Question Electrical issues ?

[ragez0r]

great, so my gaming laptop has zero security here.... not fun putting 1500$cad at risk.....but you know i will

quick question... if i charge a 12v battery via land power... what bad in electricity (static, voltage fluctuations) can actually be transfered to said battery ?? or does the conversion from ac to dc neutralize it somehow ???

PS.. went to a PC store, saw a metal pc case for 1350 php.. told myself that i can get cheaper.. so i did.. 500 php online.. effectively 10$usd... will receive in 7 days or sooner... ill try to connect a photo...

kinda ordered it without checking the dimensions
wtv, if youve ever watched a Canadian show called "the red green show", you know that with duct tape, i can do anything

 

[ragez0r]

Read this discussion, especially the bit about Dell not recommending a "modified sine wave" mains input to one of their laptop PSUs. It's the laptop brick that might be damaged first. Again, the quote from Dirty Harry springs to mind. It's your choice.

https://electronics.stackexchange.c...er-destroy-damage-the-ac-adapter-for-a-laptop

yep, glanced over it... but it seems that this will only occur if i use the UPS.. and so far we both agree that my UPS is about as good as a 3 month old cheeseburger ... however if i just use an ordinary house (land) power and use a cable that is already making contact with contact with the metal beam in my home that takes care of the grounding issue, what is left exactly ? irregular voltage ??? static ???? if the voltage goes too high, i imagine the GFCI plug that i use will pop

 

[ragez0r]

cyberpower VP1600ELCD UPS

960 watts.. claims to be pure sine wave

hefty 6300 php..... umm 1600VA on battery it says simulated sine wave

and i dont understand the rest of the jargon

 

[Misgar]

kinda ordered it without checking the dimensions

Oh dear, oh dear, oh dear, oh dear! Most people check the case dimensions before ordering, so they have a good chance of fitting all the parts inside. Get out your oxyacetylene cutter, plus a big sledge hammer, to squash everything in. Still, if it's a total disaster, you can take it back to the shop. It should be OK, but........ (i give up).

use a cable that is already making contact with contact with the metal beam in my home that takes care of the grounding issue,

As discussed earlier, the "earth" wire you've used may not be thick enough to handle very high fault currents and the Bulldog clip used to hold it against the beam isn't anywhere near meeting electrical grounding requirements. Still, it's your life that's at risk, not mine.

if the voltage goes too high, i imagine the GFCI plug that i use will pop

Wrong. GFCI (Ground Fault Circuit Interrupters), also known as Residual Current Breakers, or as I still call them, Earth Leakage Circuit Breakers, are not designed to protect from over-Voltage.

Instead, as the term "Current" in the name implies, they're they're designed to trip when the Current returning to the Neutral connection is at least 20mA (or 30mA) lower than the current entering through the Line input. Nothing to do with Voltage.

I've seen (and measured) excessively high voltages in hotel rooms whilst abroad:-

In one instance when the town mains failed, the hotel staff switched on a large diesel powered generator, set to 300V AC. All the light fittings in my room exploded in showers of sparks and gobs of molten metal dripped out of a fluoresecent lamp ballast.

Another time, I returned to a different hotel room to find all the lights had blown (literally). Using my torch, I found shards of broken glass from overhead bulbs littering the floor, the bed and inside my open suitcase. I measured the voltage at the wall and found it was 330V AC. A small petrol powered generator outside was screaming its head off, with a broken speed governor.

so far we both agree that my UPS is about as good as a 3 month old cheeseburger

Your UPS is better than a 'poke in the eye with a sharp stick', in as much as it hasn't killed your computer yet, but without measuring the AC output waveform on a 'scope, it's impossible to diagnose how "good" it is at long distance.

irregular voltage ??? static ????

Irregular voltage certainly, short duration transients, surges, dips, brown outs, RFI, yes, but I don't associate "static" with low impedance power circuits, only with high impedance.
https://en.wikipedia.org/wiki/Static_electricity

so my gaming laptop has zero security here....

No laptop is 100% secure anywhere on Earth, unless switched off and locked in a waterproof, earthquake proof, GBU-57A/B MOP proof, asteroid proof, subduction zone proof, End of the Universe proof, bank vault. Even then, the battery will eventually leak (maybe). It might also get dropped or stolen.