This circuit was found in a 1980s documentation for amateur radio. The circuit is for 9 MHz signals and values in parentheses for FI of 455 kHz. The circuit can be adapted to other frequencies.
Mouser Electronics is now offering a reference design board from ST Microelectronics STEVAL-WESU1...
Two NAND gates are used in the configuration shown here to perform as a monostable triggered by...
This circuit counts from 1 to 10 or 0 to 9 using as indicators common LEDs. The circuit can be...