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Sorry my typo mistake. I meant where can I get the HF EEI=2 Philip electronic ballast? I have seen a few other brand of electronic ballast and they either come in a very long form factor or square form factor (mostly china type). Long type not suitable be use on smaller 22W circular FL as the lamp housing is quite small.

Where can I find EEI=A3 electronic ballast? How much is one?

The ballast is use to regulated the current flow to the lamp. I did a test some time ago, using 36W ballast vs 18W ballast on a the same 22W lamp. The 22W lamp on 36W ballast is very much brighter. Therefore I believe that using 10W lamp on 13W ballast may not use less electricity than using 13W lamp on 13W ballast. If your objective is to save energy, you need to change the ballast, changing the lamp without changing the ballast will not save much. Use electronic ballast if possible.

Yes. There are fish aquarium user use PLL light with electronic ballast. Do a google search for it. Here is one. As long the florescent lamp have 4 pins it should be able to use electronic ballast. There basically 2 pair of connection (pins). 1 pair for one end of the connection. The connection diagram is on the ballast itself.

I got myself a meter similar to this product called Kill-a-watt http://the-gadgeteer.com/review/kill_a_wat..._monitor_review This device help me to measure the actual watts use. I have to wire my lights up using to a 3 pin plug to measure it.

After some findings, PLC downlight cannot be use with electronic balast. Most PLC light bulb have only 2 pins and the starter is builtin to the PLC bulb. There are 4 pin PLC bulb but there are rare and much more expensive that the normal 2 pin PLC light bulb. On top of that, the light holder need to have 4 wires connected to the 4 pins PLC light. So I decided to find light holder to horizontal screw type. The problem is most shop carried square downlight and not much round type nowdays. Some shop say it is not possible to have screw type in horizon layout. I managed to find one shop in Jln Besar that have a similar size (round) downlight as mine. The sales guy is willing to modified the PLC to screw in holder (E27). Tested it with one of these modified downlight and it is working for me. Now the plan is to change the rest of my magnetic balast with PLC downlights to the builin electronic balast E27 downlight.

I guess those screw in type downlight required quite alot of height in the false ceiling. My false celing is very shallow. My PLC type downlight the bulb is plugged in horizontally to save vertical space. I bought a philips electronic transformer (60Watts) to test it out. Using normal 50W 12V Halogen bulb 1. Using Optima 50W normal transformer, Power measured: 61Watts 2. Using Philips 60W electronic transformer, Power measured: 50.5 Watts Here is a pic of the Philip electronic transformer I found from one of the online hardware shop.

1)Thanks I will try to look for the electronic transformer at kelantan road. 2)Most downlight uses spring clip to hold the light in place. It should be easy to mount the light holder in to the false ceiling but the reverse to remove the light holder is very difficult. I looking for tips to remove the light holder.

Stumbled on this blog when i googled for the philips electronic ballast I found from a hardware store. Thanks for the information on this thread. I bought my ballast at $18 (expensive). Luckily i bought only one to tested it out. The rest I bought from the Choo Chiang Marketing at $9(as suggested in this blog), now I have completed all external FL lamp to electronic ballast. I have measured the power consumption with magnetic vs electronic ballast here is my result: Magnetek 18W Magnetic ballast with 20W circular FL lamp Watt measured : 30W Philips 18W Electronic ballast with 20W circular FL lamp Watts measured: 22W There is a energy saving from electromagnetic ballast vs electronic ballast. However make sure you use the correct size ballast. I try using Philip 37W electronic ballast on my 20W lamp it actually is brighter but used about 30W. Not sure if this combination will it affect the lamp life so I change back some of my 37W to 18W ballast. I have a few questions that I still looking for answer: 1) Are there electronic transformer for 12V Halogen light? 2) How to remove the Recessed light (downlight) to changed the ballast?