Skip navigation
Every once in a while I find one of these irresistible buys from the Chinese sources. Such was the case when I came across this little Signal Generator Kit the other day from Banggood.   http://www.banggood.com/XR2206-Function-Signal-Generator-DIY-Kit-Sine-Triangle-Square-Output-1HZ-1MHZ-p-1060825.html   At the time I saw it they were having a sale of 23% off which brought the price down to $7.23. Also keep in mind that this also includes shipping from China to Wisconsin USA. I could ...
  I am studying the similarities and differences in the circuits  of these Switch Mode Power Supplies from a 5 Volt, 6 Volt, and 12 Volts wall warts. I want to find out how they create their output voltages and how they regulate these voltages. One of the similarities that I noticed right away was that each unit had an Opto-coupler between the primary high voltage side and the secondary low voltage side. In my study of the three boards two had a TL431 Precision Programmable Reference ...
Tonight I salvaged a Maxim ICL 7662 Voltage Converter from a circuit board that came out of a piece of dental equipment called a Cavitron. As I glanced over the data sheet on this little IC I was immediately captured by its simplicity of design and application. In my book the closer one can get to simplicity and still get the job done the closer one is to electronic beauty and elegance. This little circuit is beautiful and elegant. I looked the part up on Newark. Here is the listing:   htt ...