Found in English documentation from the 1990s, this circuit can employ equivalent components. The capacitor must be low leak type. The circuit can operate as a shield.
This TTL instructional circuit appeared in the February 1972 issue of Radio Electronics magazine. 5 V...
Using the HA2400 this circuit has its output voltage digitally programmed from the references...
We found this circuit in a European publication from the 1970s. The transistor is made of...