I am trying to build an ultrasound or near ultrasound cleaning device using a CD4011 as pulse generator and two tip120, each one has the Base terminal connected to the outputs.
Whenever one turns on the other is off an vice versa.
However, i do have a problem: the man who gave me the circuit told me i do need two coils and strong magnets. He told me to do 200+200 turns with a common connector in the middle, aiming towards agitating a recipient full of cleaner.
I am feeding this circuit between 12v and 24v, the cd4011 itself has its own 7805 and coil in series regulator, to prevent power noise to get into the ic.
I have several problems to resolve and i do not know how:
- I do need to find out the proper thinkness of the wire for the likely current and frequency,
- I do need to find out the proper cores for the coils. Theoretically there should be a magnet in front of them which they would reject when energized, causing agitation in the recipient;
I have the idea of using a basculating plate held in the middle by bushings, some sort of silicon as centering spring and placing two coils below it and two small metal pieces to get the plate oscillating, all of that below water and the coils placed into a watertight container below, this whole system would work deep under cleaning solution. In that caise, should my idea be feasible, what kind of cores are better for frequencies between 15.000 and 20.000 oscillations per second? a friend of mine tells me i could use iron transformer cores but some others tells me i'd need a sort of iron and ferrite core.
Also, if i wish to make it more powerful replacing the tip120 by 2n3055 and enlarging the coils and cores into the next big size, what would turns, wire thickness and core material and size be?
