Bedini Solid State Oscillators

[dmonarch]

Step Up

Hi Sephiroth. Yeah I have been doing some reading and thinking and was thinking of maybe winding the bedini triphilar in a step arrangement. Aswell i was thinking of making the coil which charges the battery a cadeceus.
Mainly I want the properties given by the ssg which are the magnetic fields are switched abruptly and at peak. As well i want to utilize the back emf to drive the gray tube.

Flyback from a 12v source normally peaks around 180-200v (there are exceptions) but it can be stepped up. You could pulse the primary of a 1:10 ratio tranformer (by that I mean the secondary has 10 time the number of turns of the primary) and collect the flyback from the secondary coil. this should be able to generate kilovolt spikes.

[cowboyrx]

Need help

I bought the Bedini kit with PCB from courtiestown in UK. It came with BD243 and 2n3440. Assembled it all as described on p46 and noticed that the BD243 was getting hot very quickly even w/o a load on it. So, I replaced it with a MJL21194G. Now, I don't get any output from the board at all How do I go about troubleshooting the problem? Do I have to change some other components to match with the new MJL21194G?

[redeagle]

@ cowboy Have you checked your current draw with an amp meter or digital multi meter? if you aren't drawing any current make sure your wiring is correct then try kick starting it with a magnet.

[cowboyrx]

@ cowboy Have you checked your current draw with an amp meter or digital multi meter? if you aren't drawing any current make sure your wiring is correct then try kick starting it with a magnet.

It's not drawing any current and there is no voltage coming out on the output. It's using 450 turn air cored trifilars. It's SSG, how can I kick start it with a magnet?

[redeagle]

get a stack of magnets that fits inside the core and pull it out rapidly. Check the resistance on the pot with an ohm meter to make sure it isn't burnt out. Also make sure that the charging battery is always hooked up.

[studio398]

page 46?

cowboy,

hi. isn't the circuit on page 46 supposed to be an iron core with welding rods, and not air core? maybe that is the reason for malfunction. just my .02.

have a good day.
pat.

[pvar06]

SS not working

Hi All,

I am trying to assemble the circuit given on page 46 of FEG books along with the corrections like swiping of pin 4 & 5 on H11D1 etc. The schematic as per pin diagram is as given below:

Picasa Web Albums - Praveen - SS SCHEMATIC


Based on this schematic I have assembled three circuit. The details are as given below:

Circuit - 1:

This circuit I have assemblem using the wire as connector between components. The pictures of the same are as given below:

circuit 1 front.jpg

Picasa Web Albums - Praveen - SS SCHEMATIC

circuit 1 back.jpg

Picasa Web Albums - Praveen - SS SCHEMATIC

In this circuit I have observed 12 volts and 0.25 amps at input and 200 - 220 volts and 0.08 amps at output. So the ratio of output to input was 5.33.

Circuit - 2:

For further improve on the circuit, I have assembled another circuit and this time I have made the tracks through solder wire. The picture of the circuit is as given below:

circuit2 front.jpg

Picasa Web Albums - Praveen - SS SCHEMATIC

circuit 2 back.jpg

Picasa Web Albums - Praveen - SS SCHEMATIC

In this circuit i have observed 12 volts and 0.35 amps at input and 120 volts and 0.08 amps at output. So the ratio of output to input was around 2. In this circuit I have observed Ghhhheeeee gheeee type sound on the coil.

Circuit - 3:

Further i tried to improve on the circuit so decided to use the copper clad PCB and made the schematic using itching poweder. The details as given below:

circuit 3 front.jpg

Picasa Web Albums - Praveen - SS SCHEMATIC

circuit 3 back.jpg

Picasa Web Albums - Praveen - SS SCHEMATIC

But the performance was not upto the mark. At inout side i have recorded 12 volts and 0.29 amps and at output it was 110 volts and 0.11 amps. So ratio to output to input was around 3.4. In this circuit I have observed Ghhhheeeee gheeee type sound on the coil.

I have gone through all the old post of TEEP, overunity and this forum. During my reading I found that one member got the success replacing 1/2 watt to 1/4 watt resistor, so i have tried that but no improvement.

However I have 3 coils with me i.e. one wound by me (very rough), second is wonded by me but comparitively better then first one and third was through professional winder. All the windings have 450 turns of 23 gauge copper laminated wires. Also these coils are iron core using welding electrodes. But with all the three coils on all the circuit, the results were more or less same.

In fact in the present condition, I have tried all the circuits on the 35 Ah, 12 volt lead acid battery but there was no improvement on the battery i.e. battery was not got charged even after 24 hours.

Although I dont have the Oscilloscope with me but I have asked one of my friends to check the wave form. With the wave form it is clear that the circuit is switing but the frequency observed was only 19 - 21 Hz. This test was conducted only on circuit 1.

As of today I am feeling myself out of idea to compelete this project, so requesting all the members to throw some light on this.

With regards

Praveen varma

[morpher44]

push-pull bedini

Those who study oscillators know of a style of oscillator
called "push-pull".
My thinking re: Bedini is that a circuit that is "push-pull"
in nature, with two power transistors, one PNP, one NPN,
might be a good way to go. I'm not a competent enough
circuit designer to do that. Anyone want to rise to the challenge
and show it to us?

The advantage to push-pull for amplifiers is you get a more
PURE sine-wave. Same is true of oscillators using a push-pull
amp.
Some coils respond better to sine waves.
Others, like fly-back, want saw-tooth.

A bedini bifilar coil likely wants a nice sine wave
so that the SNAP as the magnets go by occur
on a nice stable place each cycle ... or if using
only b-fields (no magnets whirling by), again you probably
want a predictable time each cycle for the
radiant spike to occur.

Also, the coils inductance likely plays a role.
If you can get your electro-magnet to oscillate
at the coils resonant frequency (and not the SLOW
bycle-wheel SSG speeds), XL will approach infinity,
voltage drop across coil will approach infinity,
watts will go way down to drive coil,
current will flow to batteries from the radiant spike w/o
having some of it wasted in the coil (or as heat).
The machine will run colder.
So the coil winding and geometry is important relative to the
frequency you hope to run it at.

-- morpher44

[Sephiroth]

Sephiroth's "Flat Boy" Oscillator

MWAHAHAHAHAHA!!!!

I'm allowed to use evil-mad-scientist-laughter since I do now actually have a secret underground laboratory!

Though the reason for the laughter is my recent project! It is the biggest solid state oscillator I have built.

I call it "Flat Boy"





SPECIFICATIONS

Coil
4cm high, 12cm diameter, the core is 4cm diameter made from atomized iron mixed with epoxy resin.




24 strands of 22 gauge copper wire. Litzed first in groups of four, then all litzed together.

12 strands used as the primary - 60 turns - 108 milliohms. (EDIT : looks like my multimeter can't give me accurate readings in milliohms... just calculated the true wire resistance is 40 milliohms)
12 strands used for secondary - 120 turns - 80 milliohms.

Primary and secondary have their mass matched, though not their resistance... may change it to a 1 to 1 transformer, though still weighing up between the extra energy gained by the larger number of windings against the extra energy dissipated by the higher resistance...

Primary is estimated to be approximately 0.3 henrys based on the dimensions of the coil. (thought it was one henry but got the maths wrong!)

Circuit
Currently 6 x MJL21194 transistors though I will buy 6 more soon to make a total of 12.

24 x UF4007 diodes in parallel going to a 500,000uf capacitor that is discharged into the charging battery periodically via a relay with a 555 timer circuit. (FWBR is NOT used)



Wire
6 AWG audio grade copper wire for connections to the batteries, capacitor and wherever else possible.

Operation
With a 1k ohm pot, I have a range between 400ma to over 1 amp. Draws 800ma when resonating at 9khz.

Cap is dumped into the charging battery at approximately 2 volts above the charging battery voltage every 4 seconds.

Switches included to turn the oscillator on and off, as well as bypassing the amp meter during normal operation. Another switch used to swap between charging the battery and loading the battery for easy testing.


I think that is all the interesting stuff... Now to see how it performs

[baroutologos]

Hi Sephiroth,

It was long time mate since our last topic exchange
You surpassed yourself on this one. nice setup. I hope performance follows as good.

By the way the circuit is Bedini SSG solid state (resistors instead of diode) ?

Anyway, GOOD JOB!

Regards,
Baroutologos

[Sephiroth]

Hi Sephiroth,

It was long time mate since our last topic exchange
You surpassed yourself on this one. nice setup. I hope performance follows as good.

By the way the circuit is Bedini SSG solid state (resistors instead of diode) ?

Anyway, GOOD JOB!

Regards,
Baroutologos

Thanks Baroutologos

The circuit I'm using is based on figure 3 from patent 11592633...

been running for a while now and the transistors are getting surprisingly warm... not hot, but noticeable and the transistors should have no problem with this kind of current, though with the lower duty cycle the peak current will be higher than normal .

Considering one of the other circuits from the patent so i guess it is still in the design stages

[Sephiroth]

hmmm... no, on second thought I think I'll stick to this circuit... the extra transistors should solve the heat problem anyway...

[Aaron]

big cap dump with mechanical switch

Nice setup Seph! May should call it Fat Boy - it is one big coil!

With the big cap dumps with a relay, please let us know how the contacts hold up with 500,000 uf. Also, When charging a batt for a few hours and then turning it off, you should be able to see the battery continue to charge up for a while.

Have you seen that yet?

[Sephiroth]

Nice setup Seph! May should call it Fat Boy - it is one big coil!

With the big cap dumps with a relay, please let us know how the contacts hold up with 500,000 uf. Also, When charging a batt for a few hours and then turning it off, you should be able to see the battery continue to charge up for a while.

Have you seen that yet?

not yet... I've had it charging a battery for the last hour or so while I discharge another battery to a decent load voltage to get an initial COP measurement from it... not too optimistic at the moment considering the heat from the transistors but you never know

didn't think about the relay contacts it's just a small single throw relay so will have to keep an eye on it... perhaps I could use a big automotive relay and solder all the throws in parallel that should reduce the impedance as well

lol, I thought of calling it fat boy but it didn't feel right naming it after a bomb Ash also had a solid state circuit he called "Big Boy" so "Flat Boy" goes nicely with that

Still no one recognized the dimensions of the coil? If no one figures it out by tomorrow I'll have to tell you

[Sephiroth]

well I didn't expect much but I have to say I am very disappointed with the first test... I'll try again when I get the new transistors... the cap charged great and from calculating the energy charging the cap it looked like it was going to do well.

Sorry aaron, but I didn't see the self charging effect this time round... though I'll keep at it.