Patent ID: 8274229
Filing Date: 2012-09-25
Classification: H05B

Abstract:
1. A reverse polarity series type LED and drive circuit formed by two sets of LED and diode assemblies in reverse polarity series connection wherein a first set consists of at least one or multiple homopolar series or parallel connected or series and parallel connected LEDs, and a second set consists of at least one or more homopolar parallel or series connected or series and parallel connected LEDs for further connection to the drive circuit formed by current-limiting impedance and/or power storage and discharging devices and/or voltage-limit circuit devices in order to produce required operational characteristics, comprising: a LED ( a LED ( diodes ( by means of parallel connection between the LED ( by means of a reverse polarity series connection between the first LED and diode assembly with the second LED and diode assembly, a reverse polarity series type LED device is formed; an independent connection terminal of the first LED and diode assembly being designated as the (a) terminal, the reverse polarity series connection terminal between the first and the second LED and diode assemblies being designated as the (b) terminal, and an independent connection terminal of the second LED and diode assembly being designated as the (c) terminal, and wherein: alternating current power is delivered from the (a) and (c) terminals of the reverse polarity series type LED, the reverse polarity series type LED device serves to perform the functions of the alternating current LED, a current-limiting impedance element ( by means of the operation of the power storing and discharging device, the following partial or complete functions are attained: 1) two LEDs deliver power and emit light without being affected by the polarity changes of the alternating current power source; 2) when alternating current power is driving the LED, optical pulsation of the LED is reduced; 3) the power storing and discharging devices supply electric energy to the LEDs when power is cut off; and 4) the power storing and discharging devices allow continuous lighting of LEDs during an emergency power shutdown, and the power storing and discharging device consists of a rechargeable battery or a monopolar or bipolar capacitance or super capacitance.