[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [TCML] Frequencies
Not true at all, about powering a small Tesla Coil. It does a very fine job,
up to about 3 inch arcs with just one coil. With two coils in parallel, I
have gotten arcs or sparks whichever you want to call them, of more than 5".
I have built more than one and there are some fine plans, including a small
rotary spark gap in the book, The Gadgeteer's GoldMine by Gordon McComb. I
am not related to Mr; McComb or even ever met him or corresponded with him.
I just think it is a very good and interesting book with many fine projects
for high voltage experimenters.
Paul
Think Positive
----- Original Message -----
From: gary350@xxxxxxxxxxxxx
To: Tesla Coil Mailing List
Sent: Sunday, October 11, 2009 17:00
Subject: Re: [TCML] Frequencies
A 555 timer works great for an ignition coil. I built mine with variable
freq adjustment. As the freq increases the ignition coil output increases
up to a certain freq then it levels off then it starts dropping. I don't
have a freq counter so as long as I can still here it then the freq should
be below 12K I can't hear much above that. I am guessing 5K is where it
reaches max output. Down side to the ignition coil is, it makes a nice 1/2"
spark all by its self running on 12 volts DC but the ignition coil is
worthless for powering a TC.
-----Original Message-----
From: Rhys Sage <rhys_sage@xxxxxxxxx>
Sent: Oct 11, 2009 2:23 AM
To: tesla@xxxxxxxxxx
Subject: [TCML] Frequencies
I've considered a whole load of alternatives for driving the ignition coil.
I decided in the end to play safe and optically isolate the coil from the
555 pulse generator. To that end I'll employ an IR emitter-detector pair.
I discovered a capacitor plus a resistor across the coil should, according
to one website, foil any surges from the coil while a diode in series
should foil any kickback.
I have a pretty mundane coil at the moment. It's a cheapie coil that I
bought just to try things with. I expect it won't be powerful enough to use
for anything other than experimentation - which is fine right now.
400 hertz is quite slow. Using a simple electric motor running at 6000 rpm
and a spinning disk with 4 segments of alternate block and clear combined
with an interrupter would give me about 200 pulses a second. Doubling the
segments to 8 would give 400 hertz. That's achievable with a simple piece
of cardboard!
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla