Okay, so it has taken me much more time to get to this than I had hoped! I have spent today figuring out parts and here is what I have in my shopping cart:
4.7nF/50V Radial Ceramic Disc Capacitor DE1428 1971 $0.09 $0.45
100nF/50V Radial Ceramic Disc Capacitor DE1444 10391 $0.12 $0.60
10k Ohm 0.5W Carbon Film Resistor ±5% 103 DE2954 1852 $0.12 $0.61
220k Ohm 0.5W Carbon Film Resistor ±5% M22 224 DE2970 682 $0.12 $0.61
NE555P General Purpose Bipolar Timer 555 NE555 DE1733 1804 $0.25 $1.25
Small Signal Diode 100V/200mA Fairchild or NXP 1N4148 E3230 2539 $0.12 $0.60
Subminiature DIP DPDT Relay 12V - 2A@250VAC AZ822-2C-12DSE DE2721 20 $2.35 $4.70
MOSFET Transistor N-Channel 150V/43A IRF3415 DE3564 45 $2.61 $2.61
SPDT Snap-Action Standard Micro Switch with Roller Lever $1.35 $2.70
(Standard micro switch. Specifications: • Current rating: 10A @ 125 VAC and 250 VAC • Housing dimensions: 28.8 mm L x 15.8 mm W x 10.3 mm D • Contacts: 3 • Approval: UL.)
I wasn't so sure about the specs on the 555, the relay and the switches, but I think they will work.
You might also notice that I have a MOSFET thrown in there.... this is for another question I have. Currently the drill has a MOSFET connected to the triger that controls the voltage. I'd like to be able to control the voltage and adjust it easier than sinking a hot paperclip through the trigger to keep it where it needs to be. So I was hoping to incorporate a MOSFET and some sort of dial adjuster (a potentiometer?), but so far I have not found anything that is that simple. I guess I am missing something, but so far I can't figure it out. (I'm guessing this would work as the drill is a 120volt, 3.5 amp drill 0-1300 rpm)
Also, regarding the 12v power supply, does this need to be ac or dc or does it matter. Finally, I have a remote control (from the garage door which operates on 24v ac, which I would LOVE to incorporate into this schematic. Is there any way I can make this a 24v ac system so I can just plug it into the system?
Okay, thank you again for all your help!!!
I am getting really excited to get this going. I have been playing with the garage door circuits as well, to see if I can get it working. So far I have been able to get one orange lead to fire up, but only with a continual button push (as the rpm sensor is not happy about not having any current through it!) Speaking of, how would I set up a current of .7v ac to flow through it from the 120v ac that comes in? I saw that someone used an invertor oscillator and a piezo buzzer to do this, but I don't think having an extra noise in the tv cabinet would work out that well! - this is actually not that important if I can get the other circuit working... just more of interest in how things work to me!
Thanks again!!!
Adam