Oscillator Powering 6 Modified Led bulbs

[SkyWatcher123]

Hi Naija, i chose the 5.5 watt- 40 watt equivalent led bulbs, to get a better intensity or brightness from the bulbs.
For your 220 volt bulbs, you might need to use more turns, maybe an extra coil layer, maybe not, experiment will tell you this.
It may be that the 220 volt led bulbs, could give more efficiency with this type of setup, i don't have any 220 volt versions on hand, so i don't know.
This i can tell you, the multiple led bulb in parallel approach, run off this type of circuit, is more than just spreading the light around.
The radiant spikes from the oscillator are being converted very efficiently by the buffer capacitor and whatever passes by that and into the multiple bulbs, to give far more lumens than one would expect for the wattage input.
Are we getting benefit from placing multiple bulbs spaced apart, of course, but that is not the whole story, just part of it.
peace love light

[Naija]

Hi Naija, i chose the 5.5 watt- 40 watt equivalent led bulbs, to get a better intensity or brightness from the bulbs.
For your 220 volt bulbs, you might need to use more turns, maybe an extra coil layer, maybe not, experiment will tell you this.
It may be that the 220 volt led bulbs, could give more efficiency with this type of setup, i don't have any 220 volt versions on hand, so i don't know.
This i can tell you, the multiple led bulb in parallel approach, run off this type of circuit, is more than just spreading the light around.
The radiant spikes from the oscillator are being converted very efficiently by the buffer capacitor and whatever passes by that and into the multiple bulbs, to give far more lumens than one would expect for the wattage input.
Are we getting benefit from placing multiple bulbs spaced apart, of course, but that is not the whole story, just part of it.
peace love light

Thank you Skywatcher for your answers and please one final one (hopefully), if I were to use 8 identical bulbs, there won't be need for an incorporated second circuit right? Which means only one transistor is required. If this were so, then which of the two transistors in your circuit should I use, the NPN or PNP?

[Naija]

Hello Skywatcher, in your older circuit, you were using TIP3055 with only one neon bulb. Would you recommend me using the same transistor for the 8 identical bulbs in parallel?

[gyulasun]

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Here is the circuit drawing and a pic, just to give an idea.
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Hi SkyWatcher,

I just noticed a drawing error in your circuit schematic: you mixed up the emitter and collector pins of the PNP transistor.
I have corrected the drawing, see it attached below.

Gyula

[gyulasun]

Thank you Skywatcher for your answers and please one final one (hopefully), if I were to use 8 identical bulbs, there won't be need for an incorporated second circuit right? Which means only one transistor is required. If this were so, then which of the two transistors in your circuit should I use, the NPN or PNP?

Hi Naija,

Skywatcher will surely answer you,  let me give just a general piece of advice on transistor types:  basically what you would need is a high voltage rated fast switching transistor.  Such types are mainly NPN ones, preferably have low collector-emitter saturation voltage, V_CEsat  and a relatively high h_FE  Dc current gain, known also a Beta, Ic/Ib. 
These types are developed for switching mode power supplies or for electronic lamp ballast circuits.  If you cannot buy such types at your location, you may scavenge some from discarded PC power supplies, or 120V and 230V fluorescent light bulbs etc.

Here are some types, though you can surely find other types too, now that you know what to search.

Fairchild (now Onsemi) type FJP5554, see at Digikey, Farnel, RS Components, Mouser:

https://www.digikey.com/product-detail/en/fairchild-on-semiconductor/FJP5554TU/FJP5554TU-ND/1473889
400V 4A 70W, h_FE is between 20 to 100, saturation voltage is max 0.5V at Ic=1A.

ST Microelectronics type BUL742C,  see at Mouser and Farnell,
http://eu.mouser.com/_/?Keyword=BUL742C   
400V, 4A, 30 or 70W, h_FE is between 25 and 100, saturation voltage is typical 0.15V at Ic=1A.

Gyula