We found this circuit in a 1973 publication. The circuit lets frequencies below 480 kHz pass through with an output impedance of 1k. The circuit can be implemented with current operational.
This conventional 4 channel circuit with the 4017 and 555 was found in the November 1991 Radio...
This bandpass or bandpass filter is tuned to a frequency of 800 Hz, but the components can be...
January 2017 - Texas Instruments is making available through Mouser Electronics the new Buck...