Found in a September 1992 Radio Electronics magazine article, this circuit generates a pulse as shown in the graph below the diagram. The timings can be changed by swapping C3 and C7.
We found this simple transistor tester in a French publication in 1981. It uses a common analog...
This circuit was found in the September 1984 issue of Radio Electronics magazine. The circuit is...
We found this circuit in Ferranti's 1974 transistor manual. The components are from the period. Note...