This TTL sequential flasher circuit was found in the January 1981 issue of Radio Electronics magazine. It is powered by 5 V. The frequency can be adjusted by R1.
This digital indicator circuit was found in the June 1988 issue of Radio Electronics magazine. The circuit...
This powerful amplifier with 2N3055 transistors at the output provides a few tens of watts rms on a...
This simple logic level tester was found in Radio Electronics from the 90s. The inverters are of...