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Author Topic: Method to charge batteries from the ambient  (Read 25084 times)

Offline Romero

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Method to charge batteries from the ambient
« on: March 08, 2012, 01:10:54 PM »
This is a circuit I have tested recently and it works very good.
Don't subestimate it thinking 'too simple it won't work' , just try it, can be built in minutes.
This can be scaled up...

Offline Blacktail

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Re: Method to charge batteries from the ambient
« Reply #1 on: March 08, 2012, 09:19:10 PM »
Hi,

It could be very interesting, i will try after when i succeed when the replica of the system of zilano ;)
Thanks.


Offline Hitman

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Re: Method to charge batteries from the ambient
« Reply #2 on: March 08, 2012, 10:07:45 PM »
This is a circuit I have tested recently and it works very good.
Don't subestimate it thinking 'too simple it won't work' , just try it, can be built in minutes.
This can be scaled up...

@romero

2 questions before I start on it:
How is your coil wound, CW & CCW or normal with a center tap?
What are the dimensions of you antenna?

Thanks & Cheers
Michel


Offline Romero

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Re: Method to charge batteries from the ambient
« Reply #3 on: March 09, 2012, 08:17:18 AM »
This is a circuit I have tested recently and it works very good.
Don't subestimate it thinking 'too simple it won't work' , just try it, can be built in minutes.
This can be scaled up...

@romero

2 questions before I start on it:
How is your coil wound, CW & CCW or normal with a center tap?
What are the dimensions of you antenna?

Thanks & Cheers
Michel

Hi,
the coil is normal wound with center tap. Antenna can be anything, larger is better, in my experiment I used a piece of aluminium sheet, 10/20cm .
Don't need too much attention to see it working, you will see the battery charging even without the coil or the variable capacitor, instead of the coil connect the diodes together and add the antenna there. This way charging is slower but still works.
Will not work with damaged batteries but it can be done with further enhancement to the circuit, charging a capacitor and damp it sequencial..

Romero

Offline member77

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Re: Method to charge batteries from the ambient
« Reply #4 on: March 09, 2012, 10:38:09 AM »
Hi Romero,
thanks for the diagram for the battery charger.
On the schematic in the first posting of this thread you write:
"For initial tuning a bank of LEDs can be used instead of the battery."

By "bank of LEDs" do you mean several LEDs in series?
And does this mean, that when the coil and capacitor are tuned properly, the LEDs will light only from received ambient power (without any battery connected)?
So by 'initial tuning' you mean 'adjusting the variable cap for max. light output from the LED-bank'?

Is my understanding correct?
Thanks
« Last Edit: March 09, 2012, 10:40:17 AM by member77 »

Offline Romero

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Re: Method to charge batteries from the ambient
« Reply #5 on: March 09, 2012, 12:51:42 PM »
Hi Romero,
thanks for the diagram for the battery charger.
On the schematic in the first posting of this thread you write:
"For initial tuning a bank of LEDs can be used instead of the battery."

By "bank of LEDs" do you mean several LEDs in series?
And does this mean, that when the coil and capacitor are tuned properly, the LEDs will light only from received ambient power (without any battery connected)?
So by 'initial tuning' you mean 'adjusting the variable cap for max. light output from the LED-bank'?

Is my understanding correct?
Thanks
Hi,

one led if you are using no tesla coil (I used smd type, very small and low voltage) or several Led's in series if you do have something to exite the ambient.
Kacher running above 1Mhz worked best so far.
I found that even the cfl lights in the house will excite and help. I believe the system will capture all sort of frequencies from the surroundings.
Having one led lit might not show too much for some of you but connected to the battery will charge just fine.

Romero

Offline Romero

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Re: Method to charge batteries from the ambient
« Reply #6 on: March 10, 2012, 02:13:34 AM »
[/youtube]

Offline member77

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Re: Method to charge batteries from the ambient
« Reply #7 on: March 10, 2012, 06:45:00 AM »
Hi Romero,
thanks for your answer and for the clear video.

Offline lasersaber

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Re: Method to charge batteries from the ambient
« Reply #8 on: March 10, 2012, 02:39:37 PM »
What is the ground connected to?  If it is connected to your house electric ground you will get a fair amount of power running through the ground line because of it's proximity to the AC lines.  I will try a replication soon.  I have made something like this before.  In order to get an LED to light outside away from all other power sources I had to run up a 75ft antenna.  I live about 15 miles from the nearest radio station so this may be a factor.  I will let you know what I find out with your circuit.

Offline Romero

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Re: Method to charge batteries from the ambient
« Reply #9 on: March 10, 2012, 03:15:40 PM »
What is the ground connected to?  If it is connected to your house electric ground you will get a fair amount of power running through the ground line because of it's proximity to the AC lines.  I will try a replication soon.  I have made something like this before.  In order to get an LED to light outside away from all other power sources I had to run up a 75ft antenna.  I live about 15 miles from the nearest radio station so this may be a factor.  I will let you know what I find out with your circuit.
The ground wire is connected to the water pipe. I am sure that being in the house it captures waves from other electronics in the house but it works in the garden too if I tune with a variable capacitor.

Romero

Offline Hitman

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Re: Method to charge batteries from the ambient
« Reply #10 on: March 10, 2012, 08:34:18 PM »
Excellent romero,

My replication produced 6.5 volts and dead short amps was 1.4ua.
I left it connected overnight to a 1.2v nickel cadmium AA battery with a standing voltage of .925 volts and was almost fully charged this morning at 1.12 volts.

I was not able to light any leds maybe because my leds were the .020ma type but as for a Method to charge batteries from the ambient, this is confirmed. (I just wouldn't hook it up to your solar battery bank just yet :) )

Wonder if it would run the Serdgo setup....

PS: it also works with coil wound CW + CCW.

Cheers Hitman

« Last Edit: March 10, 2012, 11:15:16 PM by Hitman »

Offline Romero

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Re: Method to charge batteries from the ambient
« Reply #11 on: March 10, 2012, 09:14:41 PM »
Hitman, good to hear that, you can try charging larger batteries too even if the meter is not showing much...  just try.

Romero

Offline jimboot

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Re: Method to charge batteries from the ambient
« Reply #12 on: March 13, 2012, 09:12:13 AM »
I'm getting 300mv when I turn on a nearby cfl. Using an earth of 2.4m pipe in the ground but the Same without a ground. Diodes are 1n5194, steel wire coil with centre tap. Thanks.

Offline Romero

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Re: Method to charge batteries from the ambient
« Reply #13 on: March 13, 2012, 09:24:46 AM »
I'm getting 300mv when I turn on a nearby cfl. Using an earth of 2.4m pipe in the ground but the Same without a ground. Diodes are 1n5194, steel wire coil with centre tap. Thanks.
larger cfl will help but even with that 300mv you can still charge batteries, just try.

Romero

Offline IonPower

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Re: Method to charge batteries from the ambient
« Reply #14 on: March 13, 2012, 02:53:24 PM »
Hi i try to make something.
I use 0.2 ma led, with 4 uf4007 diode, 0.5 mm copper wire.

This is the ground.


I try near to CFL, but no light in the LED. I will try later with exact parts like Romero.


 

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