This is another sampling and holding circuit found in a factory manual from the 1980s. The circuit can be implemented with more modern components. The FET is not a common component today.
This circuit was found in a Ferranti documentation from 1969. The transistors are common types of...
This interesting passive circuit from an 80's publication measures the distortion of an audio...
This preamplifier circuit with a CK722 transistor appeared in Radio Electronics magazine in...