It is the frequent power switching in and switching out which could potentially damage the projector circuits. Again, no one has concrete proof that this happens. Since projector is a very expensive of equipment, spending a little to protect it is advisable. The same goes for your AV receiver and a stabilizer for your subwoofer.
I do plan to have a stabilizer set up before all of these..i was just wondering if i need to do a Stabilizer or a UPS.
Most projectors (with bulbs) require that at the time of powering off, the bulb has to cool down. In fact the fan powers up to a higher rev. level when power off is activated. So during power outage situation the projector shuts off without cooling and if this happens repeatedly the bulb can get damaged and perhaps even explode. Hence an UPS is recommended. Whether it is mandatory depends upon how well your projector can handle shutting off without cooling.
Cheers,
Sid
Most projectors (with bulbs) require that at the time of powering off, the bulb has to cool down. In fact the fan powers up to a higher rev. level when power off is activated. So during power outage situation the projector shuts off without cooling and if this happens repeatedly the bulb can get damaged and perhaps even explode. Hence an UPS is recommended. Whether it is mandatory depends upon how well your projector can handle shutting off without cooling.
Cheers,
Sid
If it is for the sake of the bulb then does it mean it is not as important for LCD / LED ?
Thanks
I had a Chinese led projector and although the manual did not mention any cool off time, it used to get hot and I used to leave it to cool off before packing it away.LCD's have bulbs and so does DLP. I dont know about LED.
Cheers,
Sid
Offline and Line interactive UPS from APC are not advisable as they are traditionally not sine wave. I am not sure if Online models do offer pure sine wave from APC.I am using APCs 1KV UPS for my PJ, and it is handling the job well. I will advise the same to you as well
Rightly saidHi,
The Voltage stabilizer will stabilize your mains power and provide a constant 230V output and will not modify the sine wave from the mains supply. If the power goes, it is like pulling out the plug, but without voltage spike or drop. So I feel the equipment remains protected.
The UPS will give you the added advantage of manually shutting off the equipment, which is useful either if you have a computer connected where it is safer to close the running applications, or you want to finish watching the movie or song before shutting off. Otherwise, the UPS will not offer any added protection. However, if you do decide on a UPS, make sure it is an online UPS and not a simple inverter. The online UPS is constantly converting your AC into DC and back again into stabilized AC with a constant voltage. An inverter, on the other hand, takes over only when the mains power goes off, and does not provide a perfect sine wave, notwithstanding the claims of the manufacturer. This can damage equipment and is the reason why some warranties are rendered void if the equipment is used with an inverter or offline UPS.
I am not an electrical engineer, but this is what I understand. Check with an electrical engineer and let us know. Please don't go by the advise of UPS/Stabilizer dealers.
Best wishes