If you are squeamish about electricity or don’t care about electricity you may want to skip this one. But we’re going to talk about some things at are pretty neat, central to the world of electronics and downright cool if you’d like to stick around. Recent blogs have talked about resistors, capacitors and inductors which, …
Just about everyone celebrates a holiday at this time of year. I celebrate Christmas. This year, my wife and I will be spending the first part of the holiday season break with our daughter, her husband and their son in Frisco, TX. Then it’s on to Ellicott City, MD to visit our son, daughter-in-law and …
The blog Ultrasonics – Ultrasonic Generators – Power Control discussed several ways in which the power delivery of ultrasonic generators can be varied. One of the ways is by modulating the amplitude while another is through the use of time proportioning or duty cycle modulation. There are other ways as well, but these are the …
The purpose of fuses is relatively easy to grasp. A fuse interrupts a circuit (turns off) if the current flow (amps) is more than expected or more than the circuit components including wires etc. can safely handle. High current is usually the result of a short circuit, the failure of a device connected to the …
My recent blog, Are Ultrasonic Power Ratings Real?, prompted a response from my friend and colleague William Puskas. Some of you may know Bill as the “Father of Sweep” as he was the first to implement frequency sweeping technology in ultrasonic cleaning equipment decades ago. He is also the author of a significant number of …
Watts of ultrasonic generator output power is one metric often used in the comparison of ultrasonic cleaning systems. In a previous blog, I discussed the potential foibles of using watts of consumption as a measure of comparison as there is no standard for measuring the output of an ultrasonic generator. But there are also other …
More is better in some cases but when it comes to chemistry in industrial cleaning, using too much is costly and could indicate process problems as well. Cost – First, there is the obvious cost of using more chemistry. Most aqueous cleaning chemistries range in price from $15 to $40 per gallon but may exceed …
I sometimes reflect the purpose of John’s Corner. It’s really pretty simple – to help those who are interested in industrial cleaning to understand and make the best use of the existing industrial cleaning technology – but maybe it’s more. As most of you may know (it is no secret), I am a former employee …
Nearly anyone who has been involved in the procurement of an ultrasonic cleaning system has come head to head with watts of ultrasonic power issues. Variations of an order of magnitude or more are common in ultrasonic watts ratings from competitors selling equipment of otherwise similar size and capacity. Despite the discrepancies, I don’t believe anyone …
“Millipore” testing is a popular way of quantifying part cleanliness today. What is generally not known, however, is that it is far from an absolute standard and, in fact, can be very misleading even if “properly” applied. Part of this may be due to the genesis and heritage of Millipore testing. At its inception, Millipore …
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