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user "null-points" *open source effort
Bonne année, overunity people!
Got to laugh at the complexity and/or 'scientific' foundation of recent flashlight/lantern offerings from points East
For all you frustrated replicators/hopeful customers, here's a little seasonal present to keep you amused while you wait for something/anything worthwhile to come of yet more fruitless effort, or waste of $100
So - this is my offering in the world of flashlights: use flyback energy to charge a second battery via LED(s)
Ok, nothing novel, there - except....
Here's a little demonstrator i put together this weekend - and as a 'starter for 10', it's not looking too shabby!
This example uses only 1 AAA 750mAh NiMH as an input 'battery', a similar cell as output, and a single Hi-brite white LED as the lamp - the same type of circuit arrangement could be used for additional cells and LEDs
The circuit is based on a flyback switchmode PSU arrangement (in this case, a Boost Converter), B2 gets charged with the same flyback current pulses illuminating LED1.
After operating the flashlight sufficiently to discharge B1, the switch S1 can be toggled to swap the i/p & o/p cells/batteries and the process repeats.
Obviously, this arrangement will extend the use of the flashlight, compared to the same initial charge supplied to a single cell without the recharge circuitry
If you wish to experiment with this configuration, you'll see that my circuit is pretty much generic - the transistors i've used have been either high-gain, low power, eg BC337, or medium power, eg BFY51. Transformer T1 needs sufficient turns ratio to swtch Q1 reliably, my T1 is a Maplin Ferrite Toroid, approx 30mm OD x 25mm high, using 0.45mm magnet wire. No pulse timing, this thing oscillates at the natural frequency of the assembled parts (approx 500kHz, in my case). Inductor L1 (approx 2.5mH here) may not be necessary, it's a legacy from other stuff i've been doing, C1 is helping to buffer the input supply, i use a 1500uF electrolytic. Diodes are Schottky, type BAT42,
I don't think any components are critical or unusual - i have introduced an air-gap into the toroid, mostly as a salute to the late Harold Aspden! ;-)
I'm hoping to attach the schematic and a sample datalog graph of the discharge/charging voltage trends - i was going to take a photo of my scrappy build, to give an idea of the LED intensity, but i just found (ironically) that both my batteries for my camera are discharged so that will have to wait. The LED is bright enough to block visual sight of the layout when viewed from approx half a metre above.
PS ...although the graph may LOOK as if the flashlight is already OU, with the charging cell voltage slope being steeper than the discharging cell slope, obviously further (and certainly more rigourous) testing would be required to establish the efficiency of the system
However - this system works - its cheap, simple ...and it's likely to be a whole lot more efficient than some of the offerings being touted as OU!
Enjoy :-)
np
doc ringwood's free-lunch free-energy blog
------------------------------------------------------------------------
being discussed here also
"...that's not a knife - THIS is a knife!!!" ...er, OU flashlight
user "null-points" *open source effort
Bonne année, overunity people!
Got to laugh at the complexity and/or 'scientific' foundation of recent flashlight/lantern offerings from points East
For all you frustrated replicators/hopeful customers, here's a little seasonal present to keep you amused while you wait for something/anything worthwhile to come of yet more fruitless effort, or waste of $100
So - this is my offering in the world of flashlights: use flyback energy to charge a second battery via LED(s)
Ok, nothing novel, there - except....
Here's a little demonstrator i put together this weekend - and as a 'starter for 10', it's not looking too shabby!
This example uses only 1 AAA 750mAh NiMH as an input 'battery', a similar cell as output, and a single Hi-brite white LED as the lamp - the same type of circuit arrangement could be used for additional cells and LEDs
The circuit is based on a flyback switchmode PSU arrangement (in this case, a Boost Converter), B2 gets charged with the same flyback current pulses illuminating LED1.
After operating the flashlight sufficiently to discharge B1, the switch S1 can be toggled to swap the i/p & o/p cells/batteries and the process repeats.
Obviously, this arrangement will extend the use of the flashlight, compared to the same initial charge supplied to a single cell without the recharge circuitry
If you wish to experiment with this configuration, you'll see that my circuit is pretty much generic - the transistors i've used have been either high-gain, low power, eg BC337, or medium power, eg BFY51. Transformer T1 needs sufficient turns ratio to swtch Q1 reliably, my T1 is a Maplin Ferrite Toroid, approx 30mm OD x 25mm high, using 0.45mm magnet wire. No pulse timing, this thing oscillates at the natural frequency of the assembled parts (approx 500kHz, in my case). Inductor L1 (approx 2.5mH here) may not be necessary, it's a legacy from other stuff i've been doing, C1 is helping to buffer the input supply, i use a 1500uF electrolytic. Diodes are Schottky, type BAT42,
I don't think any components are critical or unusual - i have introduced an air-gap into the toroid, mostly as a salute to the late Harold Aspden! ;-)
I'm hoping to attach the schematic and a sample datalog graph of the discharge/charging voltage trends - i was going to take a photo of my scrappy build, to give an idea of the LED intensity, but i just found (ironically) that both my batteries for my camera are discharged so that will have to wait. The LED is bright enough to block visual sight of the layout when viewed from approx half a metre above.
PS ...although the graph may LOOK as if the flashlight is already OU, with the charging cell voltage slope being steeper than the discharging cell slope, obviously further (and certainly more rigourous) testing would be required to establish the efficiency of the system
However - this system works - its cheap, simple ...and it's likely to be a whole lot more efficient than some of the offerings being touted as OU!
Enjoy :-)
np
doc ringwood's free-lunch free-energy blog
------------------------------------------------------------------------
being discussed here also
"...that's not a knife - THIS is a knife!!!" ...er, OU flashlight
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