Bedini Solid State Oscillators

[pvar06]

Hi Vtech,

Thanks for your reply.

Further moved ahead and put the circuit on my power supply with 19.7 volts. Unfortunately there was no improvement in the input and output current as well as on the output voltage. In anticipation of some result kept the battery for charging on 19.7 volts but no significant improvement is observed on the battery.

So far i have made around 6-7 such circuits but only one had delivered the result to me. Unfortunately I had burned out some of the part while I was trying to hook it on power supply. This circuit was taking 1-1.2 amps at input and 0.2 amps with 220 volts at output. The vibration with neo magnet was observed at around 3-4 inch distance.

Some how I could preserve the BD243C of that successful circuit. But when i have installed this on the current circuit then the output voltage is getting dropped drastically.

To my mind it is all necessary to have good input current [between 1-2 amps] and output should be around 0.2-0.3 amps with 260-280 volts. I dont know how to increase the current draw by the circuit because I feel if we can increase the current draw at input and can maintain the output with 0.2-0.3 amps with over 250 volts then it can give good charging. The same i have read somewhere and it was going like this

'For getting a good charging the circuit should take around 2 Amps. For doing so you can increase the input voltage'

Also read at one of the post where one member has got around 0.62 Amps with 200 volts at output and his circuit was performing pretty well.

BUT DONT KNOW HOW TO INCREASE THE CURRENT DRAW.

I know Ash has a successful device with him and sent the pictures to him too. He only advised me to operate the circuit on around 24 volts. Dont know about Aaron.

Regards

Praveen

[pvar06]

Donkt know where is the problem

Hi Vtech,

Further to the previous post, I wish to inform you that I have checked the circuit with the higher farad capacitor too. Replaced 4.7 mfd 450 volts with three 220 mfd 450 volts capacitor but could not see any major changes in current input / output.

If we will see the circuit for identifying the problem then I can say following [ofcourse with my limited knowledge]

1. The BD243C is functioning as the voltage and current is induced to the coil attached to bridge rectifire.

2. The 555 timer is functioning properly as the LED is glowing [connected between pin3 of 555 and pin1 of H11D1].

3. The opto coupler is functioning properly. This is by guess but soon will built a small circuit to check this.

4. The SCR and 2N3584 is working properly as we are getting voltage at the output. I dont know wheather I am correct on this or not. But I was thinking because the capacitor will be short only when the SCR and 2N3584 is functioning.

5. Rest of the parts in the circuit is resistor and Bridge rectifire. I dont think there should be any major issue.

So to my mind the problem is there with the Opto coupler, SCR or 2N3584. There are chances that the problem may be there with the coil too [but i am not considering it as i have three coil with me and none of them are delivering the result].

What are your views on the above.

Regards

Praveen

[Sephiroth]

Low value capacitors discharged at relatively high voltage will give you a very low charging efficiency.

The closer the discharge voltage is to the charging voltage, the higher the charging efficiency. For this reason, high farad caps are recommended and to discharge them between 2 - 3 volts above the charging voltage.

[blackchisel97]

Low value capacitors discharged at relatively high voltage will give you a very low c

Hi Seph & Praveen,

I agree with - "Low value capacitors discharged at relatively high voltage will give you a very low charging efficiency" - but at the same time they should charge/ discharge faster (sharper) I have couple different variations of J.B. charger and C value at the Greatz Bridge varies from 3uF - 10uF - 10 000uF. In the book it shows 3uF. I tried 80uF photo cap before. They're fast but I didn't notice any benefit.
You can change working condition of resonant circuit transistor by changing values of voltage divider (18k, 10k resistors). Different transistors may require adjustment of both resistors ( lower values). I also believe that h21 (beta, or amplification factor of transistor) may affect its working environment. Beta is usually indicated by last letter in the bipolar transistor symbol (after numeric part), where A is lowest and C highest. If I still remember well. I know that all Bedini circuits should show particular wave form in order to be what they were designed for.

Don't give up Praveen we'll get this right

V

[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

[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

[sigzidfit]

Tranny

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

PJ

[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

[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?

[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

[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

[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

[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/renewa...html#post69701

[blackchisel97]

Goldfish memory

Thanks Seph Is this a result of fluoridation in early age

[sigzidfit]

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

PJ