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 was obtained from a 1976 NASA handbook. The circuit makes use of an operational of the...
This circuit produces a light effect that "ripples" between maximum and minimum points smoothly, with...
This amplifier for instrumentation with differential input is from the factory manual of the...