This 300 Hz to 3.4 kHz filter was found in the May 1989 Radio Electronics magazine. The circuit requires a symmetrical power supply.
November 2016 - Mouser Electronics already has the new Microchip MCP1810 Low Dropout (LDO)...
This circuit called “surf man” was published in the August 1992 Radio Electronics magazine. It...
The number of pulses produced by this circuit depends on the switch pressed. The circuit is from...