This crystal oscillator generates a 20 MHz signal. Equivalent transistors such as BF494 and 2N2222 can be used. The stabilizing diodes can be 1N4148.
This circuit is from Motorola's Linear Interface ICs from 1993. The circuit uses a booster...
Found in a 90s Popular Electronics, this circuit is intended for amplifying analog video signals....
The figure shows a NOR or Non-OU logic function shield using general purpose diodes and a common...