Author Topic: USB POWERED COLLOIDAL SILVER GENERATOR  (Read 5197 times)

VS

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #15 on: December 14, 2018, 07:59:11 PM »
TheDen, in order to boost the voltage from a standard micro USB cable, you can use this:
https://www.aliexpress.com/wholesale?SearchText=micro+usb+step-up

Regarding the current regulator, I did not know this device proposed by chrisflhtc.
Since each one works up to 10 V, three in series are needed for <30V power supply.
Smart device, but not flexible like LM317 with a potentiometer.
With these diodes, if you need to change the current, you need a set of diodes for each current you need.
« Last Edit: December 15, 2018, 08:27:19 AM by VS »

Offline chrisflhtc

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #16 on: December 14, 2018, 09:00:25 PM »
100 volts! I use three in parallel to get 15ma. I do .5L at a time  at 15ma 3 hours for 320ppm. No need for me to be flexible with this I have other devices to vary the current. I like simple it works.
C

Offline drewcifer

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #17 on: December 15, 2018, 01:56:23 AM »
@chrisflhtc
If each diode is .5mA's, wouldn't 3 in parallel only equal 1.5mA's? I purchased (10) 5mA diode's from Mouser a few years ago and when I started adding more than one in parallel it increased the current by 5, i.e., (1) gave me 5mA, (2) gave me 10mA's, (3) gave me 15mA's. How did you get 15 mA's from 3 diode's in parallel if each one is only .5mA?
'Bohr was inconsistent, unclear, willfully obscure and right'
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(1928-1990)

Offline Gene

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #18 on: December 15, 2018, 04:18:33 AM »
Those current regulator diodes were discussed here years ago. They have a serious issue.  By virtue of current flowing through them, they heat up which moves the current set-point.  As such, they're not overly stable.  If the set current drifts during a run you're not going to have any clue exactly what PPM you made.

FromTheDen, look back to my post (#8) in this thread.  I explained it there (LM317) and pointed to a link to a datasheet where there's a schematic for it (its only 2 parts - LM317 and current setting resistor).  As I said though, the better solution would be to use a potentiometer connected as a variable resistance in place of the fixed resistor so you can adjust it to get whatever current you want.  The equation will help you determine how large your potentiometer must be in resistance to give you the range you're looking for. This is about the simplest current limiter you can build that is stable and can handle fairly large currents (depending on the power rating of the resistor or potentiometer you choose to use).  Surely up to 30ma isn't an issue, perhaps much higher.

As far as a boost regulator, there's a little module about the size of your first digit of your thumb that can boost any input voltage from maybe 2V up to as high as 28V.  5V is perfect.

https://www.aliexpress.com/item/1pcs-Smart-Electronics-DC-DC-SX1308-Step-UP-Adjustable-Power-Module-Step-Up-Boost-Converter-2/32789443916.html?spm=2114.search0104.3.120.1d361a25ckj2g5&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10068_10130_10890_5730315_10547_319_10546_317_10548_10545_10696_453_10084_454_10083_10618_5729215_10307_538_537_536_10059_10884_10887_100031_321_322_10103-5729215,searchweb201603_51,ppcSwitch_0&algo_expid=eea97d72-3093-488b-8033-017aed59b9a7-17&algo_pvid=eea97d72-3093-488b-8033-017aed59b9a7

Thats a link to one of many vendors on aliexpress who is selling those things. Nope, not much to it at all.  The only caveat is that its a BOOST converter meaning that you can't set it for an output voltage lower than what your input supply voltage is (not that you would in this usage).  Thats probably obvious to most people but just so its said...

Offline FromTheDen

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #19 on: December 15, 2018, 01:58:43 PM »
Thank you all :)

VS

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #20 on: December 24, 2018, 01:05:25 PM »
@Gene: With a SilverTron Elite in hand, I will probably never need to build a colloidal silver generator, but just for reference, would you draw out the circuit diagram for a LM317 unit? What would it take to boost the voltage from USB or a lower voltage wall wart? I thought I had diagrams from earlier posts, but I lost them.

FromTheDen, I opened a new thread about LM317 Constant Current power supply, where I posted the circuit and parameters:
https://www.cgcsforum.org/index.php?topic=4380.0

I also added a link to download a spreadsheet, which allows to adapt the circuit to particular set-ups.

Offline FromTheDen

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #21 on: December 24, 2018, 01:38:14 PM »
Sweet!

Dashx

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #22 on: March 20, 2019, 01:50:33 AM »
Hi all, I'm new to CSCGforum and very humbled by the experience you guys have..

I make 40 litre batches of silver (and gold) in a 50 litre fish tank. Each Litre @ 200ppm uses approx 200mg silver, 3g maltodextrin, 3g gelatin.
I use silver bullion coins 99.999%
49 volts @ 6 amps.
A small fish pump passes water rapidly past the coins in the tank.
I have the tank sitting on an induction cooker and have a pot inside the tank to heat it to 60-80 deg.
This usually takes nearly two days/batch.

Please critique...
 

Offline kephra

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #23 on: March 20, 2019, 02:14:56 AM »
How do you know its 200ppm?
At 6 amps, you should liberate 400mg of silver per minute, so 1/2 minute per liter and 20 minutes for a batch.
No, I don't think so.  That doesn't work out.
There is the unknown and the unknowable.  It's a wise man who knows the difference.

Dashx

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #24 on: March 21, 2019, 06:40:57 AM »
Hi Kephra, much respect to you, your knowledge is impressive and well renowned.

I however follow rudimentary chemistry, use recipes, and didn't consider the reaction continuing beyond the reducing agent.
 Without measuring the weights of the coins before and after each batch, the 200ppm+ I'm chasing is amber in colour and I've yet to have a batch take 20 minutes, or even 20 hours.
 Any advice would be most appreciated.
 

Offline kephra

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #25 on: March 21, 2019, 10:56:05 AM »
Quote
I however follow rudimentary chemistry, use recipes, and didn't consider the reaction continuing beyond the reducing agent.
So are you saying that the rules of physics and chemistry do not apply to you?

I suggest that you actually measure your current.  I bet it is not 6 amps.
« Last Edit: March 21, 2019, 12:02:53 PM by kephra »
There is the unknown and the unknowable.  It's a wise man who knows the difference.


Offline Gene

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #27 on: May 30, 2019, 09:43:08 PM »
Not for current because the resolution is 1ma. Thats not nearly good enough.  0.01ma is and thats 2 orders of magnitude better than what that thing can do.

None of this stuff is designed for the purposes we need. Our needs are a bit unique.

Current limiters on power supplies, if you're lucky, can resolve to 1ma but then this makes sense - its over-current, not maintaining a set current to high accuracy.

People have looked at many commercial products and I can't recall anyone finding anything that regulates current to a high enough accuracy to be useful to us.  That doesn't mean something doesn't exist - just that no one has found anything yet.

VS

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Re: USB POWERED COLLOIDAL SILVER GENERATOR
« Reply #28 on: May 30, 2019, 11:26:53 PM »
This one has 4 digit resolution, but the accuracy is 1/1000. Voltage 4-24V:
https://www.aliexpress.com/store/product/RD-UM25-UM25C-for-APP-USB-2-0-Type-C-LCD-Voltmeter-ammeter-voltage-current-meter/923042_32855845265.html

This other one claims 5 digit resolution (!), but the same 1/1000 accuracy. Voltage 3.5-24V:
https://www.aliexpress.com/store/product/RD-TC66-TC66C-Type-C-PD-trigger-USB-C-Voltmeter-ammeter-voltage-2-way-current-meter/923042_32968303350.html

Should your current regulator be not very precise, these devices measure with good precision the total mAh.
What you dont have is the automatic shut-off at the desired mAh, but you can use an alarm clock to alert you a few minutes before the required time, in order to manually switch off the power supply when you reach the target mAh.

« Last Edit: May 30, 2019, 11:48:35 PM by VS »