Hey guys, thank god for this site, feel like I haven't slept in 2 days trying to answer this problem via google, no joy, but I know you guys will have the answer. I'm not too bad at electronics, soldered together a nixie clock or two, a jacobs ladder, can get my head around a 555 timer, can solder without killing a transistor, but always have to look up which end is the collector and which is the base
My project is this: I want the smallest possible 110VAC power supply, best specs would be:
Input: 1.0V - 14V DC (Maximum flexibility of NiMh / LiIon / Car12V)
Output: 100V - 240V AC @ 40ma (5-10W) @ Any Hz (highest efficiency)
Size: Smaller than 1" x 1" x 0.5" (2cm x 2cm x 2cm would be fine also?)
Efficiency: >90%
I would accept:
Input 2.5V - 4.2V DC (Lithium primary or LiIon)
Output: 110VAC @ 40ma (5W)
Size: 2" x 2" x 1" (5cm x 5cm x 2.5cm")
Efficiency: >50%
The purpose of this circuit would be many and varied (I have lots of nixie / neon / HV projects to drive from small batteries), but this specific project I'd be looking to make 10 tiny bases for some 1970s neon bulbs, to make them look as if they were lit by nothing (5W each).
I've disassembled some disposable cameras and tried those, but any more than 2V and they seem to overheat, and the wattage seems to be 0.5W max for the poor transistor before he lets out his magic smoke. But I have plenty of those little transformers/transistors (anyone know what the max wattage for those transformers is?). I would LOVE if someone had invented a transformerless IC I could use, even if it needed an external inductor.
Thanks guys!
My project is this: I want the smallest possible 110VAC power supply, best specs would be:
Input: 1.0V - 14V DC (Maximum flexibility of NiMh / LiIon / Car12V)
Output: 100V - 240V AC @ 40ma (5-10W) @ Any Hz (highest efficiency)
Size: Smaller than 1" x 1" x 0.5" (2cm x 2cm x 2cm would be fine also?)
Efficiency: >90%
I would accept:
Input 2.5V - 4.2V DC (Lithium primary or LiIon)
Output: 110VAC @ 40ma (5W)
Size: 2" x 2" x 1" (5cm x 5cm x 2.5cm")
Efficiency: >50%
The purpose of this circuit would be many and varied (I have lots of nixie / neon / HV projects to drive from small batteries), but this specific project I'd be looking to make 10 tiny bases for some 1970s neon bulbs, to make them look as if they were lit by nothing (5W each).
I've disassembled some disposable cameras and tried those, but any more than 2V and they seem to overheat, and the wattage seems to be 0.5W max for the poor transistor before he lets out his magic smoke. But I have plenty of those little transformers/transistors (anyone know what the max wattage for those transformers is?). I would LOVE if someone had invented a transformerless IC I could use, even if it needed an external inductor.
Thanks guys!