistence that is a multiple of the peak to peak current period, to smooth and mask ripple frequency pulsation of emitted light.
1. A solid state light engine comprising:
a bridge rectifier having a rectified output, and
at least one light emitting diode (LED) connected to the bridge rectifier, the at least one LED including a die portion, a layer of phosphor free resin positioned upon the die portion, and a plurality of phosphor particles adhered to the layer of phosphor free resin;
a pair of AC power input terminals electrically connected to the input of the bridge rectifier for use in coupling the bridge rectifier to an AC power source; and
a pair of DC power input terminals connected to the rectified output of the bridge rectifier for use in coupling the bridge rectifier to a circuit productive of a DC voltage at the pair of DC power terminals.
2. The solid state light engine of claim 1 , wherein the bridge rectifier comprises four bridge legs, each bridge leg having at least two LEDs.
3. The solid state light engine module according to claim 1 , wherein the circuit comprises a DC power supply.
4. The solid state light engine module according to claim 1 , wherein the circuit comprises a current limiting module.
5. The solid state light engine module according to claim 1 , wherein the current limiting module is one of a resistive element, an inductor, a positive temperature coefficient varistor, a series combination of a negative temperature coefficient varistor and a capacitor, and a current regulation circuit having a peak limit.
6. A solid state light engine comprising: a bridge rectifier, including four bridge legs, each bridge leg having at least two LEDs, each of the at least two LEDs including a die portion, a layer of phosphor free resin positioned upon the die portion, and a plurality of phosphor particles adhered to the layer of phosphor free resin;
a pair of AC power input terminals electrically connected to the input of the bridge rectifier for use in coupling the bridge rectifier to an AC power source; and
a pair of DC power input terminals connected to the rectified output of the bridge rectifier for use in coupling the LED bridge rectifier to a circuit productive of a DC voltage at the pair of DC power terminals.
7. The solid state light engine of claim 6 , further comprising: one or more LEDs electrically connected to a rectified output of the bridge rectifier.
8. The solid state light engine according to claim 6 , wherein the circuit comprises a DC power supply.
9. The solid state light engine according to claim 6 , wherein the circuit comprises a current limiting module.
10. The solid state light engine according to claim 9 , wherein the current limiting module is one of a resistive element, an inductor, a positive temperature coefficient varistor, a series combination of a negative temperature coefficient varistor and a capacitor, and a current regulation circuit having a peak limit.