We found this circuit in a 1977 factory documentation. The operational amplifiers can be 741 and the symmetrical power supply. Capacitors can be changed for operation at other frequencies.
We found this circuit in an 80s Intersil documentation. Modern equivalent operating systems can be...
Although the system is experimental and should not be adopted by the arrival of digital radio, for those...
This circuit with the LM741 operational amplifier can be applied to other operational amplifiers. We...