I'm an electronics neophyte, looking for a transformer, to generate a spot of plasma at the end of two leads. In particular, I am trying to build the circuit here:
This circuit is published in a couple of magazines. The last component I need to finish the circuit is the transformer that converts 12vDC to “a few kv” at kilohertz frequencies. The author calls the transformer a Tesla Inductor, and suggests obtaining one by pulling one out of a furnace ignition system. I have had no luck finding a used furnace ignition system that has a transformer.
I would buy one new, but neither the schematic nor the articles detail the specifications of the transformer, and I do not know enough to infer them.
I have figured out that I need a low current, high voltage transformer. This may be known as an ignition, or spark, transformer. I think I need to know at least the impedance and operating frequency, as I have inferred the input voltage (12) and input current (10 ma) from the 555 timer. I do not know if I need the winding ratio, wind count, resistance, or anything else.
Thanks for any help!