In the figure we have the way to obtain the Exclusive-OR function with 1 transistor. The circuit is from a 1964 Electronic Design. The transistor can be any general purpose PNP.
This simulated circuit uses a 741 (Operational Amplifier), but other operational amplifiers can be...
Using the 555 and 4020, this timer was found in the July 1994 Radio Electronics magazine. The...
This circuit was found in American documentation from the 1980s. The integrated circuit used is a...