We found this CMOS circuit based on the PLL4046 in the December 1989 issue of Radio Electronics magazine. The circuit is powered by a 9 V voltage.
We found this automotive alarm circuit in a 90's Popular Electronics circuit. The circuit emits a...
The SCR sector of this circuit can be powered by high voltage AC and instead of the LEDs we can...
The 1 kHz Wien bridge oscillator presented was found in the 1993 Linear Technology Applications. The...