This circuit automatically turns off small battery-powered devices after a certain amount of time, saving battery life. We found it in a Popular Electronics from the 90s.
This circuit with 117 V output was found in a 1969 Electronic Design. Drive transistors admit...
This transmitter operates in the 80-meter range, around 3.5 MHz, with an exact frequency value...
The MC33064 can also be used on this circuit of Motorola's 1993 Linear Interface ICs. The circuit...