Here is the simplest circuit for generating high voltage.
Here i will show how to make mini tesla coil (salyer exciter circuit).
Step 1: DESCRIPTION
Mini tesla coil(slayer exciter circuit) is a air cored step up transformer which step up the low voltage dc to high voltage ac by creating electromagnetic field around it neon lamps,CFL ,etc gets
Step 2: Working of This Circuit
When the base of the transistor gets small amount of current the circuit is closed and electricity is able to flow from emitter to collector which is connected to the primary coil. as due to the presence of 50,000 resistor the electricity is not able to flow and the circuit opens and path of primary coil disconnects hence this cycle occurs several times in one second which result into formation of fluctaing current in primary coil which is steps up more than 50 to 75 times by air cored transformer. finally the oscillations from secondary coil fed back into transistor's base in order to achieve maximum output from this circuit.
Step 3: Things Needed to Build It.
To make this mini tesla coil(slayer exciter) following things are needed:-
1.one breadboard of pcb
2.nonconducting tube (pvc tube)
3. 30AWG enamel wire(one can easily get from transformer)
4. 14 to 15 AWG wire(one can easily get from transformer)
5.some connecting wires
6.aluminum foil paper for top load(if you want to keep)
7.power source(5 to 18v dc)
9.One Resistor (50k)
10.Two diodes (IN4007)
11.one heat sink for transistor if your transistor is getting hot quickly)
12.one small low power led if you want to connect it in circuit( led should be connected in series with the circuit)
Step 4: Making the Secondary Coil
with 30AWG enamel wire wound around 400 to 560 turns(this is not critical measures it can be little less or little more than this turns) on noncounducting tube (pvc tube)but try to avoid gaps between two turns.
Step 5: Making the Primary Coil
wound around 8 turns(this is not critical measures it can some more or some less) on the secondary coil.
Step 6: Making the Circuit
as per the diagram in first picture the circuit have to made on the breadboard(pcb)
Step 7: Making All the Connections
Firstly connect the secondary coil one end (that side's end on which side the primary coil is wounded) to the base of the transistor where resistor and diode are also meeting.
Secondly connect the two terminals of the primary coil to the collector and another to the positive terminal of power source where resistor is also connected( if this circuit do not work in this arrangement then most common error is to interchange the connections of the the primary coil)
Thirdly connect the top load on the non conducting tube where one bare end is present which is not connected anywhere in the circuit(if you wishes to connect topload)
Fourthly connect the power source as positive terminal to the diode's starting and transistor's emitter and negative terminal to the primary coil one end and resistor's end.
If you wishes to connect switch you can add it in series with the circuit.
Your high voltage mini Tesla coil (slayer exciter circuit) is ready now put switch on and enjoy.
THIS MACHINE CREATES HIGH VOLTAGE AC CURRENT WHICH IS DANGEROUS FOR ELECTRONIC GADGETS AND COMPONENTS SO PLEASE AVOID ANY INSTRUMENT BRINGING NEAR IT WHEN IT IS ON .
AS IT GENERATES HIGH VOLTAGE AC CURRENT PLEASE DO NOT TOUCH IT WHEN IT IS ON IN CASE OF ANY DAMAGE OR ACCIDENT I AM NOT RESPONSIBLE OF IT . THIS MACHINE DO NOT HAVE BRAIN OR COMMON SENSE USE YOUR BRAIN AND COMMON SENSE .
Step 8: Testing It
I hope you enjoyed it.And be safe, do not touch it when it is on.