avr issue

[capt b]

---

a friend of mine told me that pwede ra daw dili mag gamit ug avr kay ang psu nato with avr na daw na ang iyang ckt. how true is this?
is it rily safe not to use avr anymore?

[blade4638]

imho, yes, pwede na walay avr... however, mas gaan para sa psu kung naa'y avr para menos ug fluctuations from 220v ang input voltage (dili man gud stable kaayo ang voltage direct from the power outlet), at least dili na kinihanglan mu-compensate ang psu (kaya ra sa psu ang very short periods sa fluctuations kay naa man dagko na power caps sa sulod na maka-discharge during these times na ga fluctuate ang input). kung stable ang input voltage, very slim ang chance na dili mu-drop ang iyang output voltages. naa sad ni 2nd purpose, esp kung high-quality imong avr, ma-protect sad ang imong psu kung naa'y mga voltage surges (esp after brown-outs kung wala nimo gi-disconnect ang power cable sa power outlet)... naa'y mga avr with built-in surge protection so sila ang 1st line of defense against power surges...

that's what you get with an avr... pero if you have some extra cash to shell out, i'd highly recommend getting a UPS... all UPSs have built-in AVRs (but not the other way around) so you get the benefits of having an AVR, plus protection from power outages, which is important for some tasks (e.g. flashing bios, work, etc.)

[Teban2006]

Ang PSU dunay regulator but thats the DC story after man break ang 220V AC into AC rail voltages such as 12V,5V and 3V, kani na nga voltahe mo agi ni sa rectifier diode para mahinong DC, then next sa DC voltage regulators to make these a stable DC voltages then adto nas atong PC.

Ang AVR nga gigamit for 220V AC nag function ni as regulator for AC to monitor line fluctuations, so lahi ang trabaho sa regulator sa PSU ug regulator sa AVR.

[omad]

blade4638 ug Teban2006

unsa man sad ika recommend ninyo nga AVR nga inyong nasuwayan nga barato ug pulido?

[king_coy]

at first, wa kot avr. i plugged my pc directly sa extension cord, but then, when i checked the extension outlets, nasunog cya. so i bought avr and ups. been using them together with no problems.

psu --> ups ---> avr ----> wall socket

[Teban2006]

brad sa niadtong mga times nga wala gyud koy wawart na ma tigum palit UPS, AVR lng ko pero sayang baya, maayo pa derecho nalang ug UPS makatabang pa dili madali ka guba ang atong Hardisk ug mag cge ug brownout.

Sa akong exp. AVR MITSUI mani brand ani mga 9 year nani buhi paman abrot naa paba ni na brand karon , AKAWA na brand mga 1year, GIANT brand 6 months so far ok man, mao ni AVR which price ranges from P350 to P500, pero ug may budget gyud mo UPS nlang derecho APC akong na try gamit 1 year old na ok man so far.

[omad]

ako nang ipa canvass imong gihatag nga brand sa AVR. kung UPS, mahal ra kaayo bro dili makaya sa bulsa. ubay ubay man gud akong kinahanglanon..

salamat.

[EarlZ]

Our PSU's regardless if its the top model *still* require AVR's PSU's dont incorporate a long delay time unlike AVR's which can have delays as high as 2mins to ensure that even on low voltages a clean and steady 220v is supplied to the PSU.. also lesser electrical ripple.

as for AVR recommendations.. ok ranang mga china made as long as its servo based and has a delay system.

[blade4638]

@omad: imho, any servo-controlled AVR is superior to any non-servo AVR. i've only used 1 brand, Beltron, which is a 500va unit that came as a freebie with my 1st PC (286-based) and still works fine until today. the rest of my equipment is plugged into UPS units (now using Giant and APC).

personally, i presume that for non-servo AVRs, the heavier they are the better (i sometimes ask sales persons to open up an AVR so i can see the inside). bigger transformers, heavy gauge wires, material/construction/layout of the pcb, and cooling method are what i check if i plan on getting a non-servo AVR. also, i usually ask sales persons to test the AVR with a (digital) voltmeter (connected to output) and a variable-output AC source (connected to input)

lastly, as much as possible i would recommend AVRs that use servo-control to regulate output voltage. these are a bit expensive but in the long run you get what you pay for.

[EarlZ]

For those interested in getting servo based AVR's ad2 palit sa AC/DC sa colon bana or magalianes na dira?
barato kaayo ila compared to getting it at malls or Ace hardware