We found this circuit in the June 1984 issue of Radio Electronics magazine. The circuit uses an integrated circuit that is not very common today.
The presented circuit uses an operational amplifier that is uncommon nowadays, but it can be...
This circuit is powered by only 3 V and can flash white LEDs from 3.2 to 3.6 V, as it includes a voltage...
This circuit is suggested by National Semiconductor and is based on an LM1578-A integrated circuit...