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Parameters of the Test:   This is a rough bench test to determine the pros and cons of using the Recom R78 Series switching converters in place of the standard 78## linear Regulators in simple circuits.   Input voltage used for this test was 15 volts regulated.   All load resistors are assumed accurate at marked resistances   All meters are assumed accurate within reasonable expectations for the scope of this test.   All current measurements are listed in milliamps.  ...
One of the things that I enjoy doing is taking an old unused circuit board and reverse engineering it to see how it works. Today I have a time display board from a Dental X-Ray machine that my son gave me. The typical old dental x-ray machine dispenses its radiation in short bursts of 1/120 of a second. This is caused by feeding AC voltage to the primary transformer of the tube head. The X-Ray tube itself is actually a high voltage vacuum tube diode with a plate of tungsten as a target on the ca ...
jw0752

The Art of Electronics

Posted by jw0752 Top Member Apr 15, 2015
Several months ago D_Hersey recommended a book to me called "The Art of Electronics" by Paul Horowitz and Winfield Hill. Since Don's advise has proven accurate and valuable to me in the past I went and looked up the book. I learned that the Third Edition of the book was due for release in the Spring so I placed a preorder and put further thought about it in the back of my mind.       Today, when I got home, I found it delivered to my front door. I was very eager to check it out ...