Square Wave Generator (For Resonant Air-Gap Transformer)
I've decided on a project for the new year that is ~~less likely to lead to sterilization~~ better than my old project (which was a homebrew x-ray machine). My new project is something to wirelessly power some LEDs. I've done some research (read as, YES NACHO, I ALREADY GOOGLED IT!) and looked at puffin's unfinished instructable on IPT (it helped a lot).
What I've found out is that to start, I will need something to generate a square wave AC signal. The circuit I decided on is a 555 multivibrator. One of my friends let me copy the schematic from his notebook. I've got a couple of questions still (and I hoped you guys could help).
1st. (Dumb Question) That symbol in the second picture is ground, right?
2nd. Once I build the multivibrator, how would I hook it up with the rest of the circuitry for my air gap transformer? (ie. where would the outputs on the circuit be?)
3rd. What does that symbol (it looks like it should just be a resistor symbol), next to the words speaker or other circuit mean? Is it just a resistor or is it actually the outputs I've been looking for?
4th. Is there anyone who has successfully done a project like this before (recently)?
Thanks in advance for any help.