3v OU Flashlight

[avalon]

who knows the 510 might be a 510nf instead 

It can't be. The circuit is just a standard step-up converter. Att 3.3v 25 deg C, Pin7 - 3.3v and Pin5 - Gnd, 510nf would represent about 300 ms switching time. That's in the region of 3 Hz.
Incidentally, 510pf should make between 32 kHz to 40 khz depending on some other factors.

~A

[avalon]

In this new video Akula analyzes Vadik's 3V Flashlight, which is the subject of this thread.
Akula uses his signal generator instead of the  к561лн2 CMOS Hex inverter to generate the low frequency pulsing of the outer winding (19.3Hz)
The yellow channel of his oscilloscope shows the signal at pin 1 of the MC34063 and the blue channel shows the signal at the collector of Q1 (non-decaying 290kHz oscillations).

He explains the cause of Vadik's inability to light 2 LEDs with his circuit (he blames it on the power consumption of the CMOS chip and on parallel LED connection).

Oh, the prophet has spoken...
As usual, his speech was full of cryptic messages and zero usefulness.
Also, I've got a feeling that he could not replicate the circuit in a self-sustained mode. Hence - his video is full of nonsense blabbing.

~A

[magpwr]

It can't be. The circuit is just a standard step-up converter. Att 3.3v 25 deg C, Pin7 - 3.3v and Pin5 - Gnd, 510nf would represent about 300 ms switching time. That's in the region of 3 Hz.
Incidentally, 510pf should make between 32 kHz to 40 khz depending on some other factors.

~A

hi avalon,

I did not construct circuit yet.I merely inject 9khz signal to transistor C1815 on breadboard which is connected to my untested winding.
The objective was merely to find out the  bemf or ideal bemf i would be getting from the winding with the 2 copper shield(gapped).

The 61 turns is 470uH as measured on my L/C meter.This isn't the right core i think since it's smaller.

From here i may able to know if the bemf is able to sustain circuit.

As i mentioned previously 120volts maximum i have got on 9khz at 10% duty cycle for my case,current drawn mere 2mA on 3.4volt AA Li-ion battery.

Power input base on 3.4v x 2mA = 0.0068watt.

Power output needs to be measured later on .It's Sunday morning over here as i am typing this.

From here i might able to tell if there is ou effect.Result will be posted later <2hours.

It's only the output current which i have not measured yet.I will just use 1Kohms 1% resistor to know the current in mA.

If you guys simply replicate without knowing how it actually works may spell disaster if it fails and if we don't know on how to debug and solve.

"It's my way of optimizing time while waiting for components"


---------------------------------------------
Latest result on power input to power output efficiency related to Bemf on 61 turns winding.
Merely used 1 diode 1N5819 connected to collector and negative.Output of diode is connected to 5uf capacitor which is also connected to negative.

Input -   0.0066Amp X 3.4V =0.020watt

Output-   4.21v x 0.00421Amp =0.0177watt             (With 1k 1% resistor as load)

Power in/out Efficiency max:88.5% after changing frequency close to original 9khz under 1k load.

---------------------------
I have not tried mixing 2 different frequency yet.Honestly l'm little lost now...

[magpwr]

Warning: If my M.O. of this circuit is correct then you should not use acoustically dampening materials such as a vinyl or Teflon tape on the core.
The ideal insulating spacer separating the core is mica (because it does not dampen ultrasonic core vibrations).  Paper is worse than mica but not as bad as vinyl tape.

hi verpies,

I agree with you on   "dampen ultrasonic core vibrations" part.
My focus during winding was merely on electrical isolation <50volts using common vinyl tape.

[magpwr]

Hi MenoFather,

I just spotted this latest video from Artur Shahinyan (The person whom attempted replication using exact same ferrite core)whom just uploaded 2nd video few hours ago.

Фонарик 02
http://www.youtube.com/watch?v=izqV7lAPhMU

Kindly tell us what was his findings base on what looks like a  Back Emf signal shown on oscilloscope without using 8 pin i/c in socket.Thanks.

For everyone fyi- "Oscilloscope probe is connected to transistor collector and negative for measurement base on video"

I noticed he did not insulate the copper wires(at both opening of ferrite) from touching the ferrite core which may hinder output.Please do advise him.

Just notice this time he did use cut paper in circle in the center to prevent 2 ferrite half from touching each other."This is recommended"