The circuits in this Instructable use very high voltages and currents.
These currents and voltages are deadly! You can easily hurt yourself, as well. Build this circuit at your own risk.
This type of high frequency high voltage current is used in surgical cauterizers. So if you get shocked you will burn yourself and cut your flesh. There is also a considerable fire hazard from the circuit.
Use the Nikolai Tesla's safety techniques when working with high voltages:
1. Only use one hand (put your other hand on your lap or pocket)
2. Wear insulating shoes
3. Use a dead man stick or insulated pliers when touching or manipulating the circuit.
4. Use a power bar with a thermal fuse rather than sticking the circuit directly in the socket. This will limit the current that will go through your body.
5. When soldering, disconnect the circuit from the power outlet.
Generally, in electricity it is the the current that kills. if the currents are low there is little danger even if the voltages are very high (think of Tesla holding the his Tesla coil).
This circuit has high currents which makes it considerably dangerous.
a 65W CFL can deliver 65mA easily (65W/1000v).
And if you look at the picture below, at greater than 50mA the little guy is dead.