This circuit is from a Motorola documentation from 1968. The integrated one is an operational of the time still in metallic casing. Modern equivalents can be used.
This circuit combines a low-offset and a high-speed operational amplifier. The circuit was found in...
We found this circuit in the 1983 Radio Electronics Special projects magazine. The components are...
This power oscillator uses an LM380 amplifier. We found it in old English documentation. The C3...