This circuit was presented in a January 1990 Radio Electronics magazine article as part of a home theater sound effects system. It consists of a 3 kHz high-pass filter.
The integrated circuit used in this 70's application is uncommon nowadays but knowing that it...
The circuit shown in figure 1 consists of a fixed buck regulator using the MIC23021 integrated circuit...
The circuit presented was found in a 1964 documentation. The relay can be 6 or 12 V depending on...