This circuit uses a capacitor that depends on the frequency of the crystal. We found it in a 1967 documentation. The maximum frequency is around 100 kHz.
This circuit is from the 1990 Motorola Data Databook. The circuit can be implemented with...
The circuit presented emulates an OR gate with the LM3900, operational transconductance amplifier....
This circuit is interleaved with the source of a portable AM or FM radio previously tuned to a...