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When you close the switch the spike is developed, that is why some people uses resistors to charge the cap, but the resistor transfer the energy into heat,
now with a coil you can transduce it into real power.
High inductance, very low impedance coil.
DW,
I'm in total agreement with your findings and explanation.
Schpankme
"I'm not a cynic, I'm a hypocrite, there's a difference - hypocrites believe in something." -- Roy Zimmerman
Yes, it is two solid state/ sg / joule thief / setup. The best choice is the School Girl motor in resonant mode. With some generator coils the better....
No it isn't self-sustaining, and i won't close the circuit because doing that will burn the energy.
I'm trying to figure out which coil or transformer is the best...
What's the rationale for using two SGs? Are they in-sync or out of phase, or just out of tune (non equal cycle/sec)?
Why not use quafilar or pentafilar one SG (4 BJT)?
Or did it happen by chance?
Stevan C.
Last edited by StevanC; 04-16-2010, 03:49 PM.
Reason: to whome?
HUGE congrats on a really nice job on PV amp/Tesla Switch
@All - Some of the bigger solar panels are pretty energetic like 200 watts at
~27volts and ~8 amps DC, or so. Any experience or suggestions as to
best way to marry up StevanC's PVAmp with beefier solar panels? Some crude
guesses include 100 Volt Caps . . . 24+Volt charging battery - and try to stay
inside the SOA of the MJL, if possible. Just curious about the bigger panels . . .
Best,
Plazma
Last edited by Plazma; 04-17-2010, 11:11 PM.
Reason: Fix CRet in paragraph
I saw one of Johns switches at an energy conference last week in idaho. 410 volts of solar panel at 12V had no problems..... they are going to be releasing an 80 amp model!
Thanks for the information - but I am a bit confused as to the numbers
you mention - that is, 1) do you mean that a 410 V DC PV string is being used to charge a 12 V DC battery; or 2) a 410 Watt solar panel at 12 volts was being used by the switch to charge a battery bank? 80 amps on the input?! WOW! Very impressive.
I saw one of Johns switches at an energy conference last week in idaho. 410 volts of solar panel at 12V had no problems..... they are going to be releasing an 80 amp model!
Ok,
1)one doubles the voltage and slams it back to the battery(Scalar Charger)
2)but it is more then that as this one is a current charge pump.
3)This is very simple to do with two transistors and some diodes.
4)The first part of this is how much potential can you move in a micro second before the current builds up in the circuit?
John B
from post #1028
MY first guide is no.4) can be curtailed to
1)HOW MUCH(before the current builds up in the circuit)
2)CURRENTLESS POTENTIAL(before the current builds up in the circuit)
3)move in A MICRO second(before the current builds up in the circuit)
I'm starting to see the spike in my every circuit. Negistor is beyond me.
1)Spike is pulsing in a microsecond(may be 200~500 nano second)
2)Before main current flows on steady state(need 10~30us to reach max)
3)So this spike is not related to how many current flows in the circuit.
4)Impedance needs to be checked very carefully.
CURRENT is not the solution.
The only soultion is the swithing and impedance.
Onemore thing.
I saw something on the simplified circuit with 2Trs and 10 diodes.
With the correct pulsing and proper impedance
this siplified circuit CAN BE WORKED properly like othe complicated circuit.
Anyway let's go ahead and further.
HUGE congrats on a really nice job on PV amp/Tesla Switch
@All - Some of the bigger solar panels are pretty energetic like 200 watts at
~27volts and ~8 amps DC, or so. Any experience or suggestions as to
best way to marry up StevanC's PVAmp with beefier solar panels? Some crude
guesses include 100 Volt Caps . . . 24+Volt charging battery - and try to stay
inside the SOA of the MJL, if possible. Just curious about the bigger panels . . .
Best,
Plazma
Plazma,
kind thanks.
RE @all:
There is little chance in scaling up a concept not exploerd enough (=running before crouching)
Didn't You see that the circuit I posted "contains them all"?
All discussed variants of this thread are contained in my rig (I test run them all) and all have flaws vs. benefits.
I would encourage all to try build ths one - it is verified it works (now all sharing are free to roport (You know who You are )).
It does what's claimed it will (~3000A/ms)
It is a great sandbox for this tech IMHO. It is ideal:
A. for shunting diodes across some of the BJTs to explore variants with less nr. of BJTs (a diode FVD is 0,7 max, while a BJT FVD is 1V at least)
B. for shorting out BJTs with zero FVD ("clipping") for exploring "BUSS" topologies (eg. shorting both "bottom" BJTs)
C. exploring and charting gains versus various topologies
By far not exausted area yet, there is time for scaling up as it is simple and straigth forward.
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