Bedini RPX Sideband Generator



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Thread: Impedance matching

  1. #21
    @RS thanks for sharing your build, can see you did put a lot of time effort and research into this build, bet you felt like wringing some neck when those boards blew up?

    Questions: from your experience

    One would think that SSG6 alone would be enough to charge those batteries? (I understand the genny coils are mainly for back-popping the primaries ?)

    What is your charge time on the golf cart batteries from flat to full (those are huge caps), hours?

    Do you prefer cap dump to straight Radiant charging? Why?

    Sorry for all the questions again, and thanks for your time.


  2. #22
    Yea wring some neck was about right, as that really took the wind out of my sails, as i was almost out of transistors, and so focused on the Green house and Aquaponics system, that I am just now getting back around to this project.....

    The SSG part charges the 2 banks of black L16's at 24V in the back ground, that are on a battery swapper system using 400A Latching contactors.... so as one charges, the other bank is discharging with a 24V 2500W inverter

    the 2 sets of 24V golf cart battery banks are on another battery swapper system using 40A relays, and are the primary for the SSG, and are charged from some of the the Genny coils with the big Cap Dump Pulser........

    Time to pulse charge the Golf Cart Battery's varied greatly depending on what kind and how many genney coils i was running tests on at the time.

    Some of the best times were in the 14 hour range........ and started at 12.2V under load where they were pulled down to by the SSG......

    Prefer cap dump or SSG....?

    well it depends on the application, the SSG does a better Job, but cant power another SSG because of the negative energy put in the battery.... where the Cap pulsed battery can power another SG or SSG, because the cap is receiving the negative energy and converting it to positive energy, then pulsing the Battery with it......

    also the SSG charged and very conditioned battery's DO Not take well to being put back in service, like in a Car with normal DC charging, where a Cap Pulsed charged very conditioned battery can be put back in service in a DC charging environment, and it will last a long long time. But the SSG conditioned battery's will run a inverter very well.........

  3. #23

    Newbies hopes up

    @ RS

    thanks you are giving me as a newbie some hope of getting there (some day), and showing that it can be done, yes there is always a price tag to a system like yours, one really needs to do a lot of research it is not as easy as " Please tell me what I need I want to take my house of the grid " ( I don't want to sound disrespectful to anyone, I for one thought it would be easy, until you start looking at the reality of this ) but the intentions is fine but getting down to the nitty-gritty, few have the skill/means/resource/time and funding (lets not forget friends and support) to really do it.

    Just let me understand this right the SSG (part) is charging the L16's straight radiant no cap-pulsar, and for the golf cart batteries you use the cap pulsar to charge them?

    What radiant voltages did you get from the spike on your SSG?

    One last question: Do you rectify the radiant before putting it to the cap?, why not just straight into the caps without the rectifier?

    Thanks very much for sharing.

    Last edited by Prinsloo; 12-10-2012 at 01:09 PM.

  4. #24
    Yes, the SSG is single diode per tranny direct into the L16's charging batterys, and the GC's are alternately cap pulsed charged, and at the end, I also had a Primary Cap pulse back popper running from a genny coil or 2 and the window motor pickup strand that would help keep the primary from ever running down, or at least lasting 3 to 4 times longer than with out that feature.........

    an the standard SSG circuits the spike would be in the 375V range, the SCR in place of the output diode mode had 425V + spikes and would make the protection neon's glow bright, and would kill trannys right and left, if you were not extremely careful in how you ran the ramp up to speed sequence.... The Fogal mods had 390V to 400V spikes and only one or 2 neon's barely glowing, and ran at a much lower current draw than the standard SSG or SCR mod circuits.......

    rectifying the signal with a have to turn the Hi V ringing AC with very little current, into DC, to store it in a DC Cap, until it builds up to a trigger V, and you pulse it out at a much lower V than it started out, but with some major current, with a extremely short on time, so that the cap V just drops down to the charging batts V, and the cycle starts again (you converted the signal, or re-gauged it)................

  5. #25

    Thanks for sharing all this information of your build, it is really much appreciated !,

    Have you thought of incorporating solar or wind power into your system ?

    and what are you using the power from the L16's for?

    Sorry bud, I just have all these questions !

    I am going to bug you later this month for some advice, when building the Cap-pulsar, if you don't mind?


  6. #26
    will have solar and perhaps a small wind genny to make up for any losses or mishaps where things got real run down

    the L16's powered a 2500W inverter running a Fridge, and various compact florescent lite's in the shop and various other loads depending on what was going on in my shop....... on occasion even ran things in the house when the electricity went out.......

    just ask and I will answer about any thing i can......

  7. #27
    Thanks RS

    I'm done with questions for now,

    need to catch up on some work before year end this side !



  8. #28

    I wrote most, if not all of the above........

    on small SSG units, this just says that you want to design the coil, to keep the running current below the C20 to C24 of what ever size primary battery you are using. If the current is too high for that battery, make the coil strand length longer. If the current is to low for that given battery, shorten the coil strand length to up the current a little... Or, add or remove extra slave coils, to change the current draw. Doing this does change the Impedance, but not enough to matter much on these size systems. Alternately, change battery AHr sizes, to match your coils.....

    On Larger muilty strand and muilty coil SSG units, that are powered by, and charging golf cart and larger battery's, the many parallel strands, lowers the units impedance down into the range that matches the big battery's Impedance, this is where Impedance matching is important....... units like this, will pull a fraction of the C20 rate of the primary battery

    When dealing with the Cap pulser, the Impedance of the coils is not as important, because the cap is the matching device....... But you still want the Current draw to be lower than the C20 to C24 rate of the given size primary battery for that unit......
    Last edited by RS_; 05-07-2013 at 01:51 PM.

  9. #29
    Senior Member Tom C's Avatar
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    Jul 2012
    Pacific Northwest
    Quote Originally Posted by RS_ View Post

    The last set of 3 SSG circuits running was a Fogal mod'ed circuit, and was doing really good, but the table the machine was on needed moving so the charging circuit was unhooked until i could move the other table with that set of SSG L16 charging batterys was on (heavy) So in the mean time, i had it spinning with the window motor addition, and testing various genny coils with the cap pulse charger. the primary batterys on the SSG machine table were still hooked up, but the SSG trigger switch was off so it was not running. Then some help showed up, and about that time it was time to go feed the critters, so i tell them to not touch any thing and went off to feed.... Then in the middle of feeding, they starting hollering that it was was on fire..... So i ran my butt up to see what the problem was, and when i came around the corner, smoke was boiling off of it. So i grabbed a wrench and unhooked the primary battery lead to the relay swapper system to shut it down.

    one of them must have flipped the trigger ON/OFF switch and with the output unhooked it blew up, and when Golf cart batterys short out something, it burns, so that set of 3 SSG PCB's were toast.....

    So at that time i was building the Green house and Aquaponics system and all my $$$ and time has been devoted to that since then, so i will get around to rebuilding the SSG PCB's, and buy some more L16 and GC's to get it all back to running real soon......
    Hey RS what was the size of the cap, and what was the spec on the bleed resistor?Tom C

    experimental Kits, chargers and solar trackers

  10. #30
    Senior Member Faraday88's Avatar
    Join Date
    Sep 2012
    Bangaluru, Karnataka, India
    Quote Originally Posted by forelle View Post
    Hello everybody,
    It's allways talked about that the coils should match the impedance of the battery,but how is this made?
    I hope somebody can help.
    Impedance Matching is fundamental in power transfer theory in Electrical engineering. if you have an Electrical engineering background in the Circuit theory there is this 'Maximum power transfer theorem' which states that the Maximum power is transfered from the source to the load if the load impedance is a complex conjugate of the source impedance. what this means is stricktly for a Resonant and unity(1) power factor condition. A transformer is typical to match the two impednces between the source and the load.
    This Theorem is applicable here too, the only difference being that in our case here is for a DC power transfer system. and other aspects such as the 'load' being a Battery and the source being an intermidiate stage of the Coils representing the input Battery and hence it should reflect 1:1 coupling.
    The Interaction of the Radiant Electrical excitation is evoked inside-out in the batteries (both the Primary and Secondary) and hence the coupling representing the Impedances should be as close as possible.
    when you start with a virgin formed batteries from the factory, the internal impedence of the battery is lot higher than what you end up after several cycles of Charge -discharge using Radiant Electricity. this lowered impedence is a transfer of the 'lowered' coils impedance reflecting inside the batteries.
    the next question is how do you lower the coils impedence? to answer this question,
    you need to study the various geometrical construction of the coils and their parameters that affect the impedence like say the Tesla's flat-pancake geometry of coils, the number of coils and the number of turns.
    Tesla's taught us how to Increase the Inductance of a coil, whilst reducing its Impedance! (Inductive reactance and so Impedance is a dircet function of its Inductance for a given Frequency) when you deal with the Radiant, you simultaneously alter the DC and AC parameter of a given physical component in an additive manner.
    hope that clears it.
    Last edited by Faraday88; 05-26-2018 at 06:56 AM.
    'Wisdom comes from living out of the knowledge.'


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