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Easy Online Circuit Analysis
I was writing an electronics article today and started to do some circuit analysis by hand. It was a pretty simple circuit so I knew I could crank out the circuit analysis on paper but I started to...
View ArticleBdale KB0G Makes Stuff!
Last week, I had lunch with an old friend, Bdale Garbee (KB0G). Bdale and I had both worked at HP for a number of years and we have been involved in some common ham radio clubs and activities. I...
View ArticleBloody Proprietary Connectors
I came across this video rant by David L. Jones on the EEVblog concerning proprietary cables on consumer devices. I agree with him completely. Warning: some language not suitable for kids....
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Meet the Arc Fault Circuit Interrupter
You are probably familiar with the Ground Fault Circuit Interrupter (GFCI), also called Ground Fault Interrupter (GFI), Residual-Current Device (RCD) and a few other names. While doing some electrical...
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ISO-TIP 7700 Soldering Iron Review
Model 7700 soldering iron I recently had the opportunity to try out a new ISO-TIP 7700 soldering iron. This is a rechargeable soldering iron without a lot of extra features but it is plenty capable for...
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Radio Frequency Interference From 12V-to-USB Adapters
Many small electronic devices have switching regulators in them that can generate a bunch of Radio Frequency Interference (RFI). This is not my first encounter with RFI-spewing devices. See this...
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HT and Light Bulb Load
The light-bulb dummy load has been used with HF transceivers from way back in the old days (and sometimes more recently). These “dummy loads” tended to radiate a bit and can actually be used as a...
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Radio Shack Brands
Recently, Retail Ecommerce Ventures (REV) announced its purchase of certain iconic RadioShack brands and related assets. Many radio amateurs and electronics hobbyists would like to see something...
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Can You Hear a 1-dB Change?
Decibels are commonly used in electronic communications to describe and compare signal levels. I’ve often heard that one dB is considered to be the smallest change that a typical person can detect by...
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