DIY SOLID STATE TESLA COIL (SSTC) / (wireless power transmission to CFL bulb ).

( I Will upload video and pics soon)

What is a SSTC  ?

A SSTC is an air-cored transformer that steps up a very low DC voltage to a very high AC voltage. This creates an electromagnetic field around the coil that is capable of lighting up fluorescent and neon light bulbs without any wires connected. It is fairly similar to a Tesla Coil.


In this post, I will show you how to build a small SSTC and will also give an explanation as to how it works.

Step 1: Parts List

For this project you may need to do a little shopping. The total cost for the project can easily be kept under 1000 rs.

Items Needed:

-   At least a 8 inch long tube that's 1.5 in diameter, it must be hollow and non-conductive! I used a

     piece of PVC pipe. - 25 rs

-   A platform to mount everything onto (wooden or plastic ).

-   Approximately 1 mtr of 14 AWG wire. - ~30 rs

-   250 grams of 35 AWG magnet  wire . -140 rs

-   Some sort of round sphere or coke tin to use as a top load (connect to upper end of secondary coil)

-   One 50,000 (50k or 47K also works) ohm resistor. - 10 rs

-   Two UF4007 diodes ( IN4007 will not work). - 10 rs

-   One TIP31C   transistor.  - 20 rs

-   Transistor heat sink & heat sink compound paste. ( use big heat sink to keep transistor safe)

experiment with different transistors, most transistors should work as long as they are NPN type. However, if the transistor gets hot to the touch you may want to consider the TIP31C, the TIP31C should only get warm to the touch unless you exceed 16 volts  (@ 0.5amp/500 mA  of current) . The resistor value can also be changed, it merely limits the current going into the transistor so a change of a few thousand ohms either way should not make much of a difference. If your transistor feels hot to the touch you may want to consider increasing the value of the resistor.

I would also recommend using a piece of pipe that's several inches longer than what is required, you can always cut down the pipe to the right size after wrapping the secondary coil.

If TIP31C  burns out frequently and u wish to increase power & range replace TIP31c Transistor with 2N3055 NPN transistor  and increase voltage upto 25v @ 750 mA.

To improve the performance much higer I used 2N3055 @ 25V, 1 Amp.  ( use good quality heat sink to keep transistor cool.)

CIRCUIT

.

This design is very simple and only uses four components! It is also very versatile and the input voltage can be as low as 5 volts or higher than 18 volts if the transistor is attached to a good heat sink.

------THEORY OF OPERATION------

-   5 to 18 volts is fed into the circuit, a resistor (R1) is placed before the Base pin of the transistor in order to limit the amount of current the pin receives. If too much current is allowed into the Base pin the transistor can produce excessive heat and fail.

-   One end of the secondary (L2) is connected to the Base pin of the transistor in order to feed it with oscillations. The two diodes (D1 and D2) prevent the oscillations from going directly to ground. (Learn more about oscillations and why they're important, below).

-   The transistor is made up of three pins: the Collector, the Emitter, and the Base. If you were to think of the transistor as a garden hose spigot , the Collector would be the reservoir of water. The Emitter would be the hose and the Base would be the valve that would allow water from the reservoir (Collector) to the hose (Emitter). The valve (Base) is in the closed position (no water flowing) until it is given a little nudge. When it receives a nudge, the valve opens and a lot of water is allowed to flow from the reservoir through the hose as long as the valve is still getting a nudge. However, as soon as the nudge goes away the valve will close, cutting off the water from the reservoir to the hose until the valve gets another nudge.

-   When the Base receives a little bit of current, it closes the circuit and electricity is allowed to flow through the primary coil (L1). However, electricity likes to take the path of least resistance so when the electricity is allowed to flow from the collector to the emitter (~0 ohm resistance) it will stop flowing to the base because there is 47,000 ohms ( i used 47 k resisitor) of resistance there. When the electricity stops flowing to the base, the base will open up the circuit again until the resistor offers less resistance than the Collector-Emitter path. This cycle repeats itself many times a second.

-   The primary coil collapses when the electricity stops flowing through it, when this happens, the secondary coil picks up the magnetic field and converts it back into voltage which gets stepped up to around a thousand volts in the process. The top load acts as a capacitor and increases the output from the secondary causing electrons in the air to become excited.

-   Finally, the oscillations from the secondary coil are fed back into the transistor in order to 'tune' or achieve maximum output.

To buy high power solid state tesla coil contact : harikrishna0501@gmail.com