Originally posted by bistander
View Post
Any help is appreciated!, I don't have a Variac, but have it on my wish list...
Now, according to all I have learned about Inverters -which is not much btw- is that the cut off circuit is basically monitoring the Input side, where it constantly reads Battery levels and it is programmed to cut off power at like 11 some volts or whenever amps can't satisfy the load...since there is another "smart" circuit set at output, reading load characteristics to then send it via opto-coupler (EL817) back to Input Control Circuit.
Above I was referring to a simple 750W $39.99 Harbor Freight Inverter, the issue here is that it sucks like 4.9 A from Battery to deliver like 119V at one of the outputs, when connected to exciter, which is fine until I load the same drill I was using before with the mechanical switch, and I could press trigger all the way...now with this setup I can't do that... amps rise on both ends and shuts off inverter.
Also, it fails to respond when I connect the parallel AC Cap to exciter...it don't shut off output, but becomes non responsive.
Battery was pretty low, so I charged it last night, and today I will be doing some more testing...
I believe a more reliable unit to work with here would be the APC Back up (which has the same square simulated wave), since it has an auto circuit to disconnect batteries once AC Power is restored, which is great for self looping system from one of the high end voltage outputs of generating coils. Plus is designed to run with batteries for like 15 minutes which is enough to get generation going, fill caps banks to retro-feed the system.
Therefore, I am more concern about not to spent that much amperage at Input which would regulate Output power...and so, I may wind a finer wire exciter to see if it works at much lower amps with it...it is just a matter of finding the right combination to success.
Thanks again and regards
Ufopolitics
Leave a comment: