This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies to virtually any junction FET.
For counting to values higher than 16, many 4520 can be cascaded as shown in Figure . The EN...
Found in the 2005 Linear Technology Application Manual, this circuit controls the torque of a...
This circuit was found in a 1977 Radio Shack documentation. The circuit is tuned to 1.4 kHz, but...