Editing Super Capacitor (section)

==Sonicator==
[https://www.youtube.com/watch?v=1EH6atYydBc DIY Home Made Ultra Sonic Cleaner "UNDER $35 BUCKS"] - Uses a sander, does 10k rpms. *No a sonicator*.

* if you want to make a real ultrasonic device you can hack one of them pet control sonic devices to generate the frequency an hooking it up to a larger high frequency generator
* THIS IS NOT ULTRASONIC.  You need much, much higher frequencies — 20 kHz to 400kHz (or 1.2 million rpm to 2.4 million rpm) to get ULTRAsonic.  The higher frequency range has EVERYTHING to do with the cleaning effectivity.
* the tank needs to be metallic because the plastic absorbs the vibrations...
* there is a very good [http://www.instructables.com/id/Home-Made-Ultrasonic-Cleaning-Tank/ DIY on intructables made by grenoble].
* Great explanation!!! Just to expound, the "machine gun" process is called cavitation for the all my science homies in the house. Non-inertial cavitation to be more exact. The cleaning effect is actually a result of an implosion when the soundwave smashes into the object and creates a low pressure zone. And BTW, I love washing silverware in my ultrasonic cleaner *super lazy + super clean
* The ultrasonic transducers used for cleaning tanks are a specialist item and are not likely to be found in your average hobbyist catalogues. There are several types sold on ebay though.
* You should also not remain in the area for any length of time. Even though you can't 'hear' the ultrasound, it's still vibrating your eardrum and prolonged exposure will damage your hearing.
* Ultrasonic transducers are rated by frequency and wattage. The item you saw in that catalogue is just a 'buzzer' that makes a 'beep' sound when a voltage is applied. (that's no use for this application)

What are these specialist 'transducers'? Are they just a frequency generator?