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Bestek 1000W Power Inverter Review – part1/4

I unbox and test out the Bestek 1000W Power Inverter and give my opinions on whether this is a product you should consider purchasing.

This inverter can be found for purchase at the following location:

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Make an inverter : DIY Experiments #2 – Power AC devices with a battery / homemade inverter

• Link of our Facebook page :

• Text of the video :

Hi everyone, today we’ll show you how to make an inverter! An inverter provides power to objects working on alternating current with only a 12 V battery. First we’ll test our inverter on different devices then we’ll show you how to create yours.
Let’s start with a simple test. We plug the terminals on the 12 V battery and then we switch on the inverter. The bulb, which normally works on AC with 230V and consumes 25 Watt, is now on as if it was plugged in the power outlet! Instead of using high consumption light bulbs, we can use economic light bulbs, here is a test with 36W, and as you see it works perfectly. Here is another test with our inverter; we will recharge at the same time an iPod, an iPhone and an iPad. When we switch on, there is enough energy remaining to light up a bulb. The inverter is compatible with every switching-mode power supply, even the most powerful ones. Now we will try to supply a stereo. I turn up the volume gradually. So obviously we can’t reach the volume’s maximum because the inverter can give only up to approximately 30 Watt while the stereo reaches 260 Watt when on maximum volume. There is black out? With the inverter we can supply energy to your room’s lamp. The soldering iron’s cable is too small? With the inverter, the cables are never too small !
Our inverter is made out of 3 parts:
– We have a 50 Hz oscillator
– 2 MOSFET transistors that amplify the signals
– And a transformer
We first have to make the oscillator which can be considered as an integral component. The positive terminal is placed in the upper position, while the negative one is in the lower position. It consumes 30mA under a 12 V current. On the sides it supplies a positive current on one side and a zero current on the other side, and vice-versa, with the frequency that we wish. To have a 50 or 60 Hz frequency, the mains frequency, we will give the specifications of the capacitors and resistances that we used at the end of the video.
As for the transistors, we can consider it as an amplifier with 3 terminals: base collector and emitter. For the transistor that we are using, when there is a small current between the base and the transmitter, a much powerful current can flow between the collector and the emitter. For example, the current that flows through this resistance would have never been able to light the bulb, but thanks to the transistor, the signal that I’m doing can be reproduced in the bulb.
In our inverter we use MOSFET transistors. They act like the other transistors except that their terminals are named Gate (G), Drain (D) and Source (S). The current that must flow between G and S to activate D and S can be very low. As long as there is more than about 4V between G and S, the other circuit is activated. As you can see the current that can flow through the body is enough to activate the MOSFET transistor!
We use MOSFET transistor for our inverter because they need very low voltage between G and S to be activated which doesn’t affect the oscillator’s frequency. Since we use recycled components only, the MOSFETs even from different objects have relatively the same specifications, which is very important since the transistor have to be in perfect sync: there should be neither any dead time nor a time when both transistors are activated. We connect the two sides of the oscillator to the transistor’s G terminals. Since the frequency is 50 or 60Hz, each hundredth of a second the activated transistor changes.
The transformer must have a 1 to 19 ratio so we can go from 12 V to 230 V, twice less to reach 110V. Since the primary coils are in opposite directions, the direction in which the induced current in the secondary coil flows is opposed to the one from either one of the primary coils. We have a 230 V and 50 Hz current, not really sinusoidal but ideal for supplying mains powered devices.
Other tests:
A last test with 24 V, this way we can have an 85 Watt power tested here with 2 bulbs: a 60 Watt bulb and a 25 Watt bulb fully lit. However, with 24 V the voltage isn’t stable and we can only obtain 230 V when we consume 85 Watt, and less we consume more the voltage is increasing, it can go up to 600 V on open circuit.
We have to supply the circuit with 12 V which consumes 500 mA open and up to 7 A in short circuit with 230 V; this is why we use a big lead battery so that we can have a range of several hours. We have for example a range of 5 hours and a half with this 10 Watt bulb; we can also supply a 230 V laptop stereo with only two 9 V batteries, I switch it on and it works !

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Lead acid battery restoration desulfation recondition in 5 minutes for $ 1.oo epsom salt – battery

If the solar panels, wind turbines, and different extensile energy devices can be if you use anybody you are correct that you can use to save power and alternative energy systems where the use of deep recycle batteries, this course
will show you.Battery Reconditioning is program step easy to follow steps on the subject of the most complete to refresh your used battery to make it working
Use security glasses : Easy Lead acid battery desulfation recondition in house garage with regular EPSOM salt
(lead-acid battery : 90 % can be reconditionned)

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Do Desulfators Restore Amp-Hours? Lead Acid Battery experiment

so i left my desulfator connected to this Trojan T-105 golf cart battery for 2 months and it seems to have no effects.

previous video

the discharge results in that video where 52.9 AH the results in this video where 53.5 AH. the differance is just the normal variations between charges.

so this does confirm my suspicion that desulfators might not do much, but it needs several more in-depth tests to show for sure. after all the desulfator i got was cheep and it arrived broken so i had to fix it.

music: Gremlins 2 on the Nintendo Entertainment System

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Lead Acid Battery Reconditioning

This video is to create awareness about Lead acid battery recycling.

# Don't buy local made reconditioned batteries, which are made in unsafe environment.

# Don't sell your battery to unauthorized battery dealers

#Lead is dangerous and must be handled by professionals only.

For More info


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Lead acid battery restoration desulfation recondition in 5 minutes for $ 1.oo epsom salt

Use security glasses : Easy Lead acid battery desulfation recondition in house garage with regular EPSOM salt
(lead-acid battery : 90 % can be reconditionned)

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How to bring a Dead battery back to life revive / rejuvenate / fix rechargeable NiCd battery

How to recharge a dead battery!
Quick and EASY!!!
Quickly rejuvenate NiCd battery for free by yourself
Super Easy
Don't throw your drill away yet!!!

save some money!
If you need a cheap spare You can even buy used dead batteries on ebay to rejuvenate for little to nothing compared to a a new one, great way to get a cheap spare!

How to Quickly rejuvenate NiCd battery
How to revive / rejuvenate / fix rechargeable NiCd battery for cordless drill
Recondition/Repair/Revive cordless tool batteries to use again.
How to recondition your cordless tool battery yourself.

How to recharge My NiCad battery didn't work for years and now it works great.
Bring your battery back to life!

My Nickel Cadmium battery won't charge.

How do I charge my battery
rejuvenate a dead battery
rejuvenating a dead battery
Battery won't work?
Old dead battery
saving an old battery
salvaging a Nickel Cadmium battery
NiCad Repair how to zap a battery back to life to use again.
revive / rejuvenate / fix rechargeable NiCd battery
I got a bad cordless drill I want to fix
Ni-Cd battery fix for free
How to recharge unchargeable batteries
Recondition NiCad batteries free of charge with other batteries
fixing my Nicd battery
Ryobi battery is dead
Ryobi cordless drill dewalt cordless drill
a handyman fix My drill won't run because of a dead battery
How to recondition your cordless tool battery yourself.

Don't pay walmart, HomeDepot / Home Depot Menards or any other outlet more for a battery, when yours can still be good!

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Lead Acid Battery Desulfation Using Epsom Salt –Add Solution to Dead Interstate battery Part 2 of 6

Using Epsom Salt (Magnesium Sulfate) to Desulfate a Lead Acid Battery that has a dead cell.

Table of contents:
Part 1: Initial addition of the chemicals
Part 2: Adding Solution to Dead Interstate Megatron battery
Part 3: First Tests after Charging
Part 4: After Overnight Full Charge + Demoing Capacitive Desulfating Charger
Part 5: Using one of our custom built Capacitive Chargers to Pulse Desulfate Further.
Part 6: Interstate Battery after 1 week on Desulfating Charger + Solution

Build it Yourself Recommended Parts List!
12 Hr Timer:
Multimeter/Volt Meter:
Extension Cord:

K-Man Scooters & Electric Cars

This is a important video on desulfation of lead acid batteries. It is a very important method, to extend the life and desulfate using Epson salt and pulse technology to increase the amps capacity and amp and cold cranking amp or cca of a sulfate sulfated lead acid battery. Lead-Acid Batteries can become sulfated or build up sulfate over time, requiring desulfation to correct the sulfate problem of the battery. the use of a epson salt and capacitive battery charger can correct this disastrous. Just make sure you do you desulfate your lead-acid batteries carefully. Using a capacitive battery charger to pulse the battery can help break down the sulfate and restore the amps and cold cranking amps. This method of desulfation is very important. Desulfate and recycle! Sulfate build up is bad! Mmmmkay! This method is also a good way to recycle lead acid batteries, as recycling is good, ok!

Please watch: "Tesla Accident-Car Summoned into Semi Trailer— How It Most Likely Happened! Tesla Autopilot Crash"