Why does my PC turn off at night? But it works in ups power.
One possible reason can be a scheduled restart.You haven’t shared any other detail like the OS and its version. Assuming that you have Windows, you can check if anything like shutdown or restart is scheduled by opening Scheduler.Schedule Shutdown or Restarts in Windows using the Task Scheduler
Why doesn’t my home CFL UPS switch off when AC power is available? It only works on battery and not turning to off position automatically if a power supply came. What is the reason?
Something wrong with your automatic switching. Normally a UPS battery mode will turn off when normal power is available and also that’s the time when your battery will charge
The power just cut for about 1 second, my PC didn't turn off while everything else did. Why is that?
A few possibilities.Firstly, if it's in an office or other commercial environment, the PCs may be on an uninterruptible power supply (UPS). Even if you are at home, but didn't set up the machine yourself, it's possible it's run through a UPS by whoever set it up for you. They're a battery backup system that will let a machine run for a few minutes, and also protect against power surges and spikes. At home, they'll keep the machine running long enough for you to stay on through a brief outage, and save what you're doing and shut down the system properly in the event of a longer one. In a commercial environment, they will keep the machine running for long enough for the backup generators to kick in, and will also protect against the power fluctuations that normally result from this.If you're using a laptop, it has its own built-in backup, of course, the battery. Though that doesn't protect against surges like a UPS does, the machine will automatically and seamlessly switch to battery power if it loses grid power. It doesn't know or care if that was from a power outage or you just unplugged it to take it out on the patio for a while.Even with a desktop, they use power supplies with some pretty beefy capacitors, and those capacitors are there for the purpose of smoothing the power. If the outage really was in the subsecond range, or was a dip/brownout rather than a total power loss, those caps may not have fully drained before the power came back on, so the machine did not lose power and shut down.If you in fact don't already have a UPS (or surge strip, for a laptop, since it has its own battery), I advise you get one. And get a decent one, not the cheapest one you can find. Even a $30 surge strip or a $100 UPS is cheap compared to a cooked video card and motherboard, and it does happen.
Can I switch off the inverter and switch it on only during power cuts?
You can do that. But why do you want to do it?Inverters are capable of automatic switching over to battery power when the main power goes OFF and resume ti mains upon power resumption.Imagine you are sitting in your room and suddenly the power goes OFF. Its dark in the room as it is a night time. Now you have to struggle to find a torch (Or at least reach to your smartphone) then walk up to Inverter to switch it ON.Why do you want to do all this while it can be done all automatic within fraction of seconds. Considering you choose to do it.Hopefully when the power resumes the inverter will switch back to mains and start recharging the drained out batteries. Now before you again switch the inverter OFF you have to wait for the batteries to recharge (it may take 6–8 hours depending upon battery capacity and depth of discharge). Once the batteries are fully charged you can switch the inverter OFF.However you should be aware that the batteries while kept idle loose their charge on its own. So to avoid self discharge the inverters are designed to charge the battery at a slower rate (technically Trickle charge) so they will be fully charged for the next power failure. Since the inverter is OFF, your batteries may not be available fully charged for the next power failure.In short, let the inverter do its duty automatically and not to worry about manually switching it ON / OFF.
Why my inverter switch on battery even when power is there?
I don't tell you the exact reason because I only have your post to understand the problems.Still I am trying to give some probable result1- Input is not connected. Check power cable.2- Fuse is melted. Change it.3- Input protector is effective. Reset input protector.4- Input is too high to be accepted. Check input voltage.5- Input is too low to be accepted. Check input voltage. I assume in your case you have checked case 1and as your problem occurs some time not all the time so case 2 or 3 also eliminated.So 4 or 5 is the reasonand your fridge works fine as it often comes with a voltage stabilizer in build or externally connected.So this is a power supply problem if your inverter (which we engineer say Uninterrupted power supply invertor is part of it) suffers with this problem on regular basis I suggest you to install a good voltage stabilizer with proper current rating should be installed from which you should give the input to the inverter.I also suggest you to hire a electrician to this job.Hope I am able reply your query let me know your feedback.
What makes the computer work when the electricity goes off?
The only way this happens is if there is a battery. Laptops and slate computers have batteries. Desktop computers don’t usually, but you can buy an Uninterruptible Power Supply (UPS) with a battery backup. There are circuits in the computer (or in the UPS) which notice the power is out and switch immediately to battery without any interruption.If the power interruption is brief enough, sometimes even a computer without an battery will manage to stay on. There are power storage devices (capacitors) in all computers that protect it against brief interruptions. It’s part of the computer that converts the voltage and current from high voltage alternating current to low voltage direct current.
Gateway Desktop power button flashing. Replaced PSU, still flashing.?
try the following Unplug the power cord, next press the Power button on front of tower to drain. Locate the red voltage switch on back of tower for the power supply. Flip it to the reverse position and then back to original. Plug power cord back and try again to start. remove power cord if this doesnt work Next clean out the dust of the pc use a anti static cloth and lint free cloth. for large build ups. also ground yourself. then unplug all connectors and then replug them back into motherboard do 1 at a time. then try turning on if this fails to work then you have a bad power supply cheap power supply better then your stock 1 http://www.newegg.com/Product/Product.as...
What's the difference between UPS and PDU ?
A UPS is a power unit that provides the input voltage for your computer in the event of a power loss. Generally your computer will be plugged into the UPS. The UPS in turn is plugged into a normal power circuit (i.e. the wall outlet). If the power to the wall outlet is lost, say because the power company shut it down, or a circuit breaker "popped"; the UPS will SWITCH to an internal battery and provide the power for the computer. The time the UPS can provide computer power varies, so make sure you understand how long you've got. A UPS allows the computer to finish it's task an then be shut down correctly, as opposed to just "yanking the cord" out. PDU's are generally found in commerical or industrial settings. These Units provide power (can be of varies voltages, etc.) to a full system or multiple systems. A 6 outlet extension cord is a simple type of PDU. In Public places in the US, PDUs are also called NEMA enclosures. The PDU provides an important safety function by allowing ALL POWER to it's system to be shut off in one location. Commercial and Industrial setting often have LOCKOUT / TAGOUT procedures to ensure worker safety. This means turning off the PDU and locking the switch.
My computer shuts off when the microwave starts.?
I recently installed a new power supply and it appears to work just fine otherwise. I have multiple things (monitor, modem, external hard drive, etc.) plugged into the same UPS, and nothing else shuts off, only the desktop computer tower. Any thoughts?