This astable multivibrator was obtained from a Mullard documentation from 1960. The components depend on the used transistor and on the frequency, as shown in the table next to the diagram.
This 1992 circuit uses an integrated circuit not common today. The Sanyo integrated circuit must...
This was one of the National Semiconductor clock modules very popular in the 70s and 80s. In the...
This digital / analog converter shield is suggested by MOTOROLA and is based on an operational amplifier...