This circuit was found on an 80's Ham Radio. The transistor admits equivalent. The circuit can generate 20 to 100 MHz signals operating at the fifth harmonic of the crystal.
The circuit shown is from the National Semiconductor's Linear Applications Handbook, 1994. The...
This is the traditional configuration of an AND gate using an operational amplifier. Operational...
This circuit was suggested by Texas Instruments in a manual of operational amplifiers. Other...