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.
This circuit is from an old documentation of Radio Shack from the 70s. The transistor should...
This 1980s circuit was found in Motorola documentation. The circuit uses period components that admit of...
The power supply shown in the figure provides output voltages in the range of 1.2 to 25 V with...