Author Topic: Interesting Voltage and Current Regulator  (Read 192 times)

Offline Mer2112

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Interesting Voltage and Current Regulator
« on: September 21, 2018, 08:12:50 PM »
Good Afternoon,

I figured since we're coming to an end here, I'd throw one more thing out there.

I came across this interesting looking voltage and current regulator today. There's a couple YouTube videos out that go through it, but it looks like you're able to set the voltage and amperage and it does the rest. Gives you the actual reading too while it's running. You still have to supply the DC power that's greater than what you'll need, but it looks pretty cool.

I just ordered one so it'll be interesting to mess around with.

https://www.banggood.com/DPS3003-32V-3A-Buck-Adjustable-DC-Constant-Voltage-Power-Supply-Module-Integrated-Voltmeter-Ammeter-p-1062475.html?rmmds=detail-left-hotproducts__1&cur_warehouse=CN

There's a 12% off coupon on the page too.

Enjoy!

Offline WayneInPHX

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Re: Interesting Voltage and Current Regulator
« Reply #1 on: September 22, 2018, 09:32:44 AM »
You may well find that it is not stable / accurate.  If you can check it against calibrated equipment, it might prove useful.
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Offline sneezewort

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Re: Interesting Voltage and Current Regulator
« Reply #2 on: September 22, 2018, 07:49:31 PM »
Looks interesting, Mer, but I can't see any mention of the input voltage. I am assuming that 32 volts is the output voltage and it would normally be connected directly to the 230 volt supply.
Everyone is entitled to my opinion.

Offline kephra

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Re: Interesting Voltage and Current Regulator
« Reply #3 on: September 22, 2018, 08:30:08 PM »
It has to be powered with a DC supply, with more voltage than you want to get out of it.
Colloidal Silver is only a bargain if you make it yourself.

Offline sneezewort

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Re: Interesting Voltage and Current Regulator
« Reply #4 on: September 22, 2018, 10:11:07 PM »
Thanks. Kephra, that clears that up. Thought it might have a 32 volt PSU built in. I have a 32 volt plug supply, so that's fine. Will order one if they turn out to be OK. Just waiting to see what Mer makes of it.
Everyone is entitled to my opinion.

Offline Stagno

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Re: Interesting Voltage and Current Regulator
« Reply #5 on: October 02, 2018, 10:59:50 PM »
Please let us know how well it works Mer.
"To acquire knowledge, one must study; but to acquire wisdom, one must observe"

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Offline Gene

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Re: Interesting Voltage and Current Regulator
« Reply #6 on: October 03, 2018, 05:49:30 AM »
The current limit on that has a resolution of 1ma. Thats way too coarse for a good colloidal silver supply.  I'd like to see 0.01ma.

Offline Mer2112

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Re: Interesting Voltage and Current Regulator
« Reply #7 on: October 04, 2018, 04:24:41 PM »
It has the same resolution as the SilverTron Elite, 1mA. I would think that as long as you check the accuracy initially against a known measuring device and adjust for any inconsistency, making good colloidal silver is very possible.

Offline wgpeters

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Re: Interesting Voltage and Current Regulator
« Reply #8 on: October 04, 2018, 04:54:56 PM »
It has the same resolution as the SilverTron Elite, 1mA. I would think that as long as you check the accuracy initially against a known measuring device and adjust for any inconsistency, making good colloidal silver is very possible.
No, the accuracy of the SilverTron is within 2% of indicated value.

You are also confusing set point with accuracy.  SilverTrons have 15 setpoints for current spaced in 1 ma increments.

Precision and accuracy are two entirely different things.

The meters in the lab power supplies with two digits of display past the decimal point are +- 1 digit.  So if it reads .01, it might be .005 or it might be .015.  That is not precise enough for low value currents.  0.005 might display as .01.  .015 might display as .02 or might display as .01.

If you wanted to measure the length of something with a yardstick, which would be more precise, a yardstick with only inch markings, or one with markings every 1/8th of an inch.  That,s a difference in precision.

Now consider a yardstick that was actually 37 inches long but was divided into 36 parts graduated in 1/8th inches.  That would have the same precision, but would be less accurate.

Do you see the difference between precision and accuracy?

So you should connect a precision (and accurate) meter between your power supply and your anode.


« Last Edit: October 04, 2018, 10:01:43 PM by wgpeters »
wgpeters aka Kephra