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[powercat]

Hi Bill
have a look at the thread on super cap's
http://www.overunity.com/index.php?topic=7759.msg192833#msg192833
Electric Double Layer Capacitor's
149 products  all the different sizes. and most of the prices and PDF information
http://www.tecategroup.com/ultracapacitors/productfinder.php
cat

[jeanna]

have a look at the thread on super cap's
http://www.overunity.com/index.php?topic=7759.msg192833#msg192833

Thanks powercat,
I looked down the page a little and found this:

=====
To answer your question - yes it is possible but, expensive. The formula to figure this out is:

(Vmin + Vmax)/2 * F / 3600 = Ah

Vmin & Vmax - upper and lower voltage. This is the voltage range that your device has to work in. Vmin is the voltage that your device dies at, my GPS stops at 2 volts.

F - Farads

3600 - coulomb, a unit of electrical measure.

Ah - Amp hours (/1000= mAh)
Is this 3600 seconds?

Running the problem backward:

1000Ah * 3600 / 12V = 300,000 Farads

The voltage was for a common 12V battery since you do not specify what voltage you need.
Michael C /UltraCapacitors.org
=====

This might not be so bad if jesus needs to be in a range of 0.5v-1.6v for 5 minutes?

@jesus
you are welcome. I am glad to hear it has helped.)

jeanna

[nievesoliveras]

Jesus:

Try supercaps.  You can get 10 Farad ones pretty cheap, about $6.00 ea.  They fill fast and output only as fast as the load on them demand, like a battery. It has been my contention that you, or Jim (or both) could charge up the caps to start with, and then both run and recharge them at the same time.  But, I believe it will take the use of supercaps.  (My opinion)

Bill

Thank you @pirate !
As soon as my budget so permits, I will buy at least 4 10F supercaps.

Jesus

[nievesoliveras]

Hi Bill
have a look at the thread on super cap's
http://www.overunity.com/index.php?topic=7759.msg192833#msg192833
Electric Double Layer Capacitor's
149 products  all the different sizes. and most of the prices and PDF information
http://www.tecategroup.com/ultracapacitors/productfinder.php
cat

Thank you @powercat !
The only problem with the super capacitor saler link is that it has a minimum of 10 supercapacitors at $7.50.
That is too expensive for a test.

Jesus

[nievesoliveras]

Thanks powercat,
I looked down the page a little and found this:

=====
To answer your question - yes it is possible but, expensive. The formula to figure this out is:

(Vmin + Vmax)/2 * F / 3600 = Ah

Vmin & Vmax - upper and lower voltage. This is the voltage range that your device has to work in. Vmin is the voltage that your device dies at, my GPS stops at 2 volts.

F - Farads

3600 - coulomb, a unit of electrical measure.

Ah - Amp hours (/1000= mAh)
Is this 3600 seconds?

Running the problem backward:

1000Ah * 3600 / 12V = 300,000 Farads

The voltage was for a common 12V battery since you do not specify what voltage you need.
Michael C /UltraCapacitors.org
=====

This might not be so bad if jesus needs to be in a range of 0.5v-1.6v for 5 minutes?

@jesus
you are welcome. I am glad to hear it has helped.)

jeanna

Thank you @jeanna !
You know, the forum traffic must be big, because to post these three posts I did, took me a lot of time.

I post one, the machine freezes and says it cant find the server.
I have to rebbot, sign in and post again and the cicle repeats.
It is very tiresome.

Jesus