There are some power saver devices shown in TV advertisements that they can save electricity bills.
But, does they really cut down electricity bills as advertised? Does they really cut down bills by 50%?
No.
How they can save bills and how much ?
They merges the cosine spikes in electrical waveform resulting in less spike height, so they can save bills a bit. They are simply plugged into wall plug and they do that by help of a capacitor. There are some indicator lights in the device which does nothing but just shows power ok. It can save power around 10% actually.
Which appliances power consumption it can make low?
Only inductive loads produce cosine waves and it can be useful in cases of electric heaters, air conditioners, electrical motors, induction cookers, etc.
How to make it?
To make power saver circuit, you just need a capacitor of 5-10µF of 220V or 440V according to your area grid voltage is 110V or 220V.
For this, I’d recommend buying the oil based capacitors that are used in ceiling fans. They are just 2.5µF, so you need to parallel 2 to 4 capacitors. After that, just connect them into plug and see it works.
You can also use any other oil filled capasitors, like used in water pumps, to make power saver circuit.
Just choose the one with correct voltage rating and make sure they're non-polar capacitors.
Bottomline: If you run AC, refrigerator, electric water pump, etc then connect a capacitor at the same plug to save some bill.
Good reading: http://electrical-engineering-portal.com/the-real-truth-behind-household-power-savers Thanks Prakash!
main ne 2 capasitor lagain he aik 2.5uf ka or 4.5uf ka kia main or capasitor laga sakta ho ya nahin
That's quite enough.
I myself made power saver using 20micro Farad Capacitor. I am saving 1.5 units per day.
Congrats.
Hi,
Happy New year 2013 !!
Can you tell me how to make the power saver with a 20uF capacitor? I am having 3 phase connection @ my home.
Thanks in advance.
Regds,
Mani
how much capacitor is used for a double door fridge it is consuming a large amount of power help me to find the solution
Dear sir,
i have spare capacitors 25 mfd capacitor +-5% 440vac. can i use it. can u tell me pls how to check capacitor is working or not. i mean capacitors is working properly.
thankx for your help
Insert capacitor to mains plug and switch it on. After few seconds switch the plug off and take out capacitor and short the two pins. Is there is powerful spark and sound, the capacitor is fine.
thankx a lot sir
Thank Anup,
You saved my Rs.1600/- which is the market price of the power saver, but in the marked we used to see the small adapter just about 300 grams weight. what contents insides?, sure not this capacitor
That's capacitor. Just buy and open it for your curiosity.
Hi Arup Ji,
My New year 2013 wishes to you !!
1) Shall we use a 20uF capacitor instead of 10uF ?
2) Let us know how can we use these capacitor for a 3 Phase connections . I am having 3 phase connection @ my home.
Pls reply my query.
Thanks in advance.
Best Regards,
Vijay
Mr . Arup
By connecting capacitor u can never reduce electricity bill as fundamentals bill ehich u r paying is for onlly real power i.e. KWH (Killowatt Hour) by connecing capacitor in parallel u are improving power factor and reducing Reactive power KVAR ( Killovolt ampere reactive) but not changing real power. Real Power is the power which u converting in to use able form of energy and reactive power is not converted into real work or useable form of energy. so u r carged for only real power i.e. KWH. I recommend please clear ur fundamentals.
Hi Vikas,
Thanks for dropping a long comment.
I'd like to tell you the following,
The capacitor just acts as a power factor corrector (PFC). This increases PF to 1(or near 1) and reduces the load current (I). Reducing the current, the voltage loss(& heat loss) among the conduction wires becomes less. For example if PF=0.50 earlier and now PF=1.00 after adding PFC, then current heat loss will be 25% of previous.
Another advantage of adding capacitor is smooth running of inductive loads like fans. If you have an inverter/UPS setup then run in battery mode and light a Tubelight(ballast one) and a ceiling fan, then you connect the PFC to plug and you'll notice much improvement in tube's light and fan's speed.
This is not about decreasing the energy out devices eat. This saves the energy that are charged but not consumes by the appliances.
hy arup
i am sajid from pakistan.plz resolve my problam.main ne 4.5uf ka capasitor lgaya he wo work kare ka oil based nahn he tell me
More and more often lately, we see glowing reports on TV and in the popular press about the latest inventor who's managed to come up with a device that will save you anything from 25 to 35% on your electricity bill. We should not be alarmed (apparently) to discover that most of the "inventors" of these revolutionary products seem to be uneducated and are unattached to any research arm of a university or similar. Almost all advertised 'power savers' on the Net are a scam - 100% of plug-in 'power savers' are a scam.
More and more often lately, we see glowing reports on TV and in the popular press about the latest inventor who's managed to come up with a device that will save you anything from 25 to 35% on your electricity bill. We should not be alarmed (apparently) to discover that most of the "inventors" of these revolutionary products seem to be uneducated and are unattached to any research arm of a university or similar. Almost all advertised 'power savers' on the Net are a scam - 100% of plug-in 'power savers' are a
Sir,
as per my knowledge capacitor will not reduce the bill as bill is based on for domestic purpose =V* I * power-factor * hr. so if you increase the power factor then current will reduce and so the result will be the same, actually in commercial available power saver they are clipping the pick of the voltage and thus reduce the rms voltage of the supply now our bill is directly proportional to voltage these shows the reduction in the bill but in actual it is just lowering the % of input voltage only. Correct me if I am wrong.
can i placed it on the main line where from the current distribute in the hole house ?
sir I have read all of this articles... I tried this at home but I have doubt if it is dangerous or not.. because a voltage was stored in it.. can i use a bleeder resistor just to discharge it?
Video tutorial please, if you may for those who are into green and don't know the way of electricity. Arup, you are an amazing green saviour. Please help me. My cooler turns my KW meter spins like a tornado. Of course you will be compensate for your cause. Thanks.
Blessing.
Can I connect the capacitor directly across the distribution box mains contact breaker instead of in the plug. If so will I realise the same benefits. Will I need a higher value capacitor
hi..
i am electronic student in india(tamilnadu).i like to do this in project so i want to full details above the pover saver details.
pls mail me.....
hai
Arup basak
I am from bangalore,since my childhood i was keen on knowing about electronics gone through lots of books and magazines.u have givien a good insight into power factor corrector circuit,my suggestion is we do use power for TV's and PC's ,lighting systems and heaters too, why cant some better circuit for reducing the power bills.
please do reply.
regards