This first-order high pass filter is applicable to any operation requiring a dual power source. It was found in the March 1997 Electronics Now magazine.
We found this circuit in an English magazine in 1975, but it can be easily assembled, as the...
Found in a 90s Popular Electronics, this circuit uses a 741 to generate frequencies from 0.1 to 30...
This circuit is from an 80's documentation. The circuit makes use of a component of the era, the...