This circuit, obtained from old documentation, doubles the frequency of the pulses applied to the input. The circuit must be powered by a voltage of 5 V.
Found in Harris' 90s documentation, this circuit uses a zener as a stabilizer. The signals...
The circuit presented is based on the National Semiconductor's LM3524, a component not common...
This circuit is from a 1970 General Electric documentation. It can be found with variations on this...