After extensive tests of the TKLABS V1.4 setup (see first diagram) in which i used severall E-core and pot-core transformers with different inductance's (600mH/100mH, then 57mH/26mH and finally 5.7mH/2.6mH) in all possible hookup configurations, i finished with this testing because never any sign of extended run times, after removing the supply voltage, was seen.
Severall screenshots and video's can be found on this thread on overunity.com showing the results:
http://www.overunity.com/14524/3v-ou-flashlight/msg401832/#msg401832I now modified the circuit to the so called Vadic Guk circuit (see 2th diagram) which does seem to have a more logical reason for the used transistor/MOSFET as mentioned by ION above (see picture 3).
There are some minor differences as i used the components when possible from the old circuit like R0, R1 and R2 (Valik diagram) are still 0.33 ohm, 3.3K and 180 ohm.
The transformer used presently is a pot-core 4.7cm diam. Al 9500, and W1 is 35mH, W2 70mH (when clamped together tightly).
I have i copper tape strip first on the former (gap 2mm) then W2, a layer electrical isolation tape, then W1 (the same direction as W2) and finally a copper tape strip shielding all this (gap 2mm).
First runs show i am missing my trigger point which was the blue trace on the first diagram, so i use now pins 4/5 of the 4069 to trigger on.
The leds (both show different behaviour) stay on longer after removing the supply voltage as they did on the old diagram, but after a few seconds they fade.
The MOSFET/transistor drain/collector signals are much more noisy now due to the inductance it is now switching.
I will have to try again all sorts of possible combinations for hooking up the transformer and tuning all parameters.
A short video of the running thing is here:
https://www.youtube.com/watch?v=DiPQuVYxJB4&feature=youtu.beRegards Itsu
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Topic: Akula 3 Volt Flashlight (Read 10999 times)
