Inside a new Philips ultra-efficient LED lamp (with schematic) - YouTube
Philips 4W E27 Ultra Efficient LED Light Bulb (60W)
PHILIPS 4W 350LM E27 P45 GLS LED MINI BULB 3000K PHILIPS LIGHTING PHILIPS BULB Kuala Lumpur (KL), Selangor, Malaysia Supplier, Supply, Supplies, Distributor | JLL Electrical Sdn Bhd