1 Watt or Less Efficient Led Light Project

[SkyWatcher123]

Hi all, Been working on an led light project, trying to get the most useful room light from 1 watt or less.
I made led light fixtures for the project also, using poster board with a highly reflective silver on one side, from hobby lobby.

Also made a large coil/core for the oscillator, used 15 ferrite toroids stacked and glued together, then wound one layer of 30awg. magnet wire and on top of that, a layer of 24 awg. magnet wire.
And used similar oscillator circuit from the rene/aum experiments, will post actual circuit drawing soon.
Setup uses 960 milliwatts and provides fairly bright light in all areas needed, using six 40 watt equivalent modified led bulbs in parallel with light fixtures at the moment.
The light fixtures help reduce light spilling off into walls and angled ceiling, where light is not needed, as these walls are brown and does not help.
Using boost converter as input, 11.56 volts at 83 milliamps.
Using four 1n4004 diodes as bridge rectifier off the 30 awg. secondary coil to power the led bulbs.
The ferrite core itself, weighs 15.3 ounces.
Comments welcome.
peace love light

[erfandl]

thanks sky. is any schematic of your circuit ?

thanks

[SkyWatcher123]

Hi erfandl, yes, just finished it.
peace love light

[erfandl]

Hi erfandl, yes, just finished it.
peace love light

thanks sky. is 2 wire wrapped clockwise or counterclockwise ? ( first layer clockwise and second layer counterclockwise ? ) and whats the toroid size ?

thanks

[gyulasun]

Hi SkyWatcher,

It is a good idea to use the light fixtures to increase brightness for the needed areas. You may have thought of testing the actual position of a bulb within the fixture, I mean attaining a virtual focus point position when the most light is reflected back from the silver coatings and directed to the facing front of such lamp.

Regarding your circuit, we have discussed its lossy components in your other threads and how to reduce losses, no need to repeat them here, you know them.       The difference maybe that the operational frequency of this oscillator is lower than the earlier ones due to the higher number of turns and more ferrite core mass (i.e. primary coil inductance is higher).

Gyula