The integrated circuit used in this Electronics Now amplifier is not very common today. However, this configuration can be found in commercial equipment of the time.
Found in a 1960 General Electric documentation, this crowbar circuit blows the fuse in case of...
This circuit was originally designed for testing crystals used in color televisions, but it works...
This bridge-biased transistor test circuit measures gain in the range 0 to 300. Circuit is from...