This circuit is part of an integrated circuit tester published in an article in Radio Electronics magazine in September 1985. The circuit is powered by a 9 to 12 V source.
Today we have more compact solutions. This is from a Radio Electronics magazine from October 1990....
This filter was found in Texas Instruments documentation from the 1980s. The circuit uses a common...
16 commercial test circuit for tubes and transistors appeared in Radio Electronics magazine in...