... from rest of the circuit,160 Sustainable Energy Harvesting Technologies – Past, Present and Future 2 Sustainable Energy Harvesting Technologies: Past, Present and Future μW. Indoor light intensity ... pp.251-259, 2008.168 Sustainable Energy Harvesting Technologies – Past, Present and Future 14 Sustainable Energy Harvesting Technologies: Past, Present and Future At 400 lux, the maximum power ... aqueous156 Sustainable Energy Harvesting Technologies – Past, Present and Future 12 Sustainable Energy Harvesting Technologies: Past, Present and Future Fig. 13. Voltage across PV panelFig. 14. Voltage...