Patent ID: 9402285
Filing Date: 2016-07-26
CPC Classification: H05B

Claim Text:
1. An indoor photovoltaic flasher comprising a photovoltaic panel to collect ambient indoor light and convert the light into energy; a first capacitor to store the energy as voltage from said photovoltaic panel; a light emitting diodes display; a MOSFET wherein current flows from said first capacitor through said MOSFET to said light emitting diodes display, said MOSFET being an on/off switch for engaging or disengaging current flow from said first capacitor to said light emitting diodes display; a voltage divider and a first integrated circuit to control said first MOSFET; wherein said voltage divider scales down the voltage from said first capacitor; said first integrated circuit compares said scaled down voltage stored in said first capacitor versus a reference threshold voltage; and said first integrated circuit determines whether there is sufficient voltage in said first capacitor to power said light emitting diodes display, and wherein said first integrated circuit is an Under-Voltage Supervisory Circuit having a semi-conducting diode structure to provide said reference threshold voltage and a hysteretic analog comparator to compare said scaled down voltage stored in said first capacitor versus said reference threshold voltage.