The important thing is the image below. I want to know how it works. Here's what I understand so far.
First I'll identify the pieces:
-The blue "packet" is a capacitor. Its a \$ 0.030 \mu F\$ with 400 V Capacitor.
-The resistance near to LED is a \$560 \Omega\$ resistor.
-The resistor closest to the black diode (close to the capacitor) is a \$22M\Omega\$ resistor; so is the one next to it.
-The resistor next to the transformer is a \$1.2 k \Omega \$ resistor.
-There is a resistor of \$ 1.2k\Omega\$ stuffed in between the transformer and the diode.
-There is a transistor below the transformer.
-There is a diode between the capacitor and the transformer.
My theory of how this works:
The batteries provide a voltage and this is fed to the transistor. The transistor provides an alternating voltage which is crucial to the transformer. The transformer then intensifies the voltage but this comes out as an alternating current, which is why we need a diode. The diode is connecting to the capacitor. That's all I can tell.
What is the function of the capacitor in this circuit and why is it connected to the diode?
My two copper rackets (see first figure) discharge when they hit each other. How does this work?
What function do the resistors have? Are they in series or in parallel?
The product says it could generate a >1000V. Why isn't this harmful to a human being?
Those are my main questions up to now.