I thought why not make the jig ...
The bulb fry myth has been busted , i was able to reach a steady glow
the SCR based sequencer works beautifully!
All 4 channels are active ... but SCR and bulb is on one channel
i will add 3 more SCR and bulbs .
testing with 4w PHILIPS bulb on 230V AC
I have been using SMPS LED lamps , they seem to respond well to few Khz frequency
all shops and places use squarelike inverters with higher switching freq. the bulbs are doing just fine.
(may reduce 1year life, but thats ok of the avg life is say 4 year , reducing to 3year is unnoticable)
However , i have delivered all inverters to poor and needy. I will make one 10watter
and check if its driving well .
But i appreciate the know how shared so far