With the configuration shown, the output capacity of the LM12 can be doubled, which is 4 A. The circuit is from the Linear Applications Handbook of the National Semiconductor of 1994.
This antenna for the frequencies 146 or 440 MHz was found in a magazine 73 for Amateur Radio of...
This circuit produces 1 kHz square signals using the CMOS IC 4070. The frequency is given by the...
Found in a 90s PE Hobbyst Handbook, this circuit mimics the sound of a space gun. The components...