Squeeze out the batteries all the "juice"

Batteries, they can be found, without exception, in every home, and they serve a pretty decent time. Still, there comes a time when shrunken the battery should be replaced by a new one. And then the question arises, what to do with the old?

In good, you have to pass it to a special collection point, as the throw with the ordinary it can not refuse. But not every city has such a collection point, and in such a battery has a residual charge which can still be used, for example, to collect a flashlight. And how to do it and I'll tell you in this article.

Preparation of material for Flashlight

So we were left with the residual battery charge and to use it to us, for example, for LED, you need to collect a simple circuit with a converter.

To do this we need to contact you:

1. Ferrite;

2. Transistor, will fit almost any;

3. A little insulated wire;

4. Resistor of 1 k;

5. Light-emitting diode;

6. Grounded battery;

7. Soldering iron with solder and a half hour of free time.

Practically all the details can be found, for example, in an old broken energy saving lamps.

With its management board can remove the ferrite ring and the transistor.

Assembling the torch

The most important stage of our assembly is a winding wire with a ferrite core. To this end we take two wires in insulation (available in varnish) having a diameter of 0.1 mm2 to 0.3 mm2, twisting the ends as follows:

Is threaded through the coiled ends of the ferrite ring and begin to wind the wire.

You should have about 20 turns, can be a little more or less.

After that, we need to connect the beginning of the first coil to the second end, and you can connect:

And for good contact solder them together.

Everything now proceed to the assembly diagram. Since it is very simple, I think, no problems, this operation does not cause. Most importantly, connect the LED correctly. You should get something like this:

This scheme starts to operate successfully at a voltage of the power source (batteries), ranging from 0.44 volts, allowing the battery to discharge shrunken still further.

If you have an old-style germanium transistors, then using it in the present scheme, you will be able to more effectively use the remaining charge in the battery. And discharging it almost completely.

The resulting product, you may well be able to place in the old building from, for example, a dummy lamp. Since this structure is very simple, you can collect it even with your child.

Commenting laykaem, we subscribe. Thank you for your attention!