The lowly resistor is probably the electronic component that is most familiar to most of us. Its one and only purpose is to limit the number of electrons that flow through a circuit. The “poorly conductive material” used in the vast majority of resistors is a mixture of carbon with various other “stuff” to hold …
In a previous blog, we talked about the effect that different waveforms have on RMS vs. Peak voltage. Now we’re going to look at the ramifications of that when it comes to power consumption. For purposes of discussion, we are going to use an old-fashioned light bulb with a filament – something that’s easier for most …
Over the years I have made tens if not hundreds of efforts to clarify the meaning of the term “power” as it applies to the capabilities of ultrasonic cleaning systems. Despite these efforts, a functional means of rating the capability of ultrasonic cleaning systems is still undefined. There are several conventions and declarations. But in …
The blog A Little About RMS introduced the concept RMS (Root Mean Squared) as a way of expressing the equivalent effect of alternating current vs. direct current electricity in the power consumed by a resistive load. Now would be an excellent time to read that one again before going ahead with this one. As part …
Successful ultrasonic cleaning processes utilize a combination of mechanical action provided by the formation and implosion of cavitation bubbles and chemistry that dissolves and/or promotes the wetting and transfer of mechanical energy to dislodge the contaminants to be removed. The interactions and effects of chemistry on the ultrasonic process obviously exist but are not well …
If you work around ultrasonic cleaning tanks you have probably heard a tank “squeal.” If you’ve never heard this, (1) consider yourself lucky and (2) be aware that a “squeal” is not the normal hissing sound associated with an operating ultrasonic tank but, rather, an extremely high amplitude sound at an audible frequency that can …
The physical laws of liquids are a little complex yet a general understanding of them is important to understanding the mechanics of cleaning chemistry in the removal of both soluble and not-so-soluble contaminants from parts. The general concept was discussed in the blog Chemistry – Solvent Characteristics. This blog will take things a bit further. Question …
An earlier blog discussed the mechanics of ultrasonic removal of soluble contaminants. In many cases, however, it is not the soluble contaminants but, rather, particles that are the primary target of ultrasonic cleaning. Particles of concern range from a fraction of a micron to several hundreds of microns in size. Something larger than a BB …
With the availability of ultrasonic cleaning equipment operating at frequencies from 20kHz up to over 250kHz and the capability to use more than one frequency in a single piece of ultrasonic cleaning equipment, users inevitably and rightly question the optimum frequency or frequencies for their cleaning applications. The popular and most touted notion is that …
Note – Before we start, there is a nomenclature conundrum when it comes to the term “ultrasonic transducer.” Through convention, transducer elements, the individual devices that produce ultrasonic vibrations (much like an individual radio speaker), are commonly called “transducers.” A number of transducer elements working in parallel constitute a transducer array but may be called …
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