avr electric consumption

[african888]

question. gaano kalakas ang consumo ng kuryente ng 1avr? does it also consume power if its left on, but the equipment attached to is off?

[vvti2.0]

Yup, it will consume energy kahit wala load, kaya nga sya warm. If my load naman, depende ang consumption nya sa load mo, mas mataas ang dadaan na current, mas mataas rin siempre losses.

[12vdc]

Yes it does. Any electric/electronic device as long as the circuit is complete and electrons are flowing. Because energy neither can be created nor destroyed but converted to some other forms of energy. Example is the resistor with a semiconductor LED driving the power indicator of the AVR where electron flows to the material some are converted into light others are consumed by friction producing heat. The power supply of the AVR may come in a form of transformer where voltage is converted by induction, again not all energy are induced because there will be losses somewhere in the material and some in a form of friction=heat. The "plugged" equipment could also be using a small circuit for powering/snoozing the equipt.

If the fine print doesnt show current draw on standby use, one way of accurately measuring the consumption is thru the ammeter connected on the mains. A small computer AVR should be in milliampere range standby mode.

[kisshmet]

Another perspective is the use of the electronic component known as transformer by any electronic device like an AVR

The function of a transformer in any electronic device is to step down the 220VAC to a lower AC voltage (typically 12VAC) before its converted to DC voltage required by the rest of the electronic components of the AVR. Its made up of 2 coils, the primary & the secondary. The primary is connected to the 220 outlet & the secondary is attached to the AC to DC conversion circuit of the AVR

If the power switch is not located between the 220 plug and the primary coil of the AVR will continuously consume electricity if its kept plugged because there is a complete circuit between the 220 outlet and the primary coil of the AVR transformer

[userfriendly]

Yes it does. We had a very old AVR that used as much as 10 watts with no load.

[african888]

the AVR is a generic one thats being used for computers. i think its 500watts. so tama ba pag naka on, depende sa load ang consumed electricity? kung laptop ang naka saksak, so mga 65w lang consumption and not 500w ?

ang isip ko kasi, pag naka on ang avr ko, automatic 500w ang consumption, regardless of the appliance that is connected.

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the AVR is a generic one thats being used for computers. i think its 500watts. so tama ba pag naka on, depende sa load ang consumed electricity? kung laptop ang naka saksak, so mga 65w lang consumption and not 500w ?

ang isip ko kasi, pag naka on ang avr ko, automatic 500w ang consumption, regardless of the appliance that is connected.

[testament11]

Di naman. Ang AVR, pag sinabi X watts, yun ang kaya niyang i-handle. So kung 500 watts AVR, hanggang 500 watts ang kaya niya.

[box_type]

Another perspective is the use of the electronic component known as transformer by any electronic device like an AVR

The function of a transformer in any electronic device is to step down the 220VAC to a lower AC voltage (typically 12VAC) before its converted to DC voltage required by the rest of the electronic components of the AVR. Its made up of 2 coils, the primary & the secondary. The primary is connected to the 220 outlet & the secondary is attached to the AC to DC conversion circuit of the AVR

If the power switch is not located between the 220 plug and the primary coil of the AVR will continuously consume electricity if its kept plugged because there is a complete circuit between the 220 outlet and the primary coil of the AVR transformer

does this mean that if the switch is located between the 220 plug and the primary coil the avr is not consuming electricity even if its plugged in the 220 socket?

[CVT]

does this mean that if the switch is located between the 220 plug and the primary coil the avr is not consuming electricity?

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does this mean that if the switch is located between the 220 plug and the primary coil the avr is not consuming electricity?

That is correct bro,- no electricity consumption as you cut it off from the main.

It is just like plugging in a plain extension (outlet) without any load...

Vampire consumption (current term) is mainly due to the transformer (hysteresis)....



"The measure of a man is what he does with power" LJIOHF!

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[kisshmet]

One more thing about AVR do you even wonder why it is offered for free by most computer shops?

Because most AVRs are a sham, meaning it doesnt work as an automatic voltage regulator. Its a simple pass through circuit with surge suppressor

An AVR is supposed to maintain a certain voltage which is 220VAC. Since by nature electricity provided by electric utilities fluctuates. Its the job of the AVR to keep it stable in order to truly protect your computers. When AC voltage drops below 220 the AVR push it up back to 220 and vice versa

A true AVR is one that employs a variable transformer. When outlet voltage drops the variable transformer of a true AVR will step up the output voltage and vice versa

Dagdag konsumo lang sa koryente yang mumurahing AVR kuno

[12vdc]

Mag UPS ka na lang, yung online type wag yung backup type para sigurado.

[african888]

what do you mean sigurado po>?

