Found in a 1969 Burr-Brown publication, this circuit makes use of integrated components from that period. With modern equivalents, it can be adapted to be used as a shield.
This circuit was obtained from a General Electric documentation from 1967. The time is given by...
This circuit for small 3 V DC motors uses common components, and its action is controlled by the...
Circuits similar to this can be found in this section. This is from 1967 General Electric...