We found this circuit in a Radio Electronics magazine from December 1969. The circuit uses a low-power MOSFET that is not very common today.
This is the circuit published in the August 1973 issue of Radio Electronics magazine announcing its...
This circuit can be used to add a delay to a logic signal as shown by the input and output...
This tone control was obtained in the Audio Handbook of the National Semiconductor of 1977. The...