I just moved to a new flat and I brought my monitor with me. My problem is that whenever the fridge starts, my monitor turns off. This is not only annoying, but I'm concerned that it could cause long-term damage to my monitor. How can I fix this? I'm thinking some kind of energy regulator, but I'm not sure.
Put your computer/monitor onto a battery backup. That way, when there is a big (but short) drain on the power, the computer/monitor will be fine.
I do this, and find that it is also very convenient during power flickers/blackouts, where I'd otherwise have to stop using the desktop computer.
A battery backup doesn't last forever, but it should definitely keep your monitor from cutting out during power drains.
As other people have noted, using a UPS is a great idea.
However, it sounds like your monitor may be particularly sensitive to power fluctuation. I would recommend, as a test, when you get your UPS home, plug your monitor in to it, and then plug the UPS into itself. This will make the UPS think that it has good power from the wall. It will eventually turn off the inverter, going to 'wall' power, just as the 'wall' power (coming from the unit itself) disappears. If your monitor still goes out before the UPS turns the inverter back on, I'd look for an active battery backup. Something that runs an inverter all the time and has a separate circuit for charging the battery when AC is present.
Oh yeah, I'd probably plug my computer into the solution as well (unless it is a laptop.) ;-)
A cheaper thing to try is a couple of clamp on ferrites on the power cables. They can be obtained from your local electronics store or online. I would start with a couple on both the monitor and refrigerator.
This sounds remarkably like a problem that a housemate and I had some years back. Everytime the fridge kicked in, other pieces of electrical equipment in the room would stutter and sometimes die.
We tried most of the suggestions I have seen in the other answers (surge protection/UPS) to no avail.
After a bit of thought and investigation we discovered that the problem was the motor putting out a surge of EM and was insufficiently shielded (it was a very old fridge)
The solution for us was to open up the fridge and line the inner cover around the motor with tin foil to act as a makeshift Faraday cage. After that, no more problems.
tl; dr; Wrap it in tinfoil
There is a big capacitor inside the fridge, when the compressor kicks the voltage will drop down or spike up. What happening here is when the voltage drop down the booster circuit inside the monitor will detect that and try to organize the voltage again.
Call someone to check your fridge capacitor, it seems the capacitor take so much voltage, maybe it's old one, maybe the compressor not working properly, for that there is stress on the capacitor
If it's okay then your monitor booster circuit not working probably, or bad design. Surge protection devices will not help you in this situation, It's only help when the voltage spikes up.
- You can use UPS but I guess it's expensive solution.
- Or you can use 1F cap and diode inside your TV after the power supply circuit :)
There's actually a tool designed to solve this problem. Search for a: "Hard start capacitor" - The problem is that your fridge compressor motor draws too much current thus depriving other devices on the same circuit. The solution is to wire up a capacitor in parallel to your fridges compressor. This will provide extra current directly to the compressor when it needs it so it doesn't overload the circuits in your house.