Bitcoin Forum

This year so far I have had 2 less than 1 second power flickers that shut off all my miners.

I do not want to install battery backups on each machine but I will if I have to.

I can also just install 1 battery backup on my main machine with Teamviewer on it and remote into all the other machines and restart cgminer, etc.

Here is what I really want.

Some sort of capacitor based battery backup that can handle 25 amps at 240V for 2 seconds. So 6KW for 2 seconds.

I just want to eliminate the power flicker problem.

Does something like this exist? 

Set the BIOS to always start on power fail, and then make sure your init scripts are up to snuff.

That is the easiest way to do it I guess.

They automatically restart.  I have to reset the IP addesses though everytime because they forget them.

I write them to /etc/network/interfaces but I am booting from USB drives and it loses that info when it restarts.

So I can just make a script that writes /etc/network/interfaces

then does

/etc/init.d/networking restart
export DISPLAY=:0
./cgminer -c cgminer.conf

I just thought it would be easier if I could stick a capacitor inline with my power to my miners and have it take up the slack up the power browns out for 1 sec.

Capacitors as purely storage devices only work well with DC. You can't store AC current in a battery or a capacitor, you can only hope to correct some kinds of brownout conditions.

What if I take a single phase 240V AC motor and attach it to a balanced 100 lb iron disc?

Once it is up to speed it shouldn't be pulling much power to stay running since there is no load.

If there is a 1 second brownout the power from the motor will flow into my subpanel and keep the power on.

Just like a kinetic battery backup but homemade.

Would this work?

Am I correct in assuming the load would be small on the already spinning disc?

I don't know how great that would work for single or split phase. That technique is already in use for 3-phase systems, it was what was done before efficient UPSs based on batteries came along. Some datacenters could run for up to 15 seconds with a continuous 2MW load on such a device when it was sized correctly.