This circuit with power MOSFETs was found in a 1980s Siliconix documentation. Equivalent MOSFETs can be used, as well as other transistors. Note the symmetric power supply.
This circuit can be used with TTL or CMOS circuits with slightly higher voltage supply. The...
This circuit was taken from an article in Electronics Now magazine in February 1995. The power...
This circuit was obtained in 1974. It serves to indicate the tuning of stations on a common...