Suggested by Mullard in a1969 documentation, this circuit generates the erasure signal for tape recorders of the time. Transistors can be modern equivalents like BD136 and BD136.
This monostable circuit, from a 1977 Radio Shack documentation, uses a 7400. The time is given by the...
Integrated LM108 and LM101A are used in this fast adder with low input current, figure. The...
This ultra-simple tester and component gauge lets you perform continuity testing and even evaluate...