ideas of delabs

Analog Design to Handheld Computing. Ergonomics and GUI Usability. 30+ years in Electronic Product Design. 80s EE Design Notes, 90s EE Web Logs. - delabs Technologies

Search This Blog

Thursday, August 01, 2019

The Success of the LED Lamp

The White LED Lamp is a Success today, more and more firms are manufacturing them. Millions are using it and is moving forward taking over the slots once occupied by CFL Lamps.

Still Filament and other Lamps are in use, even i like it much. CFL reliability and quality has improved. Then the LED Lighting has far too many Advantages and will be the Default Lighting Product of the future. It can easily adapt to the 24V Low voltage Standard, with Solar Energy Interface too.

The Insides of a LED Bulb

The Insides of a LED Bulb

The AC to DC converter can be designed in various ways. The SMPS, the CFL Lamp Driver and this Mains Bulb LED driver all belong to the same Electronic Species.



First the 230V/110V at 50Hz/60Hz mains voltage is converted to DC with a diode bridge and filter cap. Not to forget protection and EMI filter circuits made of passive components.

Then it is an Oscillator that switches at High-Frequency, chops the 200V or 300V DC, say around 200 KHz. Then this AC is Stepped-Down with a High-Frequency Ferrite Transformer. Rectify the AC and use it to drive lamps with the current limit controls. The reliability of power devices and the Isolation in the Small Ferrite Transformer determine the life and safety of the bulb.

White LED Lighting Lamps - 2011

We moved from Warm, Soothing and Healthy Edison Filament Lamps to CFL Lamps which are Energy Efficient, Bright but harsh on the Sensitive Eyes.

Energy Efficiency is of paramount importance for this age. Then, the light should be healthy for the eyes too. Eyes are very precious too.

That is the reason we need to Switch to LED lighting. It consumes low power, more reliable than CFL and gives Excellent and Safe Lighting.

LED lighting is expensive, as the Technology is slowly gaining acceptance. Please also bear in mind that low quality and unreliable LED products will also be in the market. In time, things will get seasoned and affordable quality products will be standard in all stores.

You can Contribute by trying them out and experimenting with its applications in home, office, vehicles and helper robots. Only those that design lamps that withstand Surges, Brown-outs, Lightning Strikes, Spikes will Shine just like the Lamp above



"Look i even got into an LED Lamp to emphasize the Importance of LED Lighting"


A Warm White LED is great Feng Shui for a Hobbyist's Desktop or Workshop. A DIY Table Lamp or a Lathe Lamp with these Warm LEDs create Positive Energy, for not just your Home but for the Entire Neighborhood. This idea, is in the form of riddles in Ancient Chinese Manuscripts, I hope the Yellow Emperor does not see this post.

Yellow Emperor - Known as an early inventor. He holds the patents for The South Pointing Chariot, Diadem, Football, Silks, Dyes and Grain Farming too. A Musical instrument called Guqin too!

- delabs design notes