DIY Tesla Switch Guide

[gyulasun]

Hi Pese,

Although I agree with some of your notices on the different circuits (see my comments below), I think also as Groundloop that the best way is to build the circuits in question from its originator and find yourself if it works or not. OF course, educated guesses can always be made in advance, depending on one's own expertize and practice, these guesses will either prove true or false.

Your notice on the diode bridge is correct, all the 4 diodes should be rotated 90 degree clockwise to get the correct polarity. (Page 5, Figure K-1 in this link: http://www.scene.org/~esa/merlib/Mueller.pdf , there is no drawing in Page 4.)

Your notice on the differing Collector and Emitter currents in Page 12. Fig. T-4 is interesting. to say the least.
I think the 5.5 Amper in the emitter can be true when the collector current is only 4 Amper IF you pump 1.5 Amper into the base-emitter junction from the transformer appropiate secondary coil.  Normally the emitter current is I_E = I_C + I_B ,  isn't it? 
However the 5 Amper flow in the negative wire between the the batteries is an unusual value indeed, considering the 4 and 5.5 Ampers in the positive wire.  All I can think of is that the AC current of the transistor oscillator may have influenced the current meters a little. 

Your notice on the Page 10 circuit would be ok for me if the charging/discharging currents were also in the order of 5-6 Ampers or higher. However the circuit in Page 10 was built for 4,8V NIMH batteries that may have had a 2-3 AmperHour capacity, so the currents involved should be much less so that the timer circuit does not have to supply several Ampers into the transformer but max some hundred milliAmpers or less.  From data sheet, the SG3524 max collector output current is 100mA, this is true, so the switching transistors should be chosen to be able to switch fully on via the transformer current convertion ratio, starting from this 100mA max output.

It is not clear for me that which timer was used for driving the Tesla switch circuit on Page 15 that includes the even higher current transistors (MJ802). They must have used an appropiate one, to be able to supply the higher driving currents.

Regards,  Gyula

[pese]

@gyulasun

tks, i know more than dozends of this circuits that "take the names from bedini entc"
and make no honor to this persons.

the circuit as above.
ANY member can build them very easy, with this relais as showned
ind the pdf link.

If you see that nothing will be lost or gain, with 100 switching with hand-breacker. you will understand. that an connected load will also
only surge power OUT the batteries!

So if you replace the relais with semiconductors, you have losses with heat, with VCE(sat in the transistors,  with Uf from  all the diodes and the bridge -- so this way, nothing to win on extro power - only extra losses.

I have constructed (and produced) voltage-doublers 6 to (near) 12 volts. (40 years ago) for car radio receivers - 12volt ti use on 6 volt car batteries (Germany) .
BUT in any way , its no WINNIG Power.

I must spend the double in Amperage in the source.
That "Watts  = volts time Amperes) that i will have . I must also spend !"
Additionally an small "extra" for the losses in semiconductors..

If some members have an ask for this simply electronics, please feel fre to ask.
G Pese

TRY ALL CIRCUITS firs  simply as possiby , in this case - breakers relais condensors batteries (and if load needed. filament lamps. (no LED or CFL)

[Groundloop]

@Pese,

>>tks, i know more than dozends of this circuits that "take the names from bedini entc
>>and make no honor to this persons
>>the circuit as above.

I have made it clear that the inventors of this circuit is Mr. John Bedini and Mr. Ronald Brandt.
I have also made it clear that I will try to replicate this circuit as close as possible to the circuit
drawing made by the two gentlemen. I have placed their names and copyright notice on
the printed circuit board to honor the inventors of this circuit.

Groundloop.

[Groundloop]

@geotron,

I'm currently in the process of figuring out how to
connect the SG3524 in a proper fashion to the timer
input lead... a bit confusing - my best guess so far
is pin #7.

Attached is the block diagram of the inner workings of the SG3524 IC.
Here you can see that the output from the IC is two NPN transistors.
The oscillator (external RC network) will alternately switch on the
two transistors. To get this IC to work you will need at least a RC
network, power and the correct way of interfacing the output transistors
to you circuit. Mr. Bedini (the inventor of this circuit) has shown how to do
that in the posted pdf document.

Groundloop.

[gyulasun]

@geotron,

Attached is the block diagram of the inner workings of the SG3594 IC.
....

It is SG3524,  not 3594.  Geotron mistyped it twice.

Respectfully,  Gyula