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 uses an unusual component today which is the integrated circuit. We found this...
This circuit was found in an old American documentation. The operational used is of the...
In figure 1 we have an application for NLAS5113, a new device from On Semiconductor...