how to : make a \"joule thief\" and create zombie batteries for more power after death

Almost all of the household gadgets we have run on 1.
5 volt size battery.
Wouldn\'t it be great if you could reuse these dead AA, AAA and D batteries after they pass through?
It turns out that you can make a simple circuit called the \"joules thief\" to revive the undead meat of your late battery and make the zombie battery.
Material Step 1: Prepare the transistor and place the transistor on a table facing up.
To facilitate welding, the pins of the transistor are expanded.
Bend the middle pin back and bend it up behind the black plastic box of the transistor.
Step 2: placing the LED is a polarized element.
This means that it will only work if it is oriented in the right direction in our circuit.
The positive lead of the LED is usually long.
Below, the positive lead is on the left and the negative lead is on the right.
Place the LED on the transistor, as shown in the following figure, with the front facing to the right.
Now weld the LED to the transistor.
Step 3: Place one end of the resistor on the middle pin of the transistor.
Make sure they stay in touch when you weld the components.
Step 4: wrap the coil where dark magic happens.
Wrap two enameled wires around the edge of the ferrite body core.
More wires mean more powerful joules thieves and brighter LED.
After wrapping the core, there should be two pairs of end lines.
Connect a pair together, as shown on the right side of the image below.
Separate the other pair as shown on the left side of the following figure.
Step 5: connect CoilRemember with a lighter and burn the enamel at the end of the thin line.
With the burning and exposure of the wire, weld a free coil wire to a 1k resistor.
Weld another free coil wire to the front of the LED.
Below, we have to weld the coil line at the intersection of the transistor and the positive foot LED.
Below, please note that the end of the green enameled wire is exposed due to the burning of the enamel.
Step 6: the solder clip is now done by the main joules thief and we can attach a handy battery clip.
The Joules thief will work without a battery clamp, but only if you fix the wires in place with your fingers.
The winding end of the coil is directly connected to the positive battery wire.
Make sure both wires in the pair are welded to the red line.
The black battery wire is connected to the negative pole of the LED.
For those of you who need a schematic, this is what we just built: when the current flows through the coil and around the magnet, it creates a magnetic field (EMF).
When the coil is not powered on, the magnetic field crashes and generates an EMF kick in the online coil that is higher than the supply voltage.
The final power is stored on site and released in the form of a large burst, flashing LED.
The magnetic field oscillates so fast that the flashing LED appears solid to the naked eye.
Now, just plug your battery into the circuit and enjoy the horrible non-blinking glow that undead watch you make while you sleep.
When paired with the light sensor, this item is perfect for night lighting and even garden trail lights.
What can your zombie battery light up?
Post your thoughts and discussions on the forum.