Bedini Solid State Oscillators

[sucahyo]

But the issue here is that I am getting only 28-35 volt at the output side. Also when I have connected the wire to negative terminal of charging battery and shorted the positive wire to positive terminal of charging battery then there was no spark observed.

Checked the H11D1, SCR and 2N3584 and every thing seems working. REQUESTING MEMBERS TO GIVE SOME IDEA TO MOVE FURTHER ON THIS.

I think you should try using circuit that let you control duty cycle too. Try 555 circuit posted by Inquorate or use dave lawton one. joule thief or SSG have 50% duty cycle and may limit the possibilities.

[pvar06]

Increased current

Hi All,

Today first I have tested KSE13009 on the circuit but could not see any improvement in terms of input power and output voltage.

Then I have replaced the 2k and 18k with 4.7k and 22k Pot.

So when i reduce the resistance at 2k or 18k the current draw at the circuit get increased. It goes up to 1 Amps at input.

As mentioned earlier, I had installed 100k pot in place of 51k [as suggested by vtech]. So when i was fine tuning the 100k pot then the current draw was further increasing. On keeping the 100k at lowet value i.e. 0 ohms then the current draw at input gone upto 2 Amps.

On checking the neo magnet on the coil, it is giving some hammer sound. The vibration is so soild that by keeing the magnet loosly between two finger on the coil then the magnet is vibrating.

But the issue here is that I am getting only 28-35 volt at the output side. Also when I have connected the wire to negative terminal of charging battery and shorted the positive wire to positive terminal of charging battery then there was no spark observed.

Checked the H11D1, SCR and 2N3584 and every thing seems working. REQUESTING MEMBERS TO GIVE SOME IDEA TO MOVE FURTHER ON THIS.

Any ways I kept the battery for charging in this condition let me see what happens.

Regards

Praveen

[pvar06]

My SS Oscillator has been working pretty well with a KSE13009 transistor. I got two from a pc power supply.

PJ

Hi Sigzidfit,

Thanks for inputs.

Yesterday i could locate a old computer power supply and got 2 Nos KSE13007. On checking the datasheet, I found that KSE13009 and 13007 are having more or less same properties. So I have tested the same on the circuit by replacing BD243C. But could not notice any much improvement in terms of input current and output current / voltage.

Today planning to source the MJL21194 and KSE13009 for checking on the circuit.

On checking the application note of BD243C or similar high power transistors, I have noticed that the base resistor is the main key for the current draw. The current draw can be increased / decreased by changing the base resistor value. In page46 circuit of FEG, the base resistor 2k and 18k are the main key. So planning to replace with the 5k and 20k pot to have manual control.

I think for quick charging it is all necessary to have around 1-2 Amps input current and 220-300 volts with 0.2-0.3 Amps output.

Will post the progress on the group.

Regards

Praveen

[pvar06]

220mfd are still quite small capacitors... what voltage are you charging them to before discharge?

Hi Seph,

The voltage at the capacitor is observed at around 170-200 volts without load. As soon as I connect the charging bettery then the voltage get dropped to around 1-2 volts above the battery voltage.

Mostly today I will source the capacitors having 5000 mfd or above then will test the same.

Regards

Praveen

[sigzidfit]

Yes, it discharges directly from bridge and caps. I have no SCR.

PJ

[blackchisel97]

Goldfish memory

Thanks Seph Is this a result of fluoridation in early age

[Sephiroth]

One more thing; I just found my notes from earlier experiments and could measure only 13.7V on 2500uF cap, before discharging to the battery. With my current set up - 3.3uF cap, I can get up to 70V measured on the cap, with battery connected. I have set on 37V at the moment. I remember reading somewhere, that cap should be discharged with only couple volts above nominal battery V.


Vtech

http://www.energeticforum.com/renewable-energy/366-bedini-solid-state-oscillators-12.html#post69701

[blackchisel97]

cap

One more thing; I just found my notes from earlier experiments and could measure only 13.7V on 2500uF cap, before discharging to the battery. With my current set up - 3.3uF cap, I can get up to 70V measured on the cap, with battery connected. I have set on 37V at the moment. I remember reading somewhere, that cap should be discharged with only couple volts above nominal battery V.


Vtech

[blackchisel97]

Thank you for comment sigzidfit.
Yes, that's exactly the same circuit we're talking about, except there is no 555 oscillator. Do you discharge directly from bridge and caps, without SCR part?
I know you can pulse neon to the gate of SCR and further discharge to the battery. Never tried this, went straight to 555 version.

@ Praveen - When i had connected the output to battery terminal then the input current has been dropped to 0.3 Amps.' - Circuit draws more due to the lack of load. When battery is connected to the output circuit becomes balanced, since there is RLC load matching the circuit, thus drop in the input current draw. At least that's the way I understand.
I tried different transistors before and each delivered different results such as input draw and output parameters.


Vtech

[sigzidfit]

Hi sigzidfit, Could you share what is your input/output current? Is your circuit built according to the schematic from FEG book?


V

The basic circuit is like this: http://www.energeticforum.com/attach...sc-circuit.gif

The coil is tri-filiar. Only 200 turns. The core is from pieces of steel wire.

The third coil output goes through a bridge rectifier and a couple of caps.

Input has been 50 to 100 milli-amps depending on resistance used. Haven't measured output current. With out a load I'm afraid it would blow the caps. It charges better than the SG did and it will drive an electrolizer, a motor, a coil and cfl or a tone in a speaker, pretty much everything I've tried.

PJ

[Sephiroth]

Hi Seph,

Thanks for your inputs.

In the recent trail, I have tried the high farad capcitor too. I have replaced 4.7 mfd 450 volts with three 220 mfd 450 volts [connected in parallel] but could not see much improvement.

Regards

Praveen

220mfd are still quite small capacitors... what voltage are you charging them to before discharge?

[blackchisel97]

My SS Oscillator has been working pretty well with a KSE13009 transistor. I got two from a pc power supply.

PJ

Hi sigzidfit, Could you share what is your input/output current? Is your circuit built according to the schematic from FEG book?


V

[sigzidfit]

Tranny

My SS Oscillator has been working pretty well with a KSE13009 transistor. I got two from a pc power supply.

PJ

[pvar06]

Hi Vtech,

So far my hopes are alive and for the same reason it is 0630 in morning now.

Any ways, I have checked the circuit again with various BD243C, 2N6509, coils, capacitors. None of the changes could give me desired results. Recently I have observed following

'When the output is open [not connected to charging battery] then the circuit was drawing around 1 amps and at output side it was around 0.2 Amps with 160 volts. When i had connected the output to battery terminal then the input current has been dropped to 0.3 Amps.'

WHAT COULD BE THE REASON FOR THE SAME.....

Now i am thinking to rewind the coil again. May be will use more turns [i.e. above 450 turns]. What is your opinion on this.....

Any ways my bed is calling me.... till such time have a nice time. Look forward for your opinion.

Regards

Praveen

[pvar06]

High Farad cap

Hi Seph,

Thanks for your inputs.

In the recent trail, I have tried the high farad capcitor too. I have replaced 4.7 mfd 450 volts with three 220 mfd 450 volts [connected in parallel] but could not see much improvement.

Regards

Praveen