This logic tester circuit was published in the November 1980 issue of Radio Electronics magazine. The circuit works with both TTL and CMOS logic and has several selectable functions.
This 80's amplifier delivers 6 W of 8 ohm speaker power without using an output transformer....
This simple alarm using only transistors was found in a 1990 publication. It can be powered by D...
We found this CMOS circuit in a publication from the 1980s. What this circuit does is to flash two LEDs...