We found this circuit in a Poptronics from 1998. The circuit can be extended to more competitors with another 4011. The power can be made with voltages from 6 to 12 V.
Antenova Grandis antennas can be purchased from Mouser Electronics for frequencies from 868 MHz to...
This circuit uses a switch to select the direction of rotation of a DC motor. It was found in the...
This filter was found in the May 1989 issue of Radio Electronics magazine. The power supply must...