Found in a 1980s American documentation, this crystal-controlled oscillator generates 100 MHz signals. The crystal used is 20 MHz. Modern equivalent transistors can be used.
This circuit was suggested by Motorola in a 1969 publication. It makes use of components of the...
We found this circuit in the 1994 Linear Applications Handbook from National Semiconductor. The...
This adding amplifier with the operational LM324 is from the SGS integrated circuits manual of...