220 V manual generator from a microwave

With the help of this small pocket generator, you can immediately charge not one, but several cell phones, light an LED lamp, and there are other possible uses for it that didn’t occur to me. It produces a pure sinusoidal voltage of the order of 120-230 V (depending on the rotation speed) and produces power in the region of 3-5 W with a frequency of 50 Hz, which is important. In fact, it is a micro power plant in your pocket. Take it on a hike and you will have a 100% source that will never run out.

Will need

Tray drive from microwave oven. If not, then buy it on AliExpress (link)

It spins the plate and runs on mains voltage. In appearance, this is a flat electric motor with a shaft shifted from the center - this is due to the gearbox built into it. Its whole feature is that it also works in the opposite direction: when rotated, it generates electric current.

For the body we will use a plastic jar of cream.

How to make a 220 V manual generator

We drill a hole in the cover for the electric motor shaft.


We are trying to install it there, but we are not securing it yet.

You need to find a handle from the amplifier; it will fit well on the shaft, since the shape of the recesses is very similar.

We try to rotate the shaft, if everything goes easily, then the handle is sitting normally.

We solder a resistor with a resistance of 100-200 kOhm in series to the LED. We put on the heat shrink and blow it with a hairdryer.

Let's make a hole in the lid for Light-emitting diode. It will show the presence of work and voltage release.

Solder the contacts to the generator.

Let's take an adapter plug as a socket.

Use a soldering iron to make holes for its contacts.

Let's connect to the contacts and insulate them.

We install it in place.

Solder the output to the generator.

We do the assembly. We put all the elements on epoxy glue so that everything is held securely. We close the case.

To make it easier to rotate the dynamo machine, we will make a handle. To do this, cut a long strip of metal.

Let's make a hole for the handle.


The ballpoint pen cap will act as a hinge.

Let's saw off the edge.

Assembling the handle.

We glue it with epoxy glue.

Checking the work - Light-emitting diode glows.

We test it on a real load. Its role will be a 220V light bulb.

We connect it, it lights up well.

Now we try to charge the phone.

Charging is in progress. And now all together.

There is enough power!
Thanks to the gearbox built into the engine, there is no need to rotate the shaft at high speed. Calm rotation with a measured frequency will not put much strain on your hands, which allows you to power your loads for a long time.

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