This is a mini spark gap tesla coil(SGTC),it is small but full funtion.The most important thing is that it can touch and don’t worry about the electric shock injury.The original intention that we design this decive,plz reference The following article

make a Mini table SGTC tesla coil Spark gap Tesla coil

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OK,let us start making it

 

Step1

Scattered parts

Foam is buffered at the bottom

step2

The transformer coil needs to be installed according to the picture, and the rough copper wire is the primary position.

Please look at the annotation on the picture

step3

High voltage diode

step4

Power indicator lamp,led long foot is +

step5

Power socket and switch

step6

Igniter socket

step7

the Igniter

step8

High voltage signal generator(the picture is old vesion,now the generator you got maybe bigger than this old one,but they are same,in the back there is label “+”,”-” and “”out“”)

red wire is +，black wire is –

soldering to the right place marked in picture below

ok,the board finished

step9

now need connect the Primary coil and secondary coil to this board

first glue the bottom shell

 

The primary coil winds three turns(Although the bottom is reserved for 4 turns, but please winds only 3 turns,and must Clockwise)

 

 

Now solder the “IN” “Out” “L2”

The soldering place  is best to do insulation treatment,
Prevent discharge(Cover exposed wires with tape)

 

 

Ok,finished all the soldering.

About the power suply:

you can use any DC12v power suply(make sure the out put current is 1A-2A)

For example:

 

 

if you don’t want to use the plug,you can solder two wire directly to the board,and connect them to your DC12v power

 

 

ok,all is done,12v dc power,you can use it now(plz use it in dark place,you can see the spark and arc)

find a Incandescent lamp

  

The picture below is another type,but the same effect,just the Different primary coils