We found this circuit that can reach 50 MHz in the February 1997 Electronics Now magazine. The integrated circuits used are not very common today.
The frequency of the blinking of this circuit is given by the capacitor that can have its value...
This low-current power supply was obtained in Japanese documentation from 1968. The currents are...
This simple audio booster came out in a Popular Electronics in the 90s. It serves as a booster for very...