AC to Cap Dump

A really simple circuit, makes it easy to calculate input to the battery.
And yes, I'm splitting the positive in a FWBR ;-)

https://youtu.be/F2gmZ-9CmKM

/Hob

Hi, Hob,

very interesting and simple circuit, I think you have tuned the resistor so that the thyristor ignites on the voltage spike.

regards

Sven

Hi Hob,

> A really simple circuit, makes it easy to calculate input to the battery.
> And yes, I'm splitting the positive in a FWBR ;-)
> 
> https://youtu.be/F2gmZ-9CmKM <https://youtu.be/F2gmZ-9CmKM>

You are burning half of the energy (stored in the left cap) in the wire and the thyristor with each discharge. This circuit is nothing but a heat oven. :-(

Andreas

Hi Sven,

I'm not sure thats how SCR's work, I think it triggers as soon as the voltage at the Gate is higher than the voltage at the Katode. The choice of the resistor is for the moment simply as high as it could be while the SCR still trigger.

/Hob

Hi Andreas,

The only thing that got hot was the first cap I tried, not anymore.
A battery is not a cap so I'm not sure you're right, maybe you are, but I'm using one cap and one battery.
This is a 'cap-dumper' without the pulse-motor.

/Hob

Hi everyone,

Comparing whats going in to whats coming out of the battery I'd say I have overunity:
https://www.youtube.com/watch?v=p9FoDQZulvQ

/Hob

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HobCool!Though I can't see your data, I am pleased for you getting a good result with the battery charging energy flow.Can you put it into words for those of us device challenged, unable to receive media?Cheers Warren

Sent from Yahoo Mail on Android 
 
  On Tue, Nov 28, 2017 at 6:10 AM, [email protected] [EVGRAY]<[email protected]> wrote:       
Hi everyone,

Comparing whats going in to whats coming out of the battery I'd say I have overunity:
https://www.youtube.com/watch?v=p9FoDQZulvQ

/Hob
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I am comparing the energy into the battery with the energy out. The battery is a 13 Ah. Energy out is done with a 33 ohm resistor for 24h. Assuming the battery is fixed at 12 V that makes 

Energy dumped to the resistor when discharging:
E = Vbat^2 * h / R
In my case:
E = 12^2 * 24 / 33 ≈ 104 Wh
I have chosen Vbat = 12 V so that energy dumped is an underestimation since it started at 14 V.

Energy in is calculated using the average current into the battery:
I = C * f * (Vcap - Vbat)

Energy to the battery when charging is then:
E = C * f * (Vcap - Vbat) * Vbat * h
In my case if charging for 5 days:
E = 12E-6 * 50 * (110 - 15.4) * 15.4 * 5 * 24 ≈ 104 Wh
I have chosen Vbat = 15.4 V so that charging energy is an overestimation since it never reach that.

This gives COP ≈ 1

So if charging takes less than 5 days we can suspect OU at the battery-terminals.

I have tried all kinds of caps, but caps are not made the same, different kinds of caps with the same capacitance can give very different results. Some get hot others don't, some charge the battery really well on low voltage others don't even though the have the same capacitance. I tried a really high-capacitance cap at low voltage but the diodes fried!
 
 A bigger gate-resistor requires a higher AC-voltage, otherwise it will not trigger, but once it triggers it just consumes energy so its god efficiency to have a high resistance. Note the possibility to switch the position between the SCR and the battery.
 
 The current into the battery depends on capacitance*AC-voltage. But the energy in the cap depends on capacitance*AC-voltage^2 which makes me wonder whats going on. This together with the differences between cap-types makes it difficult to test. I need more caps. Motor-caps seems like the way to go.

/Hob

This is the circuit:

http://tinyurl.com/ybw5g98m http://tinyurl.com/ybw5g98m

/Hob

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