We found this circuit in the June 1991 issue of Radio Electronics magazine. The integrated circuit is still available. The table gives the component values.
This circuit was found in the February 1990 issue of Radio Electronics magazine. The gain is given...
This 90's project shows how to use an old cassette recorder to practice telegraphy. In position A of the...
We found this 4-channel mixer in the August 1999 issue of Electronics Now magazine. The circuit can...