jrk 12v-12 power energy solution??

:hi: hello, the reason for this is that this Procurement Information see that many users are making their simulators used sources of power and to strengthen the amperage also use batteries in parallel, so I wonder if this diagram presented here might be a solution for not using batteries in parallel, I think that using a car audio capacitor that could help a little power source to deliver more energy or amperage to the motor when working, I'm no electrician, not if you write is absolutely true, someone has more idea about this? :?

Hi christian, my solutino finally working good and without the connection lost problem.
My motor have to do a great and hard work to lift, push, tilt my 3dof platform but with the following steps I am OK so I think that a 2dof will be OK too! :


1) Use a USB hub (2Amps)
2) Use a 20Amps (or 30, is better) power supply or a car battery for each motors. So NO parallel batteries (advice by pololu)
You can also use ONE single battery to power all your motors but NO parallel batteries.

3) use heatsinks and fans to fresh your jrk!

:brows:

:clap: good aldoz that you've solved your problem, but I wonder if what I propose here is possible, I buy 2 power supplies 12v-30 amp each (one for each motor), I wonder if the capacitor could help deliver more energy and care so as not to damage the power sources when asked motors more energy :?

Hi again, I think your power supplies are pretty good. 30amps to handle the 2 dof force request is pretty sufficient.

I am sure you have not the necessity to use the capacitor to help your power supplies to power your motors.

have you had any electrical problems since now without the capacitor?

Set the JRK's to 28 amps max current and set motion to suit so as you do not get max current errors.
That will help.

when they reach the sources of power makes testing, I would like the 2 sources of power sufficient enoughn

Just a though on capacitors, they are good for car amplifiers, but wouldn't be good for motors. Motors have bigger and longer current drains than amplifiers and speakers.
You would probably need a heap of capacitors to cope with what one battery could do.
As said, try setting the power supplies at 14-15 volts and up to 28 amps, then set the motion to suit this to stop max current exceeded errors in JRK utility. This way the power supplies would not be driven to absolute maximum.

:missinglink: I found this post where a user seems to use a capacitor for your project, but the truth I'm using the google translator to understand what you wrote, but not very good English translated into my language :

my-simple-sim-motion-chair-t1667.html

I had a look at this post, good project considering I have done something like that as well.
The capacitor is hooked up to a relay circuit, so when the capacitor drains, it trips a relay, recharges and so on. I do not really understand how he got it to work. Try it if you like.
If you are planning to run two 15v 30 amps power supplies, as long as you set the max current in jrk utility at 28 amps or less, you will not need a capacitor. The power supplies will do just fine. Just set the motion profiles so you do not get BIG motion spikes. I used to run two computer psu on my previous wiper setups, they were really only putting out more like 18-20amps per psu, so I set max current in jrk utility at 22.5amps, then worked my profiles down so as they did not create big spikes and trip out the psu.
:

They relay he describes (my-simple-sim-motion-chair-t1667.html) is just a safety circuit once it's connected. He bypassed it to get it to work. A normal application for a capacitor is to smooth the voltage after a rectifier, because a rectifier doesn't produce a smooth voltage. That's what he's using it for. The higher the current draw, the bigger the capacitor has to be, or else the capacitor will drain too much between each pulse.

Exactly as it says Tahustvedt, the capacitor is to minimize the ripple generated by the battery charger used in the project ... You get a perfect CC


Without the capacitor:


With the capacitor:


Regards

I now understand its function :clap: !!, it means giving more certainty to the source of power, and makes it more clean energy! :yes: , then future use can be a good option! :thx: aldoz, david, Tahustvedt, estanilabo!