This circuit that draws 1 out of 8 LEDs was found in an 80's American documentation. The circuit can also work with an astable using the 555 instead of the 4046 which is not a common component today.
This circuit converts a range of input voltages at frequencies from 800 Hz to 3.7 kHz. This is a...
This circuit is from 1967 General Electric documentation. It uses SUS which are not very common...
We found this circuit in the 1982 SGS Linear Integrated Circuits manual. The L78xx is equivalent to 78xx...