[CVT]

Because of the characteristics of the battery, which makes up the ups, it is a de facto voltage regulator and power conditioner... Still for very sensitive equipment, we provide an adjunct (and redundant) power conditioner....

[12vdc]

what do you mean sigurado po>?

Online ups(or sometimes called double conversion) has its inverter always on regardless of mains input condition which means the output voltage is fixed regardless of mains input fluctuations.

The backup typeUPS(also called standby or line interactive)adjust output voltage only at a certain upper and lower threshold of the mains, ex: mains V dips to 190V, inverter engages to correct the output V to 220V, same happens when input voltage goes beyond 240V. The time in between turning on the inverter means delay. Delay is always a problem, even humans don't want delays.

Now, comparing the delays. A backup UPS using a solid state relay or mechanical contact will respond at about 2-20ms while the typical potentiometer-type AVR reacts in half a second or more depending how slow the wiper and motor movement. Online UPS delay is 0(zero) ms.

[oj88]

One more thing about AVR do you even wonder why it is offered for free by most computer shops?

Because most AVRs are a sham, meaning it doesnt work as an automatic voltage regulator. Its a simple pass through circuit with surge suppressor

An AVR is supposed to maintain a certain voltage which is 220VAC. Since by nature electricity provided by electric utilities fluctuates. Its the job of the AVR to keep it stable in order to truly protect your computers. When AC voltage drops below 220 the AVR push it up back to 220 and vice versa

A true AVR is one that employs a variable transformer. When outlet voltage drops the variable transformer of a true AVR will step up the output voltage and vice versa

Dagdag konsumo lang sa koryente yang mumurahing AVR kuno

I can't say that is true. There have probably been more than a dozen 'cheap' AVR's I've seen and opened up. They all work to regulate the output to some extent. I have not seen one that's been hard-wired to be just a pass-thru device.

But you do get what you pay for. With the multitudes of these cheap brands I've observed, some will only have a single boost and/or buck step. Some just 2 boosts or 2 bucks, not both. Most lack the fuzzy logic to have different boost and buck switchover point so those models would tend to oscillate when the input is near or at the switchover voltage. But for all intents and purposes, they all have a regulating circuit. They're not the best design but if push comes to shove, they do offer a reasonable bit of protection in most cases.

To test AVRs and UPSes, I use a variac in my lab.

[vvti2.0]

Yung cheap avr, ordinary transformer lang laman, yung mamahalin, servo ang laman.

[african888]

Online ups(or sometimes called double conversion) has its inverter always on regardless of mains input condition which means the output voltage is fixed regardless of mains input fluctuations.

The backup typeUPS(also called standby or line interactive)adjust output voltage only at a certain upper and lower threshold of the mains, ex: mains V dips to 190V, inverter engages to correct the output V to 220V, same happens when input voltage goes beyond 240V. The time in between turning on the inverter means delay. Delay is always a problem, even humans don't want delays.

Now, comparing the delays. A backup UPS using a solid state relay or mechanical contact will respond at about 2-20ms while the typical potentiometer-type AVR reacts in half a second or more depending how slow the wiper and motor movement. Online UPS delay is 0(zero) ms.

this seems a good idea. can you estimate how much is the online and the backup ups to power my desktop?

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Online ups(or sometimes called double conversion) has its inverter always on regardless of mains input condition which means the output voltage is fixed regardless of mains input fluctuations.

The backup typeUPS(also called standby or line interactive)adjust output voltage only at a certain upper and lower threshold of the mains, ex: mains V dips to 190V, inverter engages to correct the output V to 220V, same happens when input voltage goes beyond 240V. The time in between turning on the inverter means delay. Delay is always a problem, even humans don't want delays.

Now, comparing the delays. A backup UPS using a solid state relay or mechanical contact will respond at about 2-20ms while the typical potentiometer-type AVR reacts in half a second or more depending how slow the wiper and motor movement. Online UPS delay is 0(zero) ms.

this seems a good idea. can you estimate how much is the online and the backup ups to power my desktop?

[12vdc]

Around 7k yta yung APC rs o su series? 500va. Check na lang po sa site.

[gearhead000]

Agree kay OJ88. Kahit papaano yung mga cheapie 500W kuno AVRs for PC eh me boost and buck function naman. Kaya lang, napaka-limited nga lang as it will have finite switchover points, like as mentioned mga 3-4 points lang. Kaya lang, on its own usually kaya naman ng PC power supply yung mains fluctuations. Speaking of power supplies, yung mga newer APFC power supplies hindi siya compatible sa mga standby or backup UPS. Kelangan nito eh yung online UPS na. Aside from the technical differences, medyo malayo rin ang price difference between the two.

[12vdc]

^Bakit hindi compatible? There are inverter that are square wave, stepped sinusoidal, pure sinewave yung mga online type